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  1. #1

    Entering Fluid Temp, SHR and ADP heat pump

    Looking at a water heat pump spec sheet

    CAPACITY DATA (all performance at 650 CFM and 5.0 GPM)
    COOLING 50F to 100F

    Trying to figure out the following info:

    Entering Fluid Temp. (50 F)
    Entering Air Temp. (DB: 75F and WB: 63F)

    Total Cap.: 20.53 MBTU/h
    Sensible Cap.: 15.00 MBTU/h
    SHR: 0.73

    Graphically I find an ADP of 46F. How can that be? If my ADP is 46F, The fluid temp should be even lower no?

  2. #2
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    Redo your calcs. I think it comes out closer to 56.
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  3. #3
    I didn't calculate anything I just pulled a straight line between the SHR and the 100% HR curve crossing the entering air value (DB, WB)

  4. #4
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    Sorry. I meant you'll find that the dew point of your air at those temp conditions is 56F.
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  5. #5
    I understand the dew point is 56F for that given value.

    But isnt the entering fluid temp the temperature inside the evaporator? Therefore more or less the ADP?

  6. #6
    Join Date
    Jan 2004
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    The water/fluid temp isn't your actual ADP temp. The coil is still warmer yet.

    This may or may not help you.
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