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Is there a formula to calculate flowrate (gallons per minute) for a 6 inch diameter chilled water pipe if I only have 2 values for pressure - 45 psi and 75 psi. Thanks.

Check this out... http://www.newbuildings.org/downloads/guidelines/AbsorptionChillerGuideline.pdf I used to work for Hitachi Ltd when we were selling waste heat and direct fired 2 stage steam absorption chillers. These machines have excellent part load performance but require a larger cooling...

You mentioned that you have 6000btu units. What is the amperage of the units when the unit is fully running ? If your voltage is 120v and the amperage is, for example - 5 amps then power used is 5 x .120 = .60 kw for 6000btu or 1.2 kw per ton which is the same as an EER of 10. Compare the EER of...

Thanks for the (headslap!) Here's what I've found... http://www.seattle.gov/light/conserve/business/BdgComA/bca1.pdf

Can anyone provide a link to a PDF document or to a www site that provides a step by step recommissioning procedure for Air Handling Units - we'd like to measure airflow, waterflow, and temperatures to quantitatively assess the performance of our ahus.

A man is flying in a hot air balloon and realizes he is lost. He reduces height and spots a man down below. He lowers the balloon further and shouts: "Excuse me, can you tell me where I am?" The man below says: "Yes, you're in a hot air balloon, hovering 30 feet above this field." You must be...