79 performance data, Cooling capacities, standard units – Bryant DURAPAC 551B User Manual
Page 79
79
PERFORMANCE DATA
COOLING CAPACITIES, STANDARD UNITS
Do not operate at these conditions.
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
where h
ewb
= 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)
551B036 (3 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
900/0.14
1200/0.17
1500/0.20
Temp (F) Air Entering Evaporator — Ewb
78
72
67
62
78
72
67
62
78
72
67
62
75
TC
45.6
41.9
38.7
35.7
46.8
43.5
40.8
37.7
48.1
44.8
41.8
39.0
SHC
14.5
20.4
25.2
29.7
14.7
21.8
28.2
33.8
14.8
23.3
30.7
37.0
kW
2.24
2.19
2.16
2.12
2.26
2.21
2.18
2.15
2.28
2.23
2.19
2.16
85
TC
44.4
40.7
37.5
34.5
45.7
42.1
39.3
36.4
47.0
43.5
40.4
37.6
SHC
14.1
19.9
24.7
29.2
14.4
21.5
27.7
33.2
14.8
23.2
30.3
36.4
kW
2.51
2.46
2.42
2.39
2.53
2.47
2.44
2.41
2.54
2.50
2.45
2.42
95
TC
42.9
39.3
36.1
33.1
44.6
40.8
37.8
34.9
42.0
38.9
36.1
SHC
13.6
19.5
24.1
28.4
14.0
21.1
27.2
32.5
22.8
29.9
35.6
kW
2.80
2.75
2.71
2.66
2.83
2.77
2.73
2.69
2.79
2.74
2.71
105
TC
41.3
37.7
34.6
31.7
39.3
36.2
33.4
40.1
37.2
34.7
SHC
13.0
18.8
23.5
27.8
20.7
26.6
31.8
22.1
29.3
34.7
kW
3.11
3.06
3.02
2.98
3.09
3.04
3.01
3.10
3.06
3.03
115
TC
36.0
33.0
29.7
37.4
34.5
31.5
38.1
35.5
33.2
SHC
18.3
22.9
26.7
19.9
26.1
30.9
21.3
28.7
33.2
kW
3.41
3.36
3.31
3.43
3.39
3.34
3.44
3.41
3.37
125
TC
34.2
31.3
27.8
35.6
32.7
29.4
36.3
33.6
31.9
SHC
17.6
22.2
25.8
19.4
25.4
29.4
20.8
28.0
31.8
kW
3.78
3.73
3.66
3.80
3.76
3.71
3.81
3.78
3.75
551B048 (4 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
1200/0.17
1450/0.19
1600/0.21
2000/0.24
Temp (F) Air Entering Evaporator — Ewb
78
72
67
62
78
72
67
62
78
72
67
62
78
72
67
62
75
TC
58.6
54.0
50.7
44.2
59.6
55.9
52.2
47.7
59.9
56.4
52.8
49.1
61.5
58.1
54.5
50.6
SHC
18.3
26.1
32.7
37.5
18.7
27.6
35.1
41.8
18.7
28.2
36.2
43.8
19.2
30.2
39.5
47.5
kW
2.80
2.80
2.80
2.80
2.90
2.80
2.80
2.80
2.90
2.80
2.80
2.80
2.90
2.80
2.80
2.80
85
TC
56.4
52.2
48.9
41.9
57.3
54.1
50.4
45.9
58.1
54.5
51.0
47.2
59.5
55.3
52.3
48.7
SHC
17.6
25.4
32.0
36.4
17.9
26.9
34.5
40.8
18.2
27.5
35.7
42.8
18.5
28.6
38.5
46.6
kW
3.30
3.20
3.20
3.20
3.30
3.20
3.20
3.20
3.30
3.20
3.20
3.20
3.30
3.20
3.20
3.20
95
TC
54.2
50.7
46.9
39.5
55.0
51.9
48.4
43.5
56.3
52.5
48.9
45.2
57.5
53.9
50.1
46.7
SHC
16.9
24.9
31.1
35.0
17.2
26.1
33.6
39.6
17.6
26.8
34.7
41.8
17.8
28.8
37.5
45.6
kW
3.70
3.60
3.60
3.60
3.70
3.70
3.60
3.60
3.70
3.70
3.60
3.60
3.70
3.70
