Performance data, Gross cooling capacities (mbh) – Bryant CM5A User Manual
Page 5
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PERFORMANCE DATA
GROSS COOLING CAPACITIES (MBH)
BF
— Bypass Factor
CFM
— Cubic Ft per Minute
EWB
— Entering Wet Bulb (
°
F)
SHG
— Gross Sensible Capacity 1000 Btuh
TCG
— Gross Cooling Capacity 1000 Btuh
NOTES:
1. Contact manufacturer for cooling capacities at conditions other than
shown in table.
2. Formulas:
Leaving db = entering db —
Leaving wb = wb corresponding to enthalpy of air leaving coil (h
lwb
)
h
lwb
= h
ewb
—
where h
ewb
= enthalpy of air entering coil.
INDOOR
COIL AIR
SATURATED TEMPERATURE LEAVING EVAPORATOR (
°
F)
30
35
40
45
50
CFM
EWB (
°
F)
TCG
SHG
BF
TCG
SHG
BF
TCG
SHG
BF
TCG
SHG
BF
TCG
SHG
BF
CM5A/CM5B024
600
72
50.4
24.2
0.00
45.8
21.8
0.00
40.9
19.4
0.00
35.3
16.9
0.09
28.8
14.3
0.06
67
41.5
24.8
0.08
37.0
22.4
0.06
32.0
19.9
0.05
26.2
17.3
0.05
19.9
14.7
0.06
62
33.7
25.4
0.05
29.1
22.9
0.05
24.1
20.4
0.06
18.5
17.5
0.08
14.8
14.8
0.19
800
72
61.9
29.4
0.00
56.7
26.8
0.00
50.8
24.1
0.00
44.0
21.1
0.11
36.0
17.9
0.08
67
51.6
30.9
0.10
46.2
28.1
0.08
39.9
25.1
0.07
32.7
22.0
0.07
24.9
18.7
0.08
62
42.1
32.1
0.07
36.4
29.1
0.07
30.1
26.0
0.08
23.2
22.4
0.11
19.0
19.0
0.22
1000
72
71.5
33.8
0.00
65.4
30.9
0.00
58.6
27.8
0.00
51.1
24.7
0.12
42.2
21.2
0.10
67
59.7
36.0
0.12
53.7
33.0
0.10
46.7
29.8
0.09
38.4
26.2
0.09
29.2
22.3
0.10
62
49.2
38.1
0.09
42.7
34.7
0.09
35.4
31.1
0.10
27.6
26.9
0.13
22.9
22.9
0.25
CM5A/CM5B036
1000
72
74.8
35.4
0.00
68.7
32.5
0.00
61.7
29.3
0.00
54.0
26.1
0.11
44.8
22.5
0.09
67
62.6
37.7
0.10
56.4
34.7
0.09
49.2
31.4
0.08
40.8
27.7
0.07
31.3
23.7
0.09
62
51.3
39.7
0.08
44.7
36.3
0.08
37.5
32.7
0.09
29.1
28.3
0.12
23.9
23.9
0.24
1200
72
83.4
39.4
0.00
76.9
36.3
0.00
69.2
33.0
0.19
60.4
29.4
0.12
50.5
25.6
0.10
67
70.1
42.6
0.11
63.1
39.3
0.10
55.3
35.7
0.09
46.2
31.8
0.09
35.7
27.4
0.10
62
57.6
45.4
0.09
50.5
41.8
0.09
42.5
37.8
0.10
33.4
32.8
0.14
27.8
27.8
0.26
1400
72
90.6
42.8
0.00
83.6
39.7
0.00
75.5
36.2
0.17
65.9
32.4
0.13
55.4
28.4
0.12
67
76.3
46.9
0.12
68.9
43.5
0.11
60.3
39.6
0.11
50.8
35.6
0.10
39.6
30.9
0.12
62
62.9
50.5
0.10
55.4
46.7
0.11
46.9
42.5
0.12
37.4
