Author: vemcoblogs

Air Compressor Noise Reduction: Strategies for Quieter Operation in Residential and Industrial Settings

by vemcoblogs -
ELGi compressor dealer in Mumbai

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Air Compressor Noise Reduction: Strategies for Quieter Operation in Residential and Industrial Settings

While air compressors are a great source of power across industries and business facilities, these could often disturb the tranquility of a residential house. In these settings, it is necessary that the right strategies for noise-free operation are put in place. VEMC is the leading ELGi compressor dealer in Mumbai and in this blog, we tell you all about reducing the noise produced by your air compressor.

Understanding the sources of noise in air compressors

Before we take action against the noise, it is necessary to understand where it is coming from. The most common sources of noise in an air compressor are:

  1. Intake: The intake of air by a compressor can produce noise due to shifts in pressure or turbulent torrents entering your air compressor.
  2. Discharge: Just as air entering your compressor forcefully produces noise, the compressed air pushed out through the discharge valve can also produce a significant amount of noise.
  3. Motor: Over a period of time, due to friction, wear and tear, or lack of lubrication, the motor of your air compressor can also start making noise.
  4. Vibration: An air compressor is a system of moving parts which can rub against each other during operations, creating a lot of vibration and noise. It may also be caused by simpler reasons like unsteady floor where the compressor rests.

Strategies for reducing air compressor noise

  1. Enclosures: If your compressor is producing noise beyond your tolerance levels, you can simply cut it off from the rest of your home or factory floor by building a physical enclosure around it. Soundproofing the walls of the enclosure can also go a long way in absorbing the noise.
  2. Silencers: Air compressor silencers or mufflers are effective devices available in the market which greatly help reduce the noise produced by an air compressor.
  3. Sound-absorbing material: Unlike steel or concrete, sound-absorbing material absorb rather than reflect the noise produced by a compressor. These include acoustic panels, foam or wood. 
  4. Proper installation location: Installing the compressor in a separate dedicated room can help prevent the noise from affecting the rest of the house or factory. Place the compressor away from walls and corners to prevent the noise from rebounding and amplifying.

Regulations and standards for noise levels

Noise pollution is a massive concern when you’re investing in an air compressor for your home or factory. When buying a compressor in India, you must be aware of the regulations and standards set as per the Noise Pollution (Regulation & Control) Rules, 2000. Here are the noise levels acceptable in various settings as per the rules:

Area codeCategory of Area / ZoneLimits in dB(A) Leq
Day TimeNight Time
(A)Industrial area7570
(B)Commercial area6555
(C)Residential area5545
(D)Silence Zone5040

Advanced Monitoring and Diagnostics for Solar Panel Performance Analysis

by vemcoblogs -

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Advanced Monitoring and Diagnostics for Solar Panel Performance Analysis

Solar energy is gaining steady prominence as one of the most preferred sources of renewable energy across the world. However, to get the maximum out of your investment in solar power systems, it is necessary to keep track of all its critical parameters. Advanced monitoring and diagnostics enable you to do exactly that, for zeroing in on issues and taking timely corrective action. VEMC is a leading solar EPC company based in Mumbai, and in this blog, we tell you all you need to know about performance analysis of your solar power system.

Benefits of advanced monitoring systems

  1. Identify performance issues early: Advanced monitoring and diagnostics technology acts as an early warning system for any performance-related issues which could lead to lower productivity and efficiency.
  2. Optimise system operation: The data collected by advanced mentoring and diagnostics system enables users to zero in on any system issues and take corrective course to optimise system operation.
  3. Maximise energy production: With advanced monitoring systems, users receive a stream of continuous and uninterrupted data which helps keep track of the energy produced by the panels. As soon as deviation is noticed in the production, it could point towards issues such as accumulation of dust, shading of the panels or bird droppings which act as barriers to the sunlight and reduce the energy produced. With timely action, energy production can be maximised. 

Types of data collected by monitoring systems

Monitoring systems keep a track of a wide range of relevant parameters which are critical indicators of your solar power systems’ performance, efficiency and productivity.

  1. Power output: This is one of the most significant parameters that users must track throughout the lifespan of their solar power project. A steady power output at peak levels indicates a healthy solar power system while deviations may signify its decline.
  2. Voltage: This is another important parameter that must be tracked continuously. It also indicates the productivity of your system.
  3. Current: A monitoring system typically has a current sensor that keeps track of the current generated by your solar power system.
  4. Temperature: Solar power systems are known to operate at an optimum temperature. Extremes of temperatures can lead to a reduction in the productivity of your solar power system.
  5. Irradiance: Greater the irradiance received at the surface of the panels, more will be the electricity generation. Suboptimal irradiance may indicate shade due to newly-grown foliage, dust, debris or simply wrong positioning of the panels.

Using data analytics to track performance

Monitoring and diagnostics is all about collecting and analysing data. This is especially useful for identifying performance trends, detecting anomalies and diagnosing potential problems. Analysing data has an important role to play in preventative maintenance, avoiding downtime, and prolonging the lifespan of your solar power system.

For more on solar power system monitoring and diagnostics, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We are the leading solar EPC company based in Mumbai.

Solar Panel Cleaning and Maintenance: Methods and Scheduling

by vemcoblogs -

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Solar Panel Cleaning and Maintenance: Methods and Scheduling

If you own a solar power system, you would realise that it is all about exposing the maximum surface of the panels to the sun for maximum possible time. What can really affect its performance and efficiency is barriers like dust and debris. This makes it extremely important to clean and maintain the panels regularly. We at VEMC are the leading solar panel consultants and installers based in Mumbai, and in this blog we talk about cleaning and maintaining your solar panels.

