-
111
-
(e) Correction of heating capacity in relation to the frost on the outdoor unit heat exchanger
(d) When the outdoor unit is located at a lower height than the indoor unit in cooling operation and when the
outdoor unit is located at a higher height than the indoor unit in heating operation, the following values
should be subtracted from the values in the above table.
The correction factors will change drastically according to weather conditions. So necessary adjustment should be
made empirically according to the weather data of the particular area.
Height difference between the indoor unit and
outdoor unit in the vertical height difference
Adjustment coefficient
15 m
0.97
10 m
0.98
5 m
0.99
20 m
0.96
25 m
0.95
30 m
0.94
Height difference between the indoor unit and
outdoor unit in the vertical height difference
Adjustment coefficient
45 m
0.91
40 m
0.92
35 m
0.93
50 m
0.90
(f) The capacity compensation coefficient and power consumption compensation coefficient vary
according to the total capacity of concurrently operating indoor units, as shown below.
-11
0.95
-13
0.96
-20
0.96
-15
0.96
-9
0.94
-7
0.93
-5
0.91
-3
0.88
-1
0.86
1
0.87
3
0.92
5 or more
1
Air inlet temperature of
outdoor unit in ËšC WB
Adjustment coefficient
â—† Capacity compensation coefficient
â—† Power consumption compensation coeffcient
020
0
0.2
0.4
0.6
0.8
1.0
1.2
40 60 80 100 120 140 160
Heating
Capacity consumption
compensation
Total capacity of concurrently operating indoor units (%)
020
0
0.2
0.4
0.6
0.8
1.0
1.2
40 60 80 100 120 140 160
Heating
Power consumption
compensation coefficient
Total capacity of concurrently operating indoor units (%)
020
0
0.2
0.4
0.6
0.8
1.0
1.2
40 60 80 100 120 140 160
Cooling
Capacity consumption
compensation
Total capacity of concurrently operating indoor units (%)
020
0
0.2
0.4
0.6
0.8
1.0
1.2
40 60 80 100 120 140 160
Cooling
Power consumption
compensation coefficient
Total capacity of concurrently operating indoor units (%)
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