52
Table 31 – COOLING CAPACITIES 2--STAGE COOLING 12.5 TONS
48TC14 COOLING CAPACITIES, UNIT WITH HUMIDI---MIZER 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
48TC14 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
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
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
To Next Page
Loading...
