Cooling capacities (cont) – Bryant 549B User Manual
Page 83
83
PERFORMANCE DATA — 549B, 549C (cont)
COOLING CAPACITIES (cont)
549B072 (6 Tons)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
1800/0.06
2100/0.066
2400/0.071
3000/0.088
Indoor Entering Air — Ewb (F)
72
67
62
57
72
67
62
57
72
67
62
57
72
67
62
57
75
TC
83.2
77.6 71.6 67.9
84.7
79.8 73.6
71.5
85.9 81.0
75.0 74.3 88.4
82.9 78.4 78.3
SHC 39.7
50.4 60.6 66.6
41.6
54.3 65.9
70.1
43.4 57.6
70.6 72.8 47.2
63.9 76.9 76.8
kW
4.90
4.78 4.69 4.63
4.94
4.84 4.71
4.69
4.97 4.86
4.74 4.73 5.04
4.91 4.81 4.81
85
TC
81.5
75.5 69.0 64.8
83.2
77.3 71.1
69.4
84.5 78.5
72.7 72.2 86.2
80.8 76.5 76.5
SHC 39.2
49.8 59.6 63.6
41.4
53.5 65.0
68.0
43.3 56.9
69.7 70.8 47.1
64.1 75.0 75.0
kW
5.45
5.34 5.23 5.16
5.49
5.36 5.27
5.23
5.52 5.38
5.29 5.27 5.57
5.45 5.36 5.36
95
TC
78.8
72.5 64.1 61.8
80.9
74.5 67.0
66.1
82.0 76.0
69.9 69.9 83.7
78.1 74.2 74.1
SHC 38.4
48.6 57.4 60.6
40.8
52.6 63.2
64.8
42.8 56.4
68.3 68.5 46.8
63.7 72.7 72.7
kW
6.03
5.91 5.79 5.73
6.09
5.96 5.84
5.82
6.11
6.00
5.89 5.89 6.16
6.05 5.96 5.96
105
TC
76.2
69.5 58.6 57.8
77.9
71.3 63.4
63.1
79.3 72.7
67.2 67.2 81.1
74.5 71.3 71.2
SHC 37.6
47.4 55.0 56.6
39.9
51.4 61.4
61.9
42.2 55.3
65.9 65.9 46.5
62.5 69.9 69.9
kW
6.69
6.56 6.40 6.38
6.73
6.61 6.45
6.44
6.77 6.64
6.51 6.51 6.82
6.67 6.57 6.57
115
TC
72.5
65.1 54.8 54.7
74.3
67.8 58.6
58.6
75.6 69.1
63.2 63.2 77.3
70.9 68.4 68.4
SHC 36.3
45.8 53.2 53.6
38.7
50.2 57.4
57.5
41.1 54.0
62.0 62.0 45.5
61.3 67.1 67.1
kW
7.37
7.24 7.08 7.07
7.43
7.30 7.16
7.16
7.48 7.34
7.21 7.21 7.52
7.38 7.32 7.32
549B090 (7
1
/
2
Tons)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
2250/0.12
3000/0.15
3750/0.18
Indoor Entering Air — Ewb (F)
72
67
62
72
67
62
72
67
62
75
TC
97.6
92.5
84.3
100.8
95.6
89.9
101.6
97.8
91.7
SHC
47.7
61.0
72.7
51.5
67.3
83.8
55.0
74.4
89.7
kW
5.80
5.76
5.73
5.86
5.78
5.78
5.86
5.82
5.73
85
TC
97.2
89.9
79.8
100.0
94.1
86.7
102.4
96.0
89.9
SHC
48.1
60.2
70.5
51.7
68.1
82.4
55.8
74.1
89.3
kW
6.61
6.50
6.43
6.65
6.56
6.62
6.69
6.58
6.50
95
TC
94.4
86.9
75.0
98.2
91.3
81.8
99.6
93.7
87.3
SHC
47.3
59.2
68.1
51.7
67.5
79.8
55.0
74.8
87.3
kW
7.43
7.37
7.19
7.50
7.41
7.30
7.50
7.43
7.35
105
TC
91.7
82.2
70.7
94.8
87.3
76.6
97.0
90.1
83.4
SHC
