Entering Fluid Temp, SHR and ADP heat pump

[guitarboyled]

Looking at a water heat pump spec sheet

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

Trying to figure out the following info:

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

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

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

[beenthere]

Redo your calcs. I think it comes out closer to 56.

[guitarboyled]

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)

[beenthere]

Sorry. I meant you'll find that the dew point of your air at those temp conditions is 56°F.

[guitarboyled]

I understand the dew point is 56°F for that given value.

But isn’t the “entering fluid temp” the temperature inside the evaporator? Therefore more or less the ADP?

[beenthere]

The water/fluid temp isn't your actual ADP temp. The coil is still warmer yet.

This may or may not help you.