Factors affecting cleaning frequency

While it is necessary to clean your solar panels regularly, it cannot be feasible in terms of cost and labour to do so too frequently. Here are some decisive factors that determine how frequently you must clean your panels:

  1. Environmental conditions: The larger environmental context you are located in is the foremost factor to determine your cleaning frequency. For instance, you may need to clean the panels more often if you’re located in the middle of a busy urban centre or near a factory, as compared to a bucolic rural setting.
  • Dust accumulation: How much dust accumulates on your panels in a given setting will also determine the cleaning frequency. Dust could be raised by heavy traffic or industrial processes like mining or stone crushing.
  • Bird droppings: Another widely noticed barrier to sunlight shining on your panels is bird droppings. If your facility has a lot of trees nearby, it is quite likely that birds would fly over your panels and pound them with their droppings. This will make regular cleaning necessary.

Safe and effective cleaning methods

Cleaning your solar panels is quite simple and straightforward but for the sake of longevity, you must keep a few guidelines in mind.

  1. Use water and mild detergent: Use de-ionised, rain or tap water to clean your panels. Make sure the water is clean to prevent any mud or contaminants from remaining behind on the panels. Do not use any abrasive, acidic or alkalic cleaners on your panels. A regular mild detergent should do.
  2. Specialised cleaning brushes: These days, a lot of sellers are offering brushes made specifically for solar panels. These are often motorised and can clean in both linear and circular motion. Most importantly, they clean without leaving any marks or scratches on the surface.
  • Robotic cleaners: These are automated systems used to clean solar panel surfaces. These operate by using a combination of mechanical and smart technologies to clean efficiently. These are especially useful when your solar panels are out of reach or located too precariously for manual cleaning.

Recommended cleaning schedules

Solar panels must typically be cleaned twice a year. However, regular inspections are necessary to take more precise decisions and get maximum efficiency. Besides, the above-mentioned factors will also play a key role in scheduling your cleaning.

To get the most out of your solar power systems, cleaning and maintaining them is essential. We at VEMC offer comprehensive solar EPC contracts to our clients which cover everything your solar power system needs post purchase. For more on this, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in.

Understanding Priming Requirements for Centrifugal Pumps

by vemcoblogs -
Kirloskar pump dealer

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Understanding Priming Requirements for Centrifugal Pumps

If you own a centrifugal pump, you must be aware of the process of priming it. Priming simply means filling up the pump casing with the liquid that is to be pumped. This removes any air from the casing and creates a seal between the casing and the impeller. Depending on the type of the pump you’re using, priming can be manual or automatic. VEMC is the leading Kirloskar pump dealer based in Mumbai and in this blog, we tell you all you need to know about priming your centrifugal pump.

Understanding priming

Centrifugal pumps have a priming chamber which is filled with a liquid to expel air and create a vacuum. This helps prevent cavitation of the pump while improving its efficiency. As any Kirloskar pump distributor may tell you, a well-primed pump lasts longer, consumes lesser energy and offers optimum performance.

Different priming methods

  1. Gravity-fed priming: In this type of priming, the casing is filled using the force of gravity, that is, it simply flows downward into the priming chamber without any consumption of external energy.
  2. Vacuum priming: In this type, the vacuum priming system pulls water into the pump allowing it to start. This happens as a result of creation of a vacuum from the top of the impeller down to the level of the water source.
  • Flooding: In this type of priming, the pump is completely flooded with the liquid. However, since these types of pumps cannot handle air, gases or vapours even for a short period of time, there’s always a risk of the liquid being interrupted or bearings getting damaged.

Selecting the appropriate priming method

The right priming method depends upon a number of factors such as:

  1. Pump type: When it comes to priming a pump, there is no one-size-fits-all. Different types of pumps require different priming methods and your Kirloskar pump dealer can provide the right information on this.
  2. Installation: Some pump installation systems may make certain priming methods difficult or impossible. For instance, gravity-fed priming may not be possible for all types of installations.
  3. Operating conditions: Before selecting your priming method, it is important to consider the operating conditions of your pump. These include system designs, constraints, type of liquid to be pumped etc.

Troubleshooting common priming issues

Some of the most common priming issues that customers approach Kirloskar pump distributors with, are:

  1. Air leaks: Air leaks can cause your pump to lose the prime or not prime at all. To fix this, check the pump lid and o-ring for any damage. Even debris or improperly sealed lids or o-rings can cause air leaks.
  2. Insufficient liquid levels: Low water levels can cause a pump to lose the prime. Make sure that the water level is above the minimum level required for operation.
  • Pump not self-priming: This could be caused due to a suction leak. Alternatively, the suction line is too long or its diameter is too wide. To prevent this, use a cling wrap around each joint.

Priming is one of the most crucial aspects of pumping. For more information on priming, feel free to call VEMC at 022 43436655 or email us at marketing@vemc.co.in.

Understanding Air Compressor Duty Cycle

by vemcoblogs -

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Understanding Air Compressor Duty Cycle

If you plan to procure a new air compressor, you will inevitably come across a specification called Duty Cycle in percentage terms. While a 100% duty cycle may be emphatically advertised by a seller and even seem alluring, you will require a more nuanced and in-depth understanding of the concept. VEMC is one of the leading ELGi air compressor dealers in Mumbai and in this blog, we tell you all you need to know about air compressor duty cycles.

Defining a Duty Cycle

The duty cycle of an air compressor simply refers to the time taken to fill its air tank. Every time the tank of an air compressor is full, the pump stops and then starts again. This is known as the run-time versus rest time of a compressor. However, in case a compressor doesn’t have a tank, then its duty cycle will always be 100%.

A compressor with 25% duty cycle means the compressor will have 45 minutes of downtime every hour and be active for only 15 minutes. Likewise, for a compressor with 50% duty cycle will have a downtime for 30 minutes and be active for 30 minutes.

