Bell & Gossett introduces PLEV formula to gauge performance

PLEV, which stands for Part Load Efficiency Value, is a new standard for the industry, which provides accurate and efficient specification of a centrifugal pump at partial flow rates.

Until now, a system designer specified a pump at maximum capacity or flow at all times during pump operation, even though a pump operates at 100% flow just 1% of the time. PLEV is calculated based on the partial load that a pump will experience throughout its operation. B&G’s ESP-PLUS pump selection and system design software has been updated with the PLEV selection criteria to assist specifying engineers.

PLEV is derived from the successful Integrated Part Load Value (IPLV) performance calculation developed by the Air-Conditioning, Heating and Refrigeration Institute (AHRI). It is used to calculate equipment efficiency while operating at various capacities in a chiller system, leading to energy and cost savings.

The free PLEV application will be available online through the Xylem software ESP-PLUS.