37.1
0.16
31.5
31.5
0.29
CM5A/CM5B042
1000
72
77.4
36.7
0.00
71.5
33.8
0.00
64.7
30.7
0.00
56.8
27.4
0.11
47.8
23.8
0.08
67
65.2
39.2
0.09
59.0
36.1
0.08
51.6
32.7
0.07
43.3
29.0
0.06
33.6
25.0
0.07
62
54.2
41.6
0.07
47.4
38.1
0.07
39.9
34.4
0.07
31.2
29.9
0.09
25.5
25.5
0.21
1200
72
85.9
40.6
0.00
79.8
37.7
0.00
72.1
34.4
0.20
63.3
30.7
0.11
53.6
27.0
0.10
67
72.8
44.2
0.10
65.5
40.7
0.09
57.9
37.2
0.09
48.9
33.3
0.08
38.2
28.8
0.09
62
60.4
47.2
0.08
53.3
43.7
0.08
45.1
39.6
0.09
35.7
34.7
0.11
29.7
29.7
0.23
1400
72
93.1
44.0
0.00
86.6
41.1
0.00
78.5
37.6
0.16
69.1
33.9
0.12
58.5
29.8
0.11
67
79.0
48.5
0.11
71.5
45.0
0.10
63.1
41.2
0.10
53.6
37.2
0.09
42.3
32.5
0.10
62
65.7
52.4
0.09
58.1
48.7
0.10
49.6
44.4
0.10
39.9
39.2
0.13
33.6
33.6
0.25
CM5A/CM5B048
1200
72
86.4
40.9
0.00
79.2
37.4
0.00
71.2
33.8
0.00
62.0
29.9
0.11
51.3
25.7
0.09
67
72.3
43.5
0.11
64.9
39.8
0.09
56.5
35.8
0.08
46.7
31.5
0.07
36.0
27.1
0.09
62
59.6
45.8
0.08
51.5
41.6
0.08
42.7
37.2
0.09
34.2
32.8
0.11
28.6
28.6
0.20
1400
72
94.5
44.6
0.00
86.8
40.9
0.00
77.8
37.0
0.00
68.0
33.0
0.14
56.6
28.5
0.12
67
79.1
47.8
0.13
71.2
44.0
0.12
62.1
39.8
0.11
51.6
35.2
0.10
39.8
30.3
0.11
62
65.1
50.6
0.10
56.9
46.5
0.10
47.4
41.8
0.11
38.3
37.2
0.12
32.4
32.4
0.22
1600
72
101.0
47.6
0.00
93.1
43.9
0.00
83.7
39.9
0.00
73.1
35.6
0.16
61.2
31.0
0.14
67
84.9
51.6
0.15
76.3
47.5
0.14
67.0
43.3
0.13
55.9
38.6
0.12
43.2
33.4
0.13
62
70.0
55.1
0.12
61.5
50.9
0.12
51.5
46.0
0.13
42.4
41.6
0.14
36.0
36.0
0.25
sensible heat cap.
1.09 x CFM
total capacity (Btuh)
4.5 x CFM
3. Direct interpolation is permissible. Do not extrapolate.
4. SHC is based on 80
°
F db temperature of air entering coil.
Below 80
°
F db, subtract (Correction Factor x CFM)
from SHC. Above 80
°
F db, add (Correction Factor x CFM) to SHC
5. All data points are based on 10
°
F superheat leaving coil.
SHC CORRECTION FACTOR
Interpolation is permissible.
Correction Factor = 1.09 x (1 – BF) x (db – 80)
BYPASS
FACTOR
ENTERING AIR DRY-BULB TEMPERATURE (
°
F)
79
78
77
76
75
Under 75
81
82
83
84
85
Over 85
Correction Factor
0.10
0.20
0.30
0.98
0.87
0.76
1.96
1.74
1.53
2.94
2.62
2.29
3.92
3.49
3.05
4.91
4.36
3.82
Use formula
shown below.