37
Table 16 – COOLING CAPACITIES 1--STAGE COOLING 4 TONS
48TC05 (4 TONS) --- UNIT WITH HUMIDI---MIZER SYSTEM IN SUBCOOLING MODE
A i r E n t e r i n g E v a p o r a t o r --- C F M
Tem p (F ) A ir E nt
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
4 8 T C 0 5 ( 4 T O N S ) --- U N I T W I T H H U M I D I --- M I Z E R S Y S T E M I N H O T G A S R E H E A T M O D E
A i r E n t e r i n g E v a p o r a t o r --- C F M
Tem p (F ) A ir E nt
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
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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