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50TFF009 (24.3 kW)
Temp (C)
Air Entering
Condenser
(Edb)
13
TC
24.7
20
SHC
24.1
kW
6.25
TC
24.0
24
SHC
23.4
kW
6.61
TC
23.0
28
SHC
22.5
kW
7.00
TC
22.3
32
SHC
21.7
kW
7.32
TC
21.7
35
SHC
21.1
kW
7.56
TC
20.7
40
SHC
20.1
kW
7.96
TC
19.9
44
SHC
19.3
kW
8.29
TC
19.1
48
SHC
18.5
kW
8.62
LEGEND
BF
— Bypass Factor
Edb
— Entering Dry Bulb Temperature (C)
Ewb — Entering Wet Bulb Temperature (C)
kW
— Compressor Input (kW)
SHC — Sensible Heat Capacity (kW)
TC
— Total Capacity (kW)
NOTES:
1. Ratings are gross, and do not account for the effects of the
evaporator-fan motor power and heat.
2. Direct interpolation is permissible. Do not extrapolate.
3. SHC is based on 26.7 C db temperature of air entering the unit. At
any other temperature, correct the SHC read from the table of cool-
ing capacities as follows:
Corrected SHC
kW
–3
= SHC + [1.23 x 10
x (1 – BF) x (C
Observe the rule of sign. Above 26.7 C, SHC correction will be posi-
tive; add it to SHC. Below 26.7 C, SHC correction will be negative;
subtract it from SHC.
COOLING CAPACITIES — SI (cont)
1200/0.07
16
19
22
25.2
28.4
30.8
23.2
19.3
15.0
6.38
6.60
6.70
24.3
27.5
30.3
22.8
19.0
14.8
6.69
6.96
7.09
23.2
26.5
29.6
22.0
18.7
14.6
7.06
7.33
7.48
22.4
25.5
28.7
21.4
18.4
14.3
7.36
7.71
7.87
21.7
24.6
28.0
20.9
17.9
14.1
7.59
8.01
8.17
20.7
23.1
26.7
20.1
17.4
13.6
7.96
8.44
8.66
19.9
22.0
25.5
19.3
16.9
13.2
8.29
8.78
9.04
19.1
20.8
24.3
18.5
16.4
12.8
8.62
9.05
9.42
LEGEND AND NOTES FOR COOLING CAPACITY TABLES — SI
– 26.7) x L/s]
db
Air Entering Evaporator — L/s/BF
1400/.08
Air Entering Evaporator — Ewb (C)
13
16
19
26.0
26.2
29.1
25.2
24.6
20.5
6.60
6.68
6.97
25.5
25.5
28.4
24.6
24.3
20.4
6.97
7.02
7.35
24.7
24.7
27.5
23.9
23.9
20.1
7.34
7.34
7.71
23.7
23.7
26.3
22.8
22.8
19.7
7.72
7.72
8.09
23.1
23.0
25.6
22.2
22.2
19.5
8.00
7.99
8.37
22.0
22.0
23.9
21.2
21.2
18.8
8.42
8.41
8.82
21.2
21.2
22.7
20.3
20.3
18.3
8.75
8.75
9.15
20.3
20.3
21.5
19.4
19.4
17.8
9.08
9.08
9.48
4. Formulas:
SHC
C
= C
–
ldb
edb
Leaving wet bulb = wet bulb temperature corresponding to enthalpy
of air leaving coil (h
TC
h
= h
–
lwb
ewb
1.20 x L/s
Where h
is enthalpy of air entering evaporator coil (kJ/kg).
ewb
1700/0.11
22
13
16
31.5
27.9
27.9
15.5
26.5
26.5
7.06
7.25
7.25
30.9
27.1
27.1
15.4
25.7
25.8
7.46
7.61
7.60
30.3
26.4
26.4
15.2
25.0
25.0
7.86
7.98
7.97
29.4
25.6
25.6
15.0
24.2
24.2
8.25
8.37
8.36
28.7
25.0
25.0
14.8
23.6
23.6
8.57
8.66
8.65
27.4
23.6
23.6
14.3
22.2
22.2
9.06
9.15
9.14
26.3
22.7
22.7
14.0
21.3
21.3
9.44
9.52
9.51
25.0
21.8
21.8
13.5
20.4
20.4
9.83
9.88
9.87
x 1000
kW
1.23 x L/s
).
lwb
x 1000
kW
19
22
29.9
32.2
22.0
16.0
7.66
7.73
29.3
31.6
22.0
16.0
8.04
8.14
28.4
31.0
21.8
15.9
8.42
8.55
27.3
30.2
21.5
15.7
8.77
8.96
26.4
29.4
21.2
15.4
9.03
9.27
25.0
28.2
20.7
15.1
9.47
9.78
23.7
27.0
20.2
14.8
9.80
10.17
22.3
25.8
19.5
14.4
10.10
10.56
17
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