47
Table 26 – COOLING CAPACITIES 2--STAGE COOLING 8.5 TONS
48TC09 COOLING CAPACITIES, UNIT WITH HUMIDI---MIZER SYSTEM IN SUBCOOLING MODE
TEMP (F) AIR ENT
CONDENSER (Edb)
AIR ENTERING EVAPORATOR --- CFM
2550/0.04 3400/0.05 4250/0.07
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 119.20 107.44 96.41 126.95 114.98 103.92 131.87 119.81 109.54
SHC 50.63 63.94 77.40 59.17 76.72 94.21 66.80 88.44 108.22
kW 5.67 5.57 5.47 5.54 5.63 5.74 5.79 5.68 5.59
85
TC 110.40 99.22 88.76 117.63 106.26 95.77 122.21 110.77 101.07
SHC 42.39 56.16 70.07 50.42 68.45 86.38 57.71 79.86 99.95
kW 6.33 6.23 6.14 6.20 6.30 6.40 6.45 6.34 6.25
95
TC 101.37 90.79 80.86 108.07 97.31 87.39 112.29 101.47 92.38
SHC 33.97 48.22 62.56 41.46 60.01 78.39 48.40 71.09 91.47
kW 7.08 6.99 6.90 6.96 7.05 7.16 7.20 7.09 7.01
105
TC 92.04 82.06 72.71 98.19 88.05 78.72 102.07 91.86 83.40
SHC 25.31 40.06 54.88 32.24 51.33 70.17 38.85 62.06 82.67
kW 7.94 7.85 7.77 7.83 7.91 8.01 8.06 7.95 7.87
115
TC 82.37 73.01 64.24 87.95 78.45 69.73 91.46 81.90 74.09
SHC 16.38 31.65 46.95 22.71 42.37 61.69 28.94 52.74 73.52
kW 8.92 8.84 8.77 8.82 8.89 8.98 9.02 8.93 8.86
48TC09 COOLING CAPACITIES, UNIT WITH HUMIDI---MIZER SYSTEM IN HOT GAS REHEAT 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
2550 3400 4250 2550 3400 4250 2550 3400 4250
80
TC 37.61 33.13 26.77 44.74 41.60 36.46 50.96 48.99 44.93
SHC --- 0.52 ---0.63 --- 0.73 --- 0.46 ---0.57 --- 0.67 --- 0.42 ---0.53 --- 0.62
kW 5.88 5.68 5.44 6.13 5.97 5.76 6.35 6.24 6.06
75
TC 38.71 34.24 27.86 45.84 42.73 37.59 52.05 50.11 46.06
SHC 0.45 0.34 0.25 0.50 0.40 0.31 0.54 0.44 0.36
kW 5.68 5.47 5.22 5.94 5.78 5.56 6.18 6.07 5.88
70
TC 39.70 35.25 28.83 46.80 43.70 38.59 52.97 51.04 47.02
SHC 1.41 1.32 1.23 1.47 1.37 1.29 1.50 1.41 1.34
kW 5.65 5.42 5.24 5.97 5.79 5.53 6.26 6.13 5.91
60
TC 41.77 37.33 30.76 48.86 45.80 40.71 55.00 53.10 49.12
SHC 3.34 3.26 3.18 3.40 3.32 3.25 3.43 3.36 3.29
kW 5.42 5.15 5.17 5.80 5.59 5.30 6.16 6.01 5.75
50
TC 43.83 39.27 32.61 50.92 47.89 42.70 57.04 55.16 51.22
SHC 5.27 5.21 5.14 5.32 5.27 5.21 5.36 5.31 5.25
kW 5.18 5.15 5.17 5.62 5.39 5.05 6.04 5.87 5.59
40
TC 45.75 41.13 34.50 53.08 50.00 44.64 59.24 57.40 53.44
SHC 7.20 7.15 6.95 7.26 7.21 7.16 7.29 7.25 7.21
kW 4.79 4.98 4.80 5.25 5.01 5.23 5.68 5.51 5.21
LEGEND
E d b --- E n t e r i n g D r y --- B u l b
E w b --- E n t e r i n g W e t --- B u l b
kW --- Compressor Motor Power Input
I d b --- L e a v i n g D r y --- B u l b
I w b --- 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 f ollowing 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
= Enthalpy of air entering evaporator coil
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