84 performance data (cont) – Bryant DURAPAC 551B User Manual
Page 84
84
PERFORMANCE DATA (CONT)
COOLING CAPACITIES, UNITS WITH PERFECT HUMIDITY™ OPTION (cont)
Do not operate at these conditions.
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
where hewb = enthalpy of air entering indoor coil
3. The SHC is based on 80 F edb temperature of air entering evaporator coil.
Below 80 F db, subtract (corr factor x cfm) from SHC.
Above 80 F db, add (corr factor x cfm) to SHC.
Correction Factor = 1.10 x (1 – BF) x (db – 80)
551B120 (10 TONS)
Temp (F)
Air Entering
Condenser
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
3000/0.025
3200/0.03
4000/0.035
5000/0.04
Temp (F) Air Entering Evaporator — Ewb
78
72
67
62
78
72
67
62
78
72
67
62
78
72
67
62
75
TC
146.2
134.3
122.5
111.4
147.2
135.8
124.3
113.0
147.6
138.4
129.5
123.5
153.6
143.3
136.5
130.2
SHC
42.7
60.0
76.1
93.7
43.5
61.3
79.1
97.4
47.5
68.0
89.5
109.4
49.2
75.2
100.9
123.3
kW
7.09
7.03
6.84
6.72
7.25
7.01
6.89
6.77
7.42
7.10
6.92
6.77
7.79
7.15
7.03
6.88
85
TC
139.5
127.6
115.4
104.6
140.5
128.9
118.1
107.0
132.5
121.5
116.6
137.2
128.0
122.9
SHC
35.4
51.5
68.8
87.2
36.5
53.9
72.0
91.2
61.0
82.7
102.4
68.6
93.6
115.9
kW
8.03
7.96
7.86
7.59
8.20
7.94
7.78
7.51
8.02
7.84
7.69
8.02
7.94
7.79
95
TC
133.5
120.9
108.3
97.8
121.9
111.8
101.0
126.5
113.4
109.7
131.1
119.4
115.5
SHC
29.5
43.0
61.5
80.6
46.5
64.8
84.9
53.9
75.9
95.4
62.0
86.2
108.4
kW
8.97
8.88
8.87
8.46
8.86
8.66
8.26
8.94
8.76
8.60
8.89
8.85
8.69
105
TC
112.0
99.9
90.4
113.1
103.2
93.4
117.2
105.0
100.7
122.1
110.5
105.9
SHC
36.1
54.1
73.8
38.8
57.8
78.9
45.6
68.2
86.8
53.0
78.3
99.7
kW
10.04
9.96
9.62
10.03
9.82
9.48
10.12
9.93
9.82
10.10
10.00
9.90
115
TC
103.0
91.5
83.1
104.3
94.6
85.9
107.8
96.7
91.7
113.0
101.6
96.4
SHC
29.2
46.7
66.9
31.2
50.7
72.9
37.3
60.6
78.3
44.0
70.3
90.9
kW
11.19
11.06
10.78
11.21
10.97
10.70
11.30
11.10
11.03
11.30
11.20
11.10
125
TC
94.1
83.1
75.7
95.5
86.0
78.3
98.5
88.3
82.7
104.0
92.7
86.8
SHC
22.3
39.3
60.1
23.5
43.7
66.8
29.0
52,8
69.7
35.0
62.4
82.2
kW
12.35
12.15
11.94
12.38
12.13
11.92
12.48
12.27
12.25
12.53
12.30
12.28
551B150 (12
1
/
2
TONS)
Temp (F)
Air Entering
Condenser
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
3750/0.08
4300/0.09
5000/0.11
6250/0.13
Temp (F) Air Entering Evaporator — Ewb
78
72
67
62
78
72
67
62
78
72
67
62
78
72
67
62
75
TC
172.0
156.3
144.2
132.3
174.3
160.0
148.4
136.2
177.4
162.8
150.6
138.2
183.6
169.0
157.5
145.6
SHC
41.4
66.6
87.6
112.1
43.2
72.5
94.8
121.3
43.6
76.9
99.6
127.5
65.5
87.0
115.5
142.7
kW
9.75
9.28
8.98
8.59
9.78
9.35
9.08
8.80
9.85
9.40
9.18
8.90
9.87
9.43
9.18
8.93
85
TC
164.0
147.6
136.2
123.7
165.4
150.7
140.1
127.2
154.1
140.8
127.9
161.1
148.0
135.4
SHC
41.9
58.7
80.0
103.8
43.2
63.5
86.5
112.2
68.7
91.0
118.1
77.7
107.8
133.2
kW
10.84
10.29
9.93
9.58
11.13
10.36
10.08
9.77
10.40
10.34
10.03
10.45
10.18
9.88
95
TC
155.5
138.9
128.2
115.1
141.4
131.8
118.3
145.3
131.0
117.6
153.1
138.4
125.1
SHC
35.1
50.8
72.3
95.5
54.4
78.1
103.2
60.5
82.3
108.7
68.5
100.0
123.7
kW
12.02
11.29
10.87
10.57
11.37
11.08
10.74
11.40
11.50
11.15
11.46
11.17
10.83
105
TC
129.1
117.8
105.8
131.7
121.0
108.7
134.8
119.9
107.7
140.9
126.9
115.9
SHC
42.1
63.5
86.5
45.4
69.0
93.9
51.2
74.2
101.3
57.7
90.2
113.6
kW
12.59
12.14
11.82
12.67
12.34
11.96
12.70
12.67
12.28
12.79
12.46
12.08
115
TC
119.2
107.3
96.4
122.1
110.2
99.0
124.2
108.8
97.8
128.7
115.3
106.7
SHC
33.5
54.8
77.5
36.4
59.8
84.7
41.9
66.1
93.8
46.8
80.5
103.5
kW
13.90
13.40
13.08
13.98
13.59
13.18
14.0
13.83
13.41
14.11
13.75
13.33
125
TC
109.4
96.9
87.1
112.4
99.4
89.3
113.7
97.7
87.8
116.5
103.8
97.5
SHC
24.8
46.0
68.5
27.4
50.7
75.5
32.6
58.0
86.4
36.0
70.7
93.5
kW
15.20
14.67
14.33
15.28
14.85
14.40
15.30
15.00
14.54
15.44
15.04
14.58
BF
—
Bypass Factor
Edb
—
Entering Dry Bulb
Ewb
—
Entering Wet Bulb
kW
—
Compressor Motor Power Input
SHC
—
Sensible Heat Capacity (1000 Btuh) Gross
TC
—
Total Capacity (1000 Btuh) Gross
tldb = tedb –
sensible heat capacity (Btuh)
1.1 x cfm
tlwb = wet-bulb temperature corresponding to
enthalpy of air leaving indoor coil (hlwb)
hlwb = hewb –
total capacity (Btuh)
4.5 x cfm
0
T
F
Q
0
04
-0
12
55
1B0
3
6-
15
0