51
Table 31 – COOLING CAPACITIES 2--STAGE COOLING 12.5 TONS
580J14 COOLING CAPACITIE S, UNIT WITH PERFECT H UMIDITY SYSTEM IN SUBCOOLING MODE
TEMP (F) AIR ENT
CONDENSER (Edb)
AIR ENTERING EVAPORATOR --- CFM
3750/0.02 5000/0.06 6250/0.05
A i r E n t e r i n g E v a p o r a t o r --- E w b ( F )
72 67 62 72 67 62 72 67 62
75
TC 183.66 166.86 151.43 194.90 177.83 162.05 201.97 184.84 170.53
SHC 79.39 100.52 121.91 91.70 119.42 147.05 102.94 137.00 166.71
kW 9.82 9.63 9.46 9.58 9.76 9.96 10.04 9.84 9.67
85
TC 172.71 156.78 142.09 183.32 167.13 152.17 189.98 173.73 160.25
SHC 69.03 90.92 112.95 80.69 109.17 137.51 91.49 126.33 156.65
kW 10.82 10.63 10.45 10.57 10.76 10.96 11.04 10.84 10.67
95
TC 161.37 146.24 132.38 171.36 156.04 141.86 177.62 162.22 149.50
SHC 58.44 81.04 103.77 69.42 98.67 127.71 79.83 115.45 146.15
kW 11.92 11.73 11.56 11.68 11.86 12.05 12.14 11.93 11.77
105
TC 149.57 135.32 122.21 158.89 144.45 131.10 164.74 150.27 138.35
SHC 47.57 70.92 94.32 57.85 87.91 117.61 67.79 104.26 135.30
kW 13.12 12.94 12.77 12.89 13.06 13.24 13.32 13.13 12.97
115
TC 137.22 123.88 111.55 145.85 132.33 119.84 151.27 137.71 126.67
SHC 36.31 60.47 84.57 45.87 76.77 107.19 55.34 92.66 123.98
kW 14.41 14.25 14.10 14.20 14.35 14.53 14.59 14.42 14.28
580J14 COOLING CAPACITIES, UNIT WITH PERFECT HUMIDITY SYSTEM IN H OT GAS REH EAT MODE
TEMP (F)AIR ENT
CONDENSER(Edb)
AIR ENTERING EVAPORATOR --- Ewb (F)
75 Dry Bulb
62.5 Wet Bulb
(50% Relative)
75 Dry Bulb
64 Wet Bulb
(56% Relative)
75 Dry Bulb
65.3 Wet Bulb
(60% Relative)
A i r E n t e r i n g E v a p o r a t o r --- C f m
3750 5000 6250 3750 5000 6250 3750 5000 6250
80
TC 52.42 45.88 36.99 62.64 58.07 51.07 71.56 68.64 63.23
SHC --- 0.39 ---0.54 --- 0.67 --- 0.31 ---0.46 ---0.58 --- 0.26 --- 0.40 ---0.52
kW 9.65 9.39 9.07 9.97 9.77 9.50 10.25 10.11 9.89
75
TC 53.45 46.63 36.10 63.77 59.11 51.87 72.76 69.80 64.31
SHC 0.59 0.44 0.30 0.67 0.52 0.40 0.72 0.58 0.47
kW 9.09 8.83 8.49 9.39 9.20 8.94 9.67 9.53 9.32
70
TC 54.33 46.91 37.58 64.77 60.01 52.30 73.80 70.80 65.24
SHC 1.56 1.41 1.29 1.64 1.50 1.38 1.70 1.56 1.45
kW 8.81 8.53 8.62 9.15 8.94 8.65 9.46 9.31 9.08
60
TC 55.47 49.48 40.48 66.62 62.07 54.88 75.68 72.76 67.28
SHC 3.50 3.38 3.27 3.59 3.47 3.36 3.65 3.52 3.42
kW 8.36 8.84 8.98 9.88 9.56 9.10 9.83 9.64 9.31
50
TC 58.33 51.72 42.81 68.72 63.93 55.84 77.74 74.77 69.24
SHC 5.47 5.35 5.24 5.54 5.43 5.32 5.60 5.49 5.39
kW 8.98 9.25 9.43 9.33 8.97 8.73 9.55 9.33 9.70
40
TC 60.33 53.69 46.89 70.67 65.93 49.83 79.46 76.62 71.24
SHC 7.42 7.31 7.22 7.49 7.39 7.23 7.55 7.45 7.37
kW 9.16 9.88 9.06 9.50 9.05 9.47 10.31 10.00 9.48
NOTE: Perfect Humidity only available on 2---stage RTPF models.
LEGEND
Edb --- E n t e r i n g D r y --- B u l b
Ewb --- E n t e r i n g W e t --- B u l b
kW --- Compressor Motor Power Input
Idb --- L e a v i n g D r y --- B u l b
Iwb --- L e a v i n g W e t --- B u l b
SHC --- Sensible Heat Capacity (1000 Btuh) Gross
TC --- Total Capacity (1000 Btuh) Gross
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
t
ldb
=t
edb
–
sensible capacity (Btuh)
1.10 x cfm
t
lwb
= Wet--- bulb temperature corresponding to enthalpy of air
leaving evaporator coil (h
lwb
)
h
lwb
=h
ewb
–
total capacity (Btuh)
4.5 x cfm
Where: h
ewb
= Enthalp y of air entering evaporator coil
580J
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