Utility Rebate Programs Recognize HI Pump Rating System

Utility Rebate Programs Recognize HI Pump Rating System

In our last blog we introduced the new HI Energy Rating System for clean water pumps. The HI Rating System not only helps engineers pick a more efficient pump, it also makes it easy for utilities to develop incentives that rewards owners for using HI Rated equipment.  Several US utilities are already onboard…  

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A Better Way to Compare Pump Efficiency

A Better Way to Compare Pump Efficiency

Comparing pump efficiency just got a whole lot easier thanks to a new rating system developed by the Hydraulic Institute (HI). For the first time ever, pump specifiers or purchasers can go directly to an online tool where they can compare the numerical efficiency scores of any pump….

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Parallel Pumping in Condenser Applications: Part 1 of 5

Parallel Pumping in Condenser Applications: Part 1 of 5

Applying a single constant speed pump for each condenser in a chilled water application is a normal design for the HVAC engineer. Some chiller manufacturers suggest piping the pumps with a common header and activating each pump as the condensers are staged on. However, there is a hidden issue with this approach, which, if not addressed may cause major problems....

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Part Load Efficiency Values (PLEV) Part 5: BTUH Load Output vs. Percent of Flow Tolerance

Part Load Efficiency Values (PLEV) Part 5: BTUH Load Output vs. Percent of Flow Tolerance

We recently introduced the part load efficiency value (PLEV) aspect of the Bell & Gossett online pump selection tool. PLEV for pumps is based on flow rate while the Integrated Part Load Value (IPLV) for chillers is based on load. This final segment on PLEV will look at the difference.

Let’s begin by examining....

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Part Load Efficiency Values (PLEV) Part 4: End of Curve Selections

Part Load Efficiency Values (PLEV) Part 4: End of Curve Selections

When looking at Bell & Gossett pump selections we often find higher part load efficiency (PLEV) pump choices are to the right of BEP or best efficiency point. How close to end of curve should a prudent engineer choose?

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