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2.5 Selection chart
Correct the cooling capacity in accordance with the conditions as follows. The net cooling capacity can be obtained in the following way.
Net capacity = Capacity shown on specification
( 1 ) Coefficient of cooling capacity in relation to temperatures
( 2 ) Correction of cooling capacity in relation to one way length of refrigerant piping
It is necessary to correct the cooling capacity in relation to the one way piping length between the indoor and outdoor units.
Piping length [m]
Cooling
How to obtain the cooling capacity
Example : The net cooling capacity of the model SRK25CIS with the piping length of 15m, indoor wet-bulb temperature at 19.0˚C and
outdoor dry-bulb temperature 35˚C is Net cooling capacity =
1.3
1.2
Cooling
1.1
1.0
0.9
0.8
0.7
0.6
43
40
35
30
25
20
15
Indoor air W.B. temperature ˚C W.B.
7
10
15
1.0
0.99
0.975
Correction factors as follows.
Applicable range
14
16
18
ISO-T1 Standard Condition
20
25
0.965
0.95
7000
0.975
Length 15m
SRK25CIS
9
-
-
24
20
22
1.0
=
6825 W
Factor by air
temperatures
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