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580D120 (10 TONS)
Temp (F)
3000/0.095
Air Entering
Condenser
(Edb)
72
67
TC
135.8
124.8
75
SHC
66.8
82.6
kW
9.76
9.41
TC
130.0
119.6
85
SHC
64.3
80.5
kW
10.41
10.07
TC
124.1
113.7
95
SHC
62.2
78.4
kW
11.13
10.78
TC
118.1
104.6
105
SHC
60.4
74.9
kW
11.93
11.52
TC
115.0
98.0
115
SHC
59.4
72.4
kW
12.26
11.82
580D150 (12
1
⁄
TONS)
2
Temp (F)
3750/0.08
Air Entering
Condenser
(Edb)
72
67
TC
175.6
162.2
75
SHC
85.7
107.3
kW
11.16
10.85
TC
169.3
155.7
85
SHC
83.9
104.8
kW
12.15
11.78
TC
161.9
148.9
95
SHC
81.4
102.0
kW
13.12
12.72
TC
154.9
141.3
105
SHC
79.0
99.2
kW
14.16
13.66
TC
146.2
132.2
115
SHC
76.1
95.7
kW
15.09
14.57
Standard Ratings
LEGEND
BF
— Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW
— Compressor Motor Power Input
Ldb — Leaving Dry-Bulb
Lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC
— Total Capacity (1000 Btuh) Gross
PERFORMANCE DATA (cont)
COOLING CAPACITIES (cont)
Air Entering Evaporator — Cfm/BF
4000/0.125
Air Entering Evaporator — Ewb (F)
62
72
67
62
112.0
142.4
130.6
119.8
97.4
73.2
93.4
112.7
9.10
10.00
9.61
9.27
104.0
136.0
125.0
114.5
93.8
71.1
91.7
110.2
9.74
10.67
10.28
9.94
96.7
129.5
118.9
106.9
90.0
69.1
89.8
105.9
10.40
11.38
10.99
10.63
87.9
122.7
111.8
98.5
85.2
66.9
87.7
98.5
11.10
12.13
11.74
11.41
84.2
120.0
103.8
93.4
83.4
66.4
84.8
93.4
11.40
12.48
12.06
11.78
Air Entering Evaporator — Cfm/BF
4500/0.09
Air Entering Evaporator — Ewb (F)
62
72
67
62
149.2
181.0
167.5
154.2
128.0
91.4
116.2
140.3
10.57
11.32
11.00
10.69
140.6
174.2
160.7
147.0
124.0
89.6
113.9
137.0
11.42
12.31
11.94
11.58
132.0
166.8
153.5
139.1
119.8
87.0
111.1
133.2
12.28
13.30
12.89
12.46
123.0
158.8
145.4
130.2
115.5
84.5
108.2
128.1
13.17
14.31
13.82
13.35
113.1
150.5
137.0
122.4
110.3
81.7
105.2
122.3
14.07
15.30
14.76
14.25
5000/0.15
72
67
62
146.5
134.2
123.7
79.7
104.4
123.1
10.17
9.75
9.41
140.0
127.9
118.8
77.5
101.8
118.7
10.84
10.41
10.09
132.8
122.0
114.1
74.9
100.1
114.0
11.52
11.14
10.83
126.0
115.1
108.0
73.1
98.3
108.0
12.27
11.89
11.65
122.6
109.8
102.8
72.8
96.9
102.8
12.60
12.20
12.00
5000/0.10
72
67
62
72
182.9
170.2
156.4
187.2
94.2
122.2
146.5
102.1
11.37
11.07
10.73
11.49
176.9
163.0
149.7
181.5
92.7
119.7
143.6
100.9
12.39
12.01
11.63
12.53
169.5
155.7
142.8
173.2
90.7
117.3
140.2
98.3
13.40
12.97
12.56
13.54
160.9
147.6
135.0
165.3
87.8
114.3
134.9
96.6
14.38
13.91
13.48
14.58
152.3
139.4
127.8
155.2
85.0
111.6
127.7
92.9
15.37
14.87
14.43
15.49
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
t ldb = t edb −
t lwb = Wet-bulb temperature corresponding to enthalpy of air leav-
ing evaporator coil (h lwb )
total capacity (Btuh)
h lwb = h ewb −
Where: h ewb = Enthalpy of air entering evaporator coil
3. The SHC is based on 80 F edb temperature of air entering evapo-
rator coil.
Below 80 F edb, subtract (corr factor x cfm) from SHC.
Above 80 F edb, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 − BF) x (edb − 80).
28
6250/0.12
67
62
174.7
161.8
135.3
160.7
11.19
10.87
167.3
155.8
133.4
155.6
12.14
11.82
159.5
149.6
130.8
149.6
13.11
12.78
151.2
143.2
127.8
143.1
14.07
13.77
142.7
136.0
125.0
135.8
15.02
14.73
1.10 x cfm
4.5 x cfm
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