Factors influencing duty cycle selection

  • Air demand: If your air demand is high, you will require an air compressor with longer duty cycle.
  • System size: A larger system will require a longer duty cycle and vice versa.
  • Pressure requirements: Duty cycle also depends upon the pressure required for your task. This means more the pressure required, more should be the duty cycle.

Selecting the right compressor based on duty cycle

Air compressor with intermittent duty cycles

Applications like filling a tyre, powering mechanical tools like wrenches and nailers, or DIY home projects can make use of compressors with intermittent duty cycles.

Air compressor with continuous duty cycles

Applications like powering tools in electronics, furniture and automobile industries, and operating conveyor belt systems use compressors with continuous duty cycles.

A duty cycle can be a critical determining factor when it comes to selecting the right compressor. However, you must be mindful of a few considerations.

  • Avoiding overloading: While it may be quite tempting to select a compressor with highest possible duty cycle, over-cycling can be problematic. Over-cycling could seriously impact the health of your system and reduce its lifespan significantly due to wear and tear. It also reduces the efficiency of the system as quick cycling consumes more energy.
  • Ensuring sufficient capacity for peak demand: When the demand of compressed air is high, you must have adequate capacity to match it. You can use a larger storage tank or try a wide pressure band to ensure this.

Duty cycles are clearly a significant factor to determine the right air compressor type for the right task. For more information on duty cycles or any other air compressor parameter, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We are the top ELGi reciprocating compressor and screw compressor dealers based in Mumbai.

Pump Performance Testing of Centrifugal Pumps

by vemcoblogs -

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Pump Performance Testing of Centrifugal Pumps

Centrifugal pumps are performance tested to verify their design and ensure they match the standards of mechanical integrity. Under controlled conditions, a centrifugal pump is tested to prove its compliance with client and industry standards. VEMC is the leading Kirloskar pump authorised dealer based in Mumbai, and in this blog we tell you all you need to know about pump performance testing.

Key parameters measured during testing

The most important parameters checked during a performance test are:

  1. Flow rate: This simply represents the volume of the liquid that the pump is able to displace.
  2. Head: This is the pressure which the pump is able to generate and will naturally also impact the flow rate.
  3. Power consumption: Both flow rate and head are functions of the power consumption. While doing performance testing of centrifugal pumps, power consumption must be carefully tracked to keep electric bills at minimum levels.
  4. Efficiency: If the pump is operating with limited consumption of electricity, it indicates optimum efficiency levels.

Purpose and benefits of performance testing

  1. Testing mechanical integrity: Performance testing provides insights with respect to the mechanical integrity of the pump. This means that the tested pump has no mechanical problems, say due to high bearing temperatures, vibration levels or leakage of seals and gaskets.
  2. Checking the performance: The pump displays its ability to offer consistent performance. The performance curve is plotted between capacity (X) and head (Y) and enough data must be collected to complete the curve. Vibration is also observed at each data point to ensure it stays in control in real life conditions.
  • NPSH test: This determines the suction performance of a pump. As part of an NPSH test, pressure is reduced until the pump enters the onset of cavitation. Data is collected till the total head begins to decline while capacity is maintained at a constant rate.
  • Efficiency: As energy prices soar, it is necessary to keep energy consumption at a minimum level. This will improve operational efficiency and also to reduce the carbon footprint of the business.

Different test standards and procedures

Certain industry standards are to be followed when testing a centrifugal pump. These are:

  • Hydraulic Institute (HI) “Centrifugal Pump Tests,” American National Standards Institute (ANSI)/HI 1.6-2000
  • American Petroleum Institute (API) Standard 610, 12th edition
  • American Society of Mechanical Engineers (ASME) Power Test Codes (PTC), ASME PTC 8.2-1990
  • HI “Vertical Pump Tests,” ANSI/HI 2.6-1994

Different standards have different testing procedures. For instance, API pumps measure 6 points while undertaking performance testing:

  1. Shut off point
  2. Minimum continuous stable flow
  3. An intermediate flow (flow between the minimum continuous stable flow to BEP/ rated)
  4. Between 95% and 99% of rated
  5. A point between rated and 105% of rated flow, BEP (if rated flow  is not within 5% of BEP),
  6. A point at the end of the allowable operatio

Performance testing can clearly help unearth a range of pump issues such as efficiency deviations, cavitation, excessive vibration etc. To know more about pump performance testing, call us on 022 43436655 or email us at marketing@vemc.co.in. We are the leading Kirloskar dealer in Mumbai.

Compressed Air System Piping: Design Considerations for Pressure Drop Reduction

by vemcoblogs -

Compressed air is a major source of power in an industrial setting. But to get the most out of your air compressor system, you need to make sure all the ancillaries are well-designed and installed. Piping is an essential support system which plays a huge role in how well your compressed air system performs overall. We at VEMC are a top-notch ELGi dealer in Mumbai and in this blog, we tell you all you need to know about the design consideration of your piping to reduce the pressure drop in your air compressor system.

Factors contributing to pressure drop in piping

  1. Pipe diameter: This is one of the most obvious factors that impacts the pressure of the compressed air in the piping. Pipe diameter impacts the velocity of the air moving through the pipes. To put it simply, larger the pipe diameter, lesser will be the pressure for a given volume of air.
  2. Length of the pipe: Longer the pipe, greater will be the friction loss and hence lesser will be the pressure exerted by the compressed air. Pressure drop is thus directly proportional to the pipe length.
  3. Material: The friction that the moving air particles experience against the walls of the piping also contributes significantly to the drop in pressure. Thus, the material of the piping walls will also determine the extent of pressure drop.
  4. Fittings: How the piping is designed and fitted is an important factor that affects the drop in pressure. A highly complicated design with too many bends will reduce greater amount of air pressure as compared to a more straightforward one.

