Carrier HRVCCLHA Product Data page 8

COOLING LOAD BTU
Cooling Load (BTUh) @ Inside Design
Outside Outside Temp 75°F and 50% Relative Humidity
Enthalpy
Btu/lb
HRVCCLHA1150
30 670
31 1,090
32
1,509
33 1,928
34
2,347
35 2,766
36
3,185
37 3,604
38 4,023
39 4,442
40 4,861
41 5,280
42 5,699
HRVCCLHA1250
1,071
1,741
2,411
3,080
3,750
4,419
5,089
5,759
6,428
7,098
7,767
8,437
9,107
The cooling load chart shows the loads in BTUh also. To use the
cooling load chart, first find the design enthalpy from a
psychrometric chart using the design dry bulb and wet bulb
temperatures. (See following psychrometric chart.) The cooling
load can then be found for a range of enthalpies for each
ventilator.
EXAMPLE:
The cooling design dry bulb temperature for
Milwaukee, WI, is 87_F and the average wet bulb at that
temperature is 73_F. On the psychrometric chart the enthalpy is
about 37.7 BTU/lb of dry air which will round up to 38 BTU/lb
of dry air. In the left column, at 38 BTU/lb the HRVCCLHA1250
would have an additional cooling load of 6428 BTUh. This
additional load should be taken into account when sizing the air
cooling equipment.
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