How To Size A Waterside Economizer Part 1: How ASHRAE 90.1 Updates Have (Or WILL) Change Chilled Water Design

Has your state adopted ASHRAE 90.1-2010 or beyond into its commercial building code? If so, then it is highly likely that you should be incorporating either waterside or airside economizing into your cooling design. The Standard has effectively made air or waterside economizing a requirement in virtually every…

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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…

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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 …

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