Strategies to minimise pressure drop

Now that we have understood what factors cause drop in pressure, let’s take a look at how to avoid or at least minimise it.

  1. Appropriate pipe sizing: Make sure the pipes are of the right size in terms of both length and diameter. Both long as well as broad pipes can cause unnecessary drop in pressure.
  2. Avoid unnecessary bends and restrictions: As much as possible, the piping design should be simple and straightforward. Too many bends and restrictions can also cause a drop in pressure due to greater friction.
  3. Use smooth-surfaced pipes: As mentioned above, friction of air particles with the internal surface of the pipes can also reduce the pressure of the compressed air. It is therefore advisable to use smooth-surfaced material for your piping.

It is quite clear that not only does the power and capacity of your air compressor matter but also the overall system and piping design. With the right piping design and installation, you can maintain optimum performance by reducing drop in pressure.

For more expert advice on your air compressor systems, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We at VEMC are the leading ELGi compressor dealer in Mumbai with a wide array of air compressor options available to meet your needs. 

The Impact of Liquid Viscosity on Centrifugal Pump Performance

by vemcoblogs -

Pumps do not operate with the same efficiency and effectiveness with all liquids. One of the most important characteristics of the liquids that impact pump performance is their viscosity. VEMC is a leading Kirloskar pump authorised dealer based in Mumbai and in this blog, we tell you about the impact of liquid viscosity on centrifugal pump performance.

Definition and units of liquid viscosity

Let’s first try to understand what viscosity really means. In simple terms, viscosity can be thought of as the thickness of a liquid. However more technically, it refers to the resistance to flow at a given temperature. At the molecular level, it represents the interaction (more specifically friction) between molecules in a particular liquid. Higher viscosity means a liquid is thicker, that is, it offers more resistance to flow and hence requires more energy to be displaced from one point to another.

Unit of viscosity: Viscosity is measured in Newton-Second per Square Metre.

How viscosity affects pump efficiency and flow rate

As stated above, more viscous liquids are harder to move due to the greater resistance to flow they offer. As such, higher viscosity has a negative effect on the performance of a pump in terms of flow rate as well as head. This means if you are looking to displace highly viscous liquids such as oil or honey, you will need a really powerful pump.

Selecting the appropriate pump type and size for liquids with different viscosities

Let’s now take a look at which pumps are suited for which levels of viscosity.

  • For low viscosity fluids such as water, centrifugal pumps are the best. However, even with a slight increase in the viscosity of the liquid, centrifugal pumps’ performance may be affected.
  • For highly viscous liquids such as oil or honey, positive displacement pumps are most suitable. These can be run at lower speeds and varying flow rates to make up for the thickness of the liquids. 
  • Finally, peristaltic pumps can handle both high as well as low viscosity liquids with relative ease. These are suited for repeatable dosing applications and can run dry without any risk of pump failure.

Other considerations for highly viscous liquids

Apart from choosing the right pump types for the right levels of viscosity, you must also be mindful of the ancillary setup such as suction and piping. For highly viscous liquids, make sure there is no restriction on the suction end. Also, for such liquids, the pipework size must be larger to compensate for the friction loss or extra drag.

If you’re still not sure which pump is best suited for your liquid type, we are here to help you out. Feel free to speak to our experts by calling on 022 43436655 or emailing us at marketing@vemc.co.in. VEMC is the leading Kirloskar pump dealer based in Mumbai with over 72 years of rich industry experience in supplying and installing pumps, valves, fire panels and other high-standard electromechanical equipment.

Selecting the Right Dryer to Remove Moisture from Compressed Air

by vemcoblogs -

Moisture in compressed air could be problematic especially if you’re using it for food processing, spray painting or electronics. Moist air can cause growth of microbes, rusting of pneumatic tools or damage to circuits. To remove this moisture, it is necessary to use an air dryer in your compressor. But you must know which air dryer suits your needs best. We at VEMC are the top ELGi air compressor dealers in Mumbai and in this blog, we tell you how to select the right air dryer for your compressor.

Types of compressed air dryers

Let us first look at the top 3 compressed air dryers and their working mechanism.

  1. Refrigerated dryers: These are the most commonly used air dryers and these operate by using an air-to-air heat exchanger and air-to-refrigerant heat exchanger. These remove moisture from the air through condensation.
  1. Desiccant dryers: Desiccant dryers use adsorbent material such as silica, activated charcoal, calcium chloride, calcium sulphate or zeolites to remove moisture from the compressed air.
  2. Membrane dryers: These dryers use a membrane to remove moisture from the air. The membrane is usually made of polyamides or polyurethane. The compressed air is passed through the membrane which has tiny pores that allow air to pass through but retain the moisture.

Factors to consider when choosing a dryer

A number of factors go into consideration when deciding upon which air dryer to choose for your operations. These are:

  1. Moisture removal capacity: First of all, find out how capable the air dryer is to remove the moisture from the compressed air. This is after all your main concern and should get the highest level of importance.
  1. Pressure dew point: This represents the temperature to which compressed air can be cooled without condensation. A good air dryer brings down the pressure dew point so that the moisture is turned into liquid and can then be removed with ease.
  2. Energy consumption: What amount of energy is your air dryer consuming is another factor you need to watch out for. This is especially true as electricity prices are rising every passing year, and most businesses aim to optimise their energy resources to be reduce their carbon footprint.

Impact of compressed air quality on downstream equipment and processes

When operating in an industrial setting, it is not just necessary to have compressed air, but the quality of the air also matters significantly. Compressed air loaded with moisture can cause rusting and early wear and tear of equipment including the compressor itself. Likewise, if you’re operating in sensitive industries like pharmaceuticals or food processing, moist air can hasten the growth of microbes in the product leading to spoilage.