3.60
3.60
105
TC
52.0
48.8
44.5
36.7
52.7
49.8
46.2
40.7
53.8
50.2
46.7
42.1
54.7
51.5
48.2
44.7
SHC
16.2
24.3
30.2
33.6
16.5
25.3
32.8
38.2
16.8
26.0
33.9
40.3
17.1
27.9
37.4
44.4
kW
4.20
4.10
4.10
4.00
4.20
4.10
4.10
4.10
4.20
4.10
4.10
4.10
4.20
4.10
4.10
4.10
115
TC
49.9
46.5
41.1
34.3
50.4
47.7
43.3
37.0
41.3
48.0
44.4
38.5
51.9
48.9
45.7
42.0
SHC
15.5
23.4
28.9
32.4
15.8
24.9
31.8
36.3
16.0
25.4
33.4
38.3
16.3
27.1
36.9
42.0
kW
4.70
4.60
4.60
4.50
4.70
4.70
4.60
4.60
4.70
4.60
4.60
4.60
4.70
4.70
4.60
4.60
125
TC
47.5
43.8
37.5
32.4
45.1
39.0
33.8
45.3
40.1
35.4
46.3
42.6
38.8
SHC
15.0
22.5
27.4
31.5
24.1
30.2
33.7
24.7
31.9
35.4
26.5
35.9
38.8
kW
5.20
5.20
5.10
5.10
5.20
5.20
5.10
5.20
5.20
5.10
5.20
5.20
5.20
551B072 (5 TONS)
Temp (F)
Air Ent
Condenser
(Edb)
Temp (F) Air Entering Evaporator — CFM/BF
1500/0.08
1750/0.09
2000/0.11
2500/0.13
Temp (F) Air Entering Evaporator — Ewb
78
72
67
62
78
72
67
62
78
72
67
62
78
72
67
62
75
TC
80.4
70.8
65.4
58.5
82.5
72.5
67.3
61.1
83.7
73.0
68.4
62.8
74.8
70.3
64.8
SHC
25.6
34.1
42.7
49.9
26.1
35.7
45.5
54.2
26.3
36.8
48.0
57.8
39.6
53.0
63.4
kW
3.65
3.53
3.49
3.44
3.68
3.55
3.50
3.46
3.70
3.55
3.51
3.47
3.57
3.54
3.48
85
TC
78.5
68.9
63.2
55.3
70.5
65.1
57.9
72.2
66.4
60.2
73.2
68.1
62.9
SHC
25.1
33.5
41.8
48.4
35.0
44.8
52.8
37.0
47.6
56.8
39.3
52.5
62.4
kW
4.20
3.98
3.94
3.87
4.00
3.96
3.90
4.03
3.97
3.92
4.04
3.99
3.94
95
TC
66.8
60.6
52.4
68.3
62.5
54.3
69.3
63.8
56.6
71.2
65.6
60.6
SHC
32.8
40.7
47.0
34.5
43.8
51.1
36.0
46.7
55.0
39.1
51.8
60.5
kW
4.48
4.43
4.35
4.50
4.45
4.37
4.51
4.46
4.40
4.55
4.48
4.44
105
TC
64.3
57.7
49.9
65.9
59.8
51.7
66.9
61.1
54.1
68.4
62.8
58.4
SHC
32.0
39.6
45.8
33.7
42.8
49.7
35.3
45.7
53.5
38.4
51.0
58.4
kW
5.03
4.96
4.87
5.05
4.99
4.90
5.06
5.00
4.93
5.08
5.02
4.98
115
TC
61.5
54.8
47.3
62.8
56.7
49.1
64.0
58.2
51.6
65.4
59.9
56.1
SHC
31.0
38.4
44.5
32.5
41.6
48.2
34.4
44.6
51.6
37.4
50.0
56.1
kW
5.61
5.55
5.46
5.62
5.58
5.49
5.65
5.60
5.52
5.67
5.61
5.57
125
TC
58.7
51.6
44.5
59.9
53.4
46.2
60.8
54.9
49.0
62.2
56.8
53.5
SHC
30.0
37.2
43.1
31.7
40.4
46.2
33.3
43.4
48.9
36.4
48.9
53.4
kW
6.27
6.19
6.09
6.28
6.21
6.13
6.29
6.24
6.17
6.31
6.27
6.22
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
t
ldb
= t
edb
–
sensible heat capacity (Btuh)
1.1 x cfm
t
lwb
= wet-bulb temperature corresponding to enthalpy of
air leaving indoor coil (h
lwb
)
h
lwb
= h
ewb
–
total capacity (Btuh)
4.5 x cfm
0TF
Q
0
04-
01
2
5
5
1
B
03
6-
15
0