the only consideration necessary. In this case, sensible load is immaterial. Example latent capacities for a typical ClimateMaster heat pump are shown in table 1. ClimaDry is especially useful in Northern Climates, where the heat pump may be oversized in the cooling mode to provide enough heating capacity. Units with ClimaDry will compensate for these applications
by operating as a whole house dehumidifier when necessary to maintain space Relative Humidity (RH).
Since the ClimaDry option is internal to the unit, installation is much easier than a separate whole house dehumidifier. Plus, an additional compressor and controls can be eliminated, simplifying the system and lowering operating and installation costs.
Figure 1: Example Size 036 Performance
Performance Data
Model 036
Table 1: Typical Unit Latent capacity
Latent Capacity at 85°F [29.4°C] EWT
Size | MBtuh | lbs/hr | kW | kg/hr |
|
|
|
|
|
18 | 4.7 | 4.4 | 1.4 | 2.0 |
|
|
|
|
|
24 | 6.1 | 5.7 | 1.8 | 2.6 |
|
|
|
|
|
30 | 6.8 | 6.4 | 2.0 | 2.9 |
|
|
|
|
|
36 | 9.6 | 9.0 | 2.8 | 4.1 |
|
|
|
|
|
42 | 11.0 | 10.3 | 3.2 | 4.7 |
|
|
|
|
|
48 | 12.7 | 11.9 | 3.7 | 5.4 |
|
|
|
|
|
60 | 15.2 | 14.2 | 4.5 | 6.4 |
|
|
|
|
|
70 | 16.9 | 15.8 | 5.0 | 7.2 |
|
|
|
|
|
Dividing the latent capacity by 1,069 BTU/LB of water vapor at 80°F DB and 67°F WB [26.7°C DB and 19.4°C WB] moist air enthalpy, converts the amount of moisture removal to pounds per hour (multiply pounds per hour by 0.4536 to obtain kg/hr). Calculations are shown in figure 1.
ClimaDry Whole House Dehumidification - ClimateMaster Geothermal Heat Pumps - Rev.: 18 April, 2008B