For more on which air dryer will meet your needs the best, feel free to get in touch with our experts by calling on 022 43436655 or emailing us at marketing@vemc.co.in. We at VEMC are the leading dealers of ELGi reciprocating compressors and oil lubricated screw compressors.

How to Read a Water Pump Curve

by vemcoblogs -

In its most basic form, a pump curve displays two things: Flow and Pressure. However, depending upon its sophistication, it can also show information like efficiency, power etc. Reading a pump curve correctly helps you discern whether the pump is suitable for your application. VEMC is one of the leading water pump dealers in Mumbai, and in this blog, we teach you to read a water pump curve.

How to read the pump curve

As mentioned above, a water pump curve shows the relationship between flow rate and pressure. Usually, the flow rate is shown on the horizontal axis and pressure on the vertical axis. So the curve displays the flow rate at a certain pressure or conversely the pressure of water at a certain flow rate. It is presumed that the water pump curve has been plotted for water.

Let’s take the adjacent graph for illustration. As you can see, the pump produces no flow at 41 meters of head and a maximum flow of 2100 litres per minute at 23 meters. This is because a pump operates under a number of influences such as speed and frequency of the motor which affect its flow and pressure. The speed of the motor for instance, directly impacts the flow rate and pressure.

Selecting the right pump based on requirements and operating point

A system curve is another graph to watch out for. It plots points between resistance of a system (head to be overcome by the pump) and flow rates. The system curve depends on factors such as height, diameter or length of piping, fitting type and number etc. The suitability of a pump is determined by how well the pump and the system curves match. The pump operating point is where the system curve crosses the pump curve on superimposition. 

Limitations of pump curves

While pump curves are extremely useful tools to understand the relationship between your pumps’ flow rate and pressure, and also to determine the right pump for the right task, they do have certain shortcomings as well.

A pump curve does not explain the relationship between operating point and equipment reliability which experts consider highly important. This relationship makes a huge difference in terms of pump longevity, and cost of repairs and replacement. 

Likewise, the Best Efficiency Point (BEP) indicates the point or area with highest efficiency for a given impeller diameter. In an ideal world, pumps would never operate outside of a BEP. However, in reality, factors like system upsets and fluctuating demand can make the BEP to shift. This can cause cavitation, rise of temperature, or wear and tear of seals and bearings.

For more on how to use tools like the water pump curve to make the right pumping decisions, feel free to speak to our experts by calling us at 022 43436655 or emailing us at marketing@vemc.co.in. We are the top Kirloskar pump distributor based in Mumbai with decades of rich experience and unparalleled expertise in pumping. 

The Role of Solar Charge Controllers in Protecting Batteries and Optimizing System Performance

by vemcoblogs -

If you are a solar PV system owner, you must be aware of the critical accessories that are necessary for the health of your system. One such equipment is a solar charge controller which regulates the charging and discharging of your batteries and also controls the power output. VEMC is the leading solar energy company based in Mumbai and in this blog, we tell you about the role that a solar charge controller plays in protecting and enhancing the performance of your solar power system.

Functions of solar charge controllers

  • Overcharge protection: 

For starters, a solar charge controller protects your batteries from overcharging. As soon as the voltage exceeds the protection voltage, the battery is automatically disconnected. 

  • Deep discharge prevention: 

Converse to overcharge protection, solar charge controllers also prevent deep discharge of your batteries. When the voltage of the battery falls below the over-protection voltage, the solar charge controller turns off the battery output to prevent deep discharge, only to restore the power supply when the battery is recharged.

  • Battery health monitoring: 

A solar charge controller is connected to the same battery terminals and can therefore keep track of the voltage to determine the state of the charge. By constantly monitoring the voltage of the battery, a solar charge controller keeps up-to-date about its health

Types of charge controllers and their suitability

Lets now talk about the two main types of solar charge controllers and the scenarios they best fit into.

  • Pulse Width Modulation (PWM) controllers: 

These are traditional solar charge controllers which operate by connecting directly from the solar array to the battery bank. These controllers are smaller and are suitable only to operate at battery voltage. These must be used with arrays matched with battery voltage.

  • Maximum Power Point Tracking (MPPT) controllers: 

These, on the other hand, are more advanced as compared to the PWM controllers and operate at maximum power voltage. As a result, the output produced is maximized which is great in cold conditions when the voltage of the solar array is much higher than the battery voltage.

Using proper settings for maximum energy harvest and battery lifespan

The right charge controller settings can bring rich dividends when it comes to power output as well as the lifespan of your battery. Different types of batteries work well with different settings. Some of the most important settings that need proper configuration for best results are:

  1. Battery floating charging voltage
  2. Battery over-discharging protection voltage
  3. Battery over-charging protection voltage
  4. Charge controller capacity
  5. Maximum charging current
  6. System voltage

If you’re a solar panel owner, you must make sure you have a quality solar charge controller in place to have maximum harvest and also prolong the working life of your batteries. For more information

on solar charge controllers, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We are the leading solar power company based in Mumbai.

Dewatering in Construction

by vemcoblogs -
Kirloskar water pump dealer (1)

Excavation is a huge part of construction and water logging on the sites is a very common problem. To ensure smooth progress of the project, it is necessary that you manage the groundwater well. However, a number of different dewatering techniques are used, each suitable for a certain set of conditions and project specifications. VEMC is the leading Kirloskar water pump dealer in Mumbai, and in this blog, we tell you all you need to know about dewatering in construction.

Types of dewatering methods

  1. Subsurface drainage: 

This is a drainage method which helps remove water that has percolated into the subgrade. It is used in areas that have a very high water table or receive incredibly heavy rainfall. Subsurface drainage typically has a permeable base to remove water rapidly, a pipe collector system to convey the liquid away, and a filter layer to prevent the clogging of drainage.

