Choosing the Right Pumps for Your HVAC Systems

HVAC residential unitCompressors, centrifugal pumps, and condensers are some of the valuable components that make up an HVAC system. Many businesses depend on the efficiency of their pump systems, but without the proper expertise, their operations would suffer a setback and affect the productivity of their process.

The Hydraulic Institute evaluated centrifugal pumps at 20 plants and found that the majority of these operated at 40% below the efficiency rate. Additionally,  the survey found that 10 percent of the pumps worked below 10 percent of the efficiency rate.

The Right Pump

One of the major causes was improper pump selection. Engineers should operate a pump close to its best efficiency point (BEP).  If your pump operates below its BEP, the radial forces on the pump increase. To choose the right centrifugal pump, it is essential to have a pump curve for accuracy.

Read the Pump Curve

Different types of pumps require different types of pump performance curves as well. For centrifugal pumps, you need to know about flow, head, and impeller trim.

Your engineers should also understand variable speed, horsepower, and minimum flow to ensure that the pump is operating efficiently and using less energy.  Pumps that operate below the BEP consume too much energy and perform below the efficiency rate.

The Right Pump

Engineers often choose pumps that are oversized for the intended operation. This is intended as a safety factor in many pump systems. However, the addition of too many safety factors makes the pump inefficient. Check with the pump manufacturer if they use computer models to check various flow conditions.

Pumps are designed to last 20 or more years, but many companies change their pump systems in five years, which translates to unnecessary expenses. Find the right pump manufacturer who could supply your company with high-quality pumps and expertise in maintenance and service, and your pumping system will boost your company’s operational efficiency.