Cooling capacity relation with air temperature.

Samart · 06-23-2011, 01:26 AM

I have noticed on some ac units the total cooling capacity at 80F air temperature is more than the cooling capacity at 75F air temp while the RH is 50% at both the temperatures. I mean why the total cooling capacity is not more at 75F?

Please help me understand how that is possible. Although the sensible cooling capacity is higher at 75F.

HVACDave · 06-23-2011, 11:06 AM

Are you talking window units?

**beenthere** · 06-23-2011, 08:39 PM

Less heat in the air at 75 then at 80. The A/C can only remove heat if its there to remove.
Next, 50% RH at 80 is a lot more moisture in the air then at 70.