  1. Sump pumps: 

This is one of the simplest and most cost-effective methods of dewatering. It involves digging pits in the drainage area to collect water which is then removed by using pumps.

  1. Wellpoint systems: 

A number of small wellpoints are installed around a site. These are connected with a central header pipe which has a vacuum function. Wellpoint systems are great for lowering the groundwater levels and facilitating construction work by creating a dry area.

Selection criteria for dewatering methods based on project specifics

The working conditions and project demands can vary from one construction site to another. The choice for dewatering methods must be made accordingly. For instance:

  • In conditions where there’s heavy rainfall, high water table or deep permeable soils, subsurface drainage can be the best option. It is also useful to drain heavy and poorly drained soils, or those that might have an impending layer at some depth, say clay.
  • In case of construction sites with shallow excavations and low-permeability, sump pumping can be the most feasible and cost effective method to remove water. However, it carries with it the risks of sudden collapse or erosion. 
  • In case of shallow excavations or fine-grained soils with low permeability, wellpoint systems can be the method of choice. It is quite cost effective and also easy to install. 

Environmental and safety concerns

Dewatering involves significant environmental and safety risks. For example, uncontrolled dewatering can deplete the groundwater of an area. Likewise, it can also cause increased sediment levels in waterways. In cases when seasonal conditions add more surface water to work sites, unmonitored dewatering can have an accidental impact on the environment.

Dewatering could be a dicey activity. To make sure environmental and safety risks are averted, builders must follow proper guidelines. For more on which dewatering method to choose for your construction site, and how to ensure environmental and personal safety, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. VEMC is one of the top-notch Kirloskar pump dealers in Mumbai with a rich industry experience of over 70 years. 

Understanding Air Compressor Discharge Pressure

by vemcoblogs -

If you’re an air compressor owner, you must be acquainted with some of the basics of your equipment. Discharge pressure is one of the most relevant notions that significantly impacts how your air compressor performs. VEMC is one of the leading air compressor dealers in Mumbai, and in this blog, we take you through all you need to know about discharge pressure.

Definition and importance of discharge pressure

Discharge pressure simply refers to the air pressure at the output end, that is, the discharge flange of your compressor. Maintaining optimum discharge pressure is necessary to ensure maximum levels of efficiency and productivity. However, higher than required discharge pressure could cause wastage of energy as well as damage to the system. This is because of the rise in temperature leading to metal fatigue of valves and thermal stress on lubricants.

Factors affecting discharge pressure

Discharge pressure of an air compressor is quite dynamic and a number of factors affect it. Some of these are:

  1. Size and speed of the condenser fan
  2. Size of the discharge line
  3. Condition of the condenser coil
  4. Leakage of air
  5. Cooling effect by oil, water , etc.
  6. Rotational speed in case of a screw compressor
  7. Voltage and frequency of the power grid
  8. Suction temperature and pressure

Impact of discharge pressure on system performance and efficiency

For starters, discharge pressure directly impacts the air flow of a compressor, and the simple Boyle’s Law equation can substantiate this. 

P1 x V1 = P2 x V2

However, compressed air isn’t free and with every unit rise in discharge pressure, there is a proportionate rise in energy consumption as well. In fact, it is widely believed that for every 2-psi increase in pressure, the energy consumption increases by 1 percent. So while increase in discharge pressure does boost your performance significantly, it also reduces the efficiency due to overconsumption of energy. Besides, higher levels of discharge pressure can also cause leaks in the system and reduce the distribution of the compressed air, while reducing the lifespan of the air compressor in the long run.

Optimal discharge pressure settings for different applications

It is quite clear that operating an air compressor and deciding the right discharge pressure requires  some amount of nuance. There is no on-size-fits-all for every application that you use your compressor for. Industrial applications usually require a pressure of 100-200 psi while if you’re using the compressor for domestic use, anything between 90-150 psi should be enough. Pneumatic tools like nail guns require a pressure of 90-100 psi while sandblasters and spray painters would typically need 120-150 psi.

Discharge pressure seems to be a straightforward notion. However, to ensure you get the maximum out of your air compressor without wasting energy, you must operate it at the right levels of discharge pressure. For more on air compressors, feel free to call us at 022 43436655 or email us at marketing@vemc.co.in. VEMC is the leading compressor dealer in Mumbai.

The Future of AI and Blockchain in Solar O&M

by vemcoblogs -

Solar energy is fast becoming one of the most favored sources of renewable energy across the world. But one of the most exciting aspects of solar PV systems is their ability to blend seamlessly with the latest technological developments across the board. AI and Blockchain are two new technologies that have a promising potential to drastically improve operations and maintenance in the solar energy space. VEMC is a leading solar energy company in Mumbai, and in this blog, we tell you all you need to know about the role of these technologies in solar energy.

Applications of AI in solar O&M

  • Predictive maintenance: 

An immense amount of thought, effort and finances go into maintaining solar power systems. But with the ability of processing past data through AI, you can zero in on equipment that need your immediate attention to prevent sudden breakdowns. This can  help reduce costs and avoid downtime.

  • Anomaly detection: 

With AI, anomalies can be detected with precision and in a timely manner. These include hotspots, potential induced defects (PID) or problems with diodes, strings or junction boxes.

  • Performance optimisation: 

AI can perform an enormous role in boosting the performance of your solar panels. Specialised algorithms can accurately perform data analysis to determine the optimal use of solar power. AI can also be used to monitor modules and micro-inverters for quick redressal of any anomalies. 

  • Automation: 

By analysing data from solar power systems, AI can help in automating the decision-making process and ensuring highest levels of efficiency and performance. 