46.3
57.4
65.9
50.9
66.3
76.4
54.8
74.1
83.4
kW
8.37
8.22
8.04
8.39
8.33
8.15
8.44
8.35
8.26
115
TC
87.7
77.4
66.9
91.7
81.6
72.5
93.9
85.3
78.8
SHC
44.9
55.4
64.0
50.3
64.2
72.5
55.0
72.5
78.6
kW
9.33
9.16
8.98
9.44
9.27
9.11
9.48
9.33
9.22
125
TC
83.6
73.3
66.7
87.1
76.0
69.1
89.5
79.0
74.4
SHC
43.6
53.9
63.8
48.7
62.0
69.1
53.7
70.1
74.4
kW
10.38
10.16
9.94
10.49
10.27
10.14
10.53
10.36
10.25
549B102 (8
1
/
2
Tons)
Temp (F)
Outdoor
Entering Air
(Edb)
Indoor Entering Air — Cfm/BF
2550/0.03
3400/0.04
4250/0.05
Indoor Entering Air — Ewb (F)
72
67
62
72
67
62
72
67
62
75
TC
116.4
105.6
94.8
118.9
110.4
99.4
120.4
112.9
104.3
SHC
55.7
69.2
82.0
58.6
79.7
95.8
61.6
89.2
104.2
kW
6.01
5.89
5.8
6.04
5.97
5.87
6.07
6.01
5.93
85
TC
117.6
102.1
91.1
121.0
106.7
95.6
117.5
109.3
101.3
SHC
58.4
67.9
80.4
64.1
78.6
93.9
61.0
88.4
101.2
kW
6.47
6.72
6.61
6.52
6.80
6.69
6.91
6.85
6.77
95
TC
113.7
98.0
86.1
117.4
102.3
91.3
113.4
104.7
97.9
SHC
57.4
66.5
78.2
63.5
77.2
91.1
59.9
87.2
97.8
kW
7.34
7.63
7.49
7.40
7.72
7.60
7.82
7.77
7.69
105
TC
109.8
93.0
78.7
113.2
97.3
85.9
108.9
99.9
93.7
SHC
56.2
64.6
75.0
62.4
75.5
85.9
58.7
85.5
93.6
kW
8.28
8.59
8.42
8.36
8.71
8.57
8.81
8.74
8.68
115
TC
100.2
86.4
72.7
104.5
90.0
80.8
106.0
93.2
88.0
SHC
50.4
62.1
71.9
57.2
73.0
80.8
63.4
83.2
88.0
kW
9.79
9.60
9.40
9.91
9.71
9.59
9.95
9.79
9.71
125
TC
94.0
76.6
63.1
98.8
80.1
68.1
101.0
84.4
75.1
SHC
48.3
58.5
63.1
55.4
69.2
68.1
61.9
79.8
75.1
kW
10.91
10.65
10.45
11.03
10.78
10.61
11.1
10.86
10.73
Standard Ratings
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not
extrapolate.
2. The following formulas may be used:
Where: h
ewb
= Enthalpy of air entering
evaporator coil
3. The SHC is based on 80 F edb temperature
of air entering evaporator 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).
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x
(edb – 80).
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 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
BYPASS
FACTOR
(BF)
ENTERING AIR
DRY-BULB TEMP (F)
79
78
77
76
75
under
75
81
82
83
84
85
over
85
Correction Factor
.05
1.04 2.07 3.11 4.14 5.18
Use
formula
shown
below.
.10
.98 1.96 2.94 3.92 4.90
.20
.87 1.74 2.62 3.49 4.36
.30
.76 1.53 2.29 3.05 3.82
549
B, 5
49C