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.