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  1. emanager

    Calculating Flowrate Using Pressure

    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.
  2. emanager

    Lithium Bromide Double Effect HVAC Chiller Operations

    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...
  3. emanager

    COP clarification

    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...
  4. emanager

    Recommissioning Air Handling Units

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

    Recommissioning Air Handling Units

    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.
  6. emanager

    Definition of an Engineer

    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...

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