Pump Motor Efficiency Requirements Part 2: Electronically Commutated Motors

Pump Motor Efficiency Requirements Part 2: Electronically Commutated Motors

Electronically commutated motors (ECMs) will play an important role in compliance with increasing motor efficiency requirements from the U.S. Department of Energy (DOE). But how do these motors differ from century-old direct current (DC) motor technology….

Read More

Domestic Water Pressure Booster Sizing Part 5: Selecting The Pressure Booster

Domestic Water Pressure Booster Sizing Part 5: Selecting The Pressure Booster

In our last blog, we determined that we required a 56 PSI pressure boost in our 100 Room Apartment example. Previous to that we determined (using the Hunters Curve) that we had a maximum total demand of 180 gpm. With these two values we are now prepared to select…

Read More

Domestic Water Pressure Booster Sizing Part 3: Estimating Fixture Demand Loads Using Hunters Curve

Domestic Water Pressure Booster Sizing Part 3: Estimating Fixture Demand Loads Using Hunters Curve

Today we are going to talk about fixture counts and introduce you to the Hunters Curve. Going back to the same simple example we used in Part 1 and Part 2 of this series , we know that each apartment in our 100 Room apartment building has one …

Read More