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Table 16 – COOLING CAPACITIES 1--STAGE COOLING 4 TONS
580J05 (4 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN SUBCOOLING MODE
A ir E n te ri n g E va p or a to r --- CF M
Temp (F) Air Ent
Condenser (Edb)
80 dry bulb 80 dry bulb 80 dry bulb
72 wet bulb 67 wet bulb 62 wet bulb
1200 1600 2000 1200 1600 2000 1200 1600 2000
75
TC 52.5 55.9 58.6 47.1 50.2 52.7 41.7 44.5 46.8
SHC 22.6 25.5 27.8 27.1 29.9 32.0 31.6 34.2 36.2
kW 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
85
TC 48.7 52.2 54.9 43.4 46.5 49.0 38.0 40.8 43.1
SHC 18.0 21.3 23.9 23.6 26.8 29.2 29.3 32.2 34.4
kW 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9
95
TC 44.9 48.4 51.2 39.6 42.8 45.3 34.3 37.1 39.4
SHC 13.4 17.2 20.0 20.2 23.7 26.4 27.0 30.2 32.7
kW 3.4 3.4 3.4 3.3 3.3 3.3 3.3 3.3 3.3
105
TC 41.1 44.7 47.5 35.9 39.1 41.7 30.6 33.5 35.8
SHC 8.8 13.0 16.1 16.7 20.6 23.6 24.6 28.2 31.0
kW 3.8 3.8 3.8 3.7 3.7 3.7 3.7 3.7 3.7
115
TC 37.4 41.0 43.9 32.1 35.4 38.0 26.8 29.8 32.1
SHC 4.3 8.8 12.2 13.3 17.5 20.7 22.3 26.2 29.2
kW 4.2 4.2 4.2 4.2 4.2 4.2 4.1 4.1 4.1
580J05 (4 TONS) --- UNIT WITH PERFECT HUMIDITY SYSTEM IN HOT GAS REHEAT MODE
A ir E n te ri n g E va p or a to r --- CF M
Temp (F) Air Ent
Condenser (Edb)
75 dry bulb 75 dry bulb 75 dry bulb
62.5 wet bulb (50% relative) 64 wet bulb (55% relative) 65.3 wet bulb (60% relative)
1200 1600 2000 1200 1600 2000 1200 1600 2000
80
TC 11.6 13.8 15.5 13.5 15.8 17.6 15.2 17.5 19.3
SHC --- 1.0 1.2 3.0 --- 3.1 --- 0.8 0.9 --- 4.8 --- 2.6 --- 0.9
kW 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
75
TC 12.5 14.6 16.2 14.3 16.4 18.1 15.9 18.1 19.8
SHC --- 0.7 1.4 3.0 --- 2.7 --- 0.6 1.1 --- 4.3 --- 2.2 --- 0.6
kW 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
70
TC 13.4 15.3 16.8 15.1 17.1 18.7 16.6 18.7 20.3
SHC --- 0.5 1.5 3.0 --- 2.3 --- 0.3 1.2 --- 3.8 --- 1.9 --- 0.3
kW 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5
60
TC 15.1 16.8 18.1 16.7 18.4 19.8 18.1 19.9 21.2
SHC 0.0 1.7 3.1 --- 1.5 0.2 1.5 --- 2.8 --- 1.1 0.2
kW 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6
50
TC 16.9 18.3 19.4 18.3 19.8 20.9 19.6 21.0 22.2
SHC 0.6 2.0 3.1 --- 0.7 0.7 1.8 --- 1.8 --- 0.4 0.7
kW 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6 2.6
40
TC 18.7 19.8 20.7 19.9 21.1 22.0 21.0 22.2 23.2
SHC 1.1 2.2 3.1 0.1 1.2 2.1 --- 0.8 0.4 1.3
kW 2.6 2.6 2.6 2.7 2.7 2.7 2.7 2.7 2.7
LEGEND
Edb --- Entering Dry --- Bulb
Ewb --- En tering Wet --- Bulb
kW --- Compressor Motor Power Input
Idb --- Leav ing Dry --- Bulb
Iwb --- Leaving Wet --- B ulb
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
= Enthalpy of air entering evaporator coil
580J