Blockchain for secure data management and traceability

  • Asset tracking: 

As the solar energy industry is growing rapidly every passing year, its supply chain is becoming ever more complex creating challenges for traceability. With blockchain technology however, granular data can be collected at asset level and can be recorded on-chain.

  • Performance logging: 

With blockchain-based platforms, users can gain real-time insights for optimum performance of their on-grid solar system. The distributed ledger system helps monitor and log data exchange between panels, storage systems and the grid.

  • Warranty verification: 

With its decentralised and distributed ledger, blockchain technology can be used in keeping immutable records of warranty claims and records of equipment. These records cannot be tampered with and can thus offer an authentic and transparent warranty management mechanism.

Benefits of AI and Blockchain integration

  • Improved efficiency: 

One of the most outstanding benefits of both AI and blockchain technologies is more efficient operation of solar power systems.

  • Reduced costs: 

By streamlining the operations, AI and blockchain help in reducing human effort, cost of energy and material.

  • Enhanced transparency: 

These technologies offer highest levels of transparency in terms of authentic data records and documentation. Blockchain especially is a highly innovative way to capture and communicate important information across the solar power system.

For more on how technologies like AI and Blockchain can transform your conventional solar power system, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We are the industry leaders when it comes to solar power installation.

Air Compressor Dryers: Why They are Essential and How to Choose One

by vemcoblogs -

Air compressors find use in a number of industrial applications such as spray painting, packaging and drilling. But a common issue in air compressors is the accumulation of moisture which could be problematic for a number of reasons. This issue can be dealt with using the right kind of air dryer. VEMC is one of the leading air compressor dealers in Mumbai and in this blog, we tell you everything you need to know about air compressor dryers.

Why moisture in air compressors is problematic

Condensation of humidity inside an air compressor is a common issue and can appear in pipes, filters and other machinery. This can cause malfunction and breakdown of the equipment using the compressed air. Over the longer time horizon, it can be a cause for corrosion in the metallic parts. It is especially worrying if you are using the air compressor in packaging as the moisture can lead to the growth of moulds and cause spoilage of packaged items. To get rid of the moisture, air compressor dryers are essential accessories for your equipment.

Types of air dryers

Air compressors dryers are available in a number of variants each suited for a certain set of operations:

  1. Refrigerated air dryers: 

These air dryers condense the moisture in the air to very low temperatures, thus removing it and allowing the compressed air to proceed ahead to the attached tool.  These are available in cycling and non-cycling variants. The former supply variable cooling to match the demand while the latter supply constant cooling irrespective of the demand. Refrigerated air dryers are best suited for manufacturing and service applications but not for highly sensitive ones where even a little moisture can be problematic.

  1. Desiccant air dryers: 

These operate by desiccating the air using hygroscopic materials like silica gel or activated alumina. A twin-tower drying system is typically used both chambers of which contain desiccant materials. These air dryers are best suited for moisture-sensitive industrial applications such as healthcare, packaging, fabric manufacturing , etc.

  1. Membrane air dryers: 

These use specialised membranes to filter moisture out of the compressed air. The microtubules present in the membrane retain water while the dried air is allowed to pass through to the required application. These types of air dryers are best suited for applications such as food processing, dehumidification and gas separation. 

Choosing the right air dryer

Your choice of air dryer depends upon your specific needs as listed above and also your budget. For standardised functions, say in manufacturing, cost-effective air compressors like non-cyclic refrigerators are good enough. However, if your business applications are extremely moisture-sensitive, it is best to use slightly more expensive but highly effective desiccant air dryers.
For more information or guidance on the right air compressor dryers, feel free to call us on  022 43436655 or email us at marketing@vemc.co.in. VEMC is one of the top-notch air compressor dealers in Mumbai, with vast industry experience and cutting-edge expertise.

The ABCs of Air Compressor Accessories

by vemcoblogs -

Air compressors are the go-to equipment to generate power for a number of tasks in industrial as well as domestic settings. These include spray painting, drilling, cleaning etc. However, air compressors can offer optimum performance only when the accessories are functioning well. VEMC is the leading air compressor supplier in Mumbai, and in this blog, we acquaint you with the ABCs of air compressor accessories.

Types of accessories

  1. Filters: 

Air compressor filters are important to remove dust and debris and push out only clean compressed air. Their role is even more important in case you are using your air compressor in sensitive work environments like food processing. Rotary screw air compressors have three filters: an oil filter, an inlet filter and air/oil separator. While on an average, filters must be replaced every 2000 hours of service, they may need even more frequent replacement in dirtier conditions. Replacement helps prevent the oil from becoming contaminated and also the premature failure of the parts.

  1. Regulators: 

Air compressor regulators help control the air pressure in a pneumatic system. This ensures that the air compressor operates safely and at optimum levels of efficiency. 

  • General purpose regulators: These are best suited for use in industrial settings and operate above the atmospheric pressure.
  • High pressure regulators: These have an inlet pressure of 1000 psi.
  • Dual stage regulators: In these regulators, the liquid flows through a succession of chambers to deliver constant pressure.
  • Point-of-use regulators: These regulators are attached at or near a tool such as a pneumatic drill.

3. Lubricators: 

Air compressor lubricators help reduce friction between parts of an air compressor and dissipate the extra heat generated. An air compressor lubrication system comprises of a crankcase sump, strainer, filter and cylinder lubricator. The lubricating oil is contained in the compressor crankcase. A preset mark on the crankcase indicates the level of lubricating oil that must be present in it and thus helps at the time of replenishment. 

4. Valves: 

Air compressor valves control the in and out-flow of air or oil in a compressor.

  • Intake valve: As the name suggests, an intake valve enables the air to enter the compressor. This air is then directed to the compressor head where it is compressed.
  • Minimum pressure valve: It is located at the outlet above the oil-gas separator. It acts as a buffer to control the flow rate of the gas and prevent damage due to high-speed airflow.
  • Safety valve: This is important for the safety of the air compressor as it discharges some gas as soon as the pressure exceeds a certain level.

Choosing the right accessories

If you are looking for accessories for your air compressor, make sure you only choose the original ones. Only original accessories can guarantee optimum performance and a long service life. For more on air compressor accessories, get in touch with VEMC by calling on 022 43436655 or emailing us at marketing@vemc.co.in. We are the leading air compressor dealers in Mumbai.

Comparing the Different Types of HVAC Pumping Systems and their Suitability for Various Applications

by vemcoblogs -

For starters, HVAC stands of Heating, Ventilation and Air Conditioning. HVAC systems help in maintaining and moderating indoors environment, that is, humidity, air flow, temperature and air filtering. At the backend of the operations of HVAC systems, pumps play a critical role. VEMC is one of the leading water pump dealers based in Mumbai, and in this blog we compare the different HVAC pumping systems for your use.

Types and features of HVAC pumps

In systems which have a significant storage capacity, constant speed pumps are a better choice. The right kind of constant speed pump can in fact run at high efficiency as shown in the graph below:

2. Variable-speed pumps: 

These pumps are simply equipped with a Variable Speed Drive (VSD) to produce variable speeds. In case you are pumping water across flat ground, most of the energy is consumed in overcoming friction. Such a system requires a variable speed pump.

3. Single-stage pump: 

These pumps have one impeller that rotates on a shaft within a pump casing. It produces flow on being driven by a motor and has one of the simplest designs. They are quite useful in HVAC systems as they are close-coupled which means that the pump and the motor are separate units. These pumps are less sensitive to impurities in the liquid.

4. Multi-stage pumps: 

These pumps have multiple impellers and diffusers and can therefore pump liquid at much higher pressure than single-stage pumps depending on the number of stages and speed. Each stage is interconnected and feeds pressure into the next one thus cumulating the overall pressure significantly. These pumps can be installed both horizontally as well as vertically and can thus be adjusted well into your HVAC systems.

Choosing pumps for your HVAC system

The most common pump used in HVAC systems is the centrifugal pump available in circulator, single-stage, multi-stage, end-suction and vertical in-line variants. Which pump you choose for your HVAC system depends upon the unique needs of your building such as capacity, pressure required, space available , etc. 

For example, circulator pumps are used in systems which require low pressure and low capacity. These are typically under 150 gpm. End-suction pumps on the other hand are great for systems with capacities of up to 4000 gpm and head of 150 feet. Likewise, if your building has space constraints, the best option for you is the close-coupled pump that occupies less floor space. In case you require a lot of pressure, multistage pumps which build pressure incrementally with each stage are perfectly suited for your operations.

If you are looking for guidance for selecting the perfect pump for the HVAC systems, your search is over. Just get in touch with our experts by calling on 022 43436655 or emailing us at marketing@vemc.co.in. We are the leading water pump dealers based in Mumbai, with over 70 years of rich industry experience in pumping across a diverse client base.

The Intersection of IoT and Pump Monitoring: Kirlosmart Technology

by vemcoblogs -

Pump monitoring has in the past required regular visits, checks and inspections by technicians. This has naturally involved lot of training and labour costs to begin with. Besides, the precision of diagnosing the faults and issues is quite limited. With the advent of the Internet of Things (IoT) technology however, pump monitoring has been transformed overnight. VEMC is one of the leading Kirloskar pump distributors based in Mumbai, and in this blog, we tell you how IoT-based Kirlosmart has revolutionised pump monitoring for users at home, office and in factories.

Special features of Kirlosmart

Some outstanding features of Kirlosmart have made it the product of choice for consumers across the board:

  • Real-time data visualisation: 

Kirlosmart comes with an online app and web portal that displays all the pump parameters such as head, voltage, vibration etc. on a user’s dashboard. All the data is received from the pump sensors in real-time and enables the owners to respond to exigencies quickly.

  • Predictive maintenance alerts: 

Kirlosmart acts as an early warning system of sorts. As soon as some parameters are not within the normal range, it raises a predictive maintenance alert. 

  • Remote control: 

With Kirlosmart in place, users no longer have to visit the pump site physically but can control their pumps remotely from the comfort of their home. This reduces the costs of repeatedly visiting the pump site including the labour and training costs.

  • Scalability: 

Kirlosmart is a new technology that has vast potential in pump monitoring and is highly scalable. This means easy monitoring even in bigger organisations.

  • Ease-of-use: 

Kirlosmart has a user-friendly UX/UI which is very navigable, interactive and intuitive. All the information is readily available in the form of graphs and tables. This means no dedicated labour is required to monitor the pump regularly and everything is available at the user’s fingertips.

How Kirlosmart has transformed monitoring

1. Improves pump performance: 

Kirlosmart relies on a constant stream of data flowing in from the pump sensors. The data is then analysed using the software’s data analysis algorithm which presents it in the form of tables and graphs on a user’s smartphone app or laptop. With accurate and timely information at their fingertips, they can take the right measures to improve their pump performance.

2. Predicts maintenance needs: 

As soon as any parameter appears to be out of range, say too much vibration, it is a signal that the pump needs maintenance.

3. Prevents downtime: 

With early fault detection and timely intervention, sudden breakdown of the pumps is prevented. This saves a lot of repair and replacement costs and also the business costs associated with the breakdown.

Kirlosmart is a great leap towards blending IoT technology with pump monitoring. For more information on how Kirlosmart can help you transform your pumping experience, feel free to call us on 022 43436655 or email us at marketing@vemc.co.in. We are one of the top-notch Kirloskar pump distributors based in Mumbai.