Bryant 581C User Manual
Page 152
152
PERFORMANCE DATA — 581C
COOLING CAPACITIES — 581C024-060 STANDARD UNITS (cont)
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 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).
581C048 (4 Tons)
Temp (F)
Air Entering Evaporator -- CFM/BF
Air Ent
1200/0.05
1600/0.07
2000/0.09
Condenser
Air Entering Evaporator -- Ewb (F)
(Edb)
62
67
72
62
67
72
62
67
72
75
TCG
46.3
51.1
55.7
48.8
53.5
58
50.7
54.9
59.1
SHG
39.9
33.8
27.1
46.3
38.6
29.8
50.6
42.7
32
CMP
2.36
2.37
2.38
2.37
2.38
2.39
2.37
2.38
2.39
85
TCG
42.9
49
54
46.2
51.5
56.4
49.2
52.8
57.4
SHG
38.5
33
26.6
45.2
37.9
29.4
49.1
42.2
31.7
CMP
2.69
2.71
2.72
2.71
2.72
2.74
2.72
2.72
2.74
95
TCG
38.7
45.8
51.9
42.6
48.8
54.2
46.8
50.4
55.5
SHG
36.5
31.8
25.9
42.5
37.1
28.9
46.8
41.6
31.4
CMP
3.05
3.08
3.11
3.07
3.1
3.12
3.1
3.11
3.12
105
TCG
34.4
41.1
49.1
39
43.8
51.5
43.3
46.3
52.8
SHG
34.3
30
24.9
39
35.3
28.2
43.3
40.4
30.9
CMP
3.42
3.48
3.53
3.47
3.5
3.54
3.5
3.52
3.54
115
TCG
31.4
36.3
44.7
35.8
38.4
47.3
39.2
40.6
49.5
SHG
31.4
28.1
23.5
35.8
33.3
26.9
39.2
38.1
30.1
CMP
3.85
3.9
3.96
3.9
3.92
3.98
3.93
3.94
4
125
TCG
28.2
31.1
39.8
31.9
33
41.6
35.3
35.4
43.9
SHG
28.1
26.2
21.8
31.9
31.1
25.1
35.3
35.4
28.4
CMP
4.31
4.35
4.42
4.36
4.37
4.44
4.4
4.4
4.46
581C060 (5 Tons)
Temp (F)
Indoor Entering Air -- CFM/BF
Outdoor
1500/0.26
1750/.31
2000/.35
2500/.45
Air Ent
Indoor Entering Air -- Ewb (F)
(Edb)
57
62
67
72
57
62
67
72
57
62
67
72
57
62
67
72
75
TCG
57
60.2
66.5
72
60.3
62.3
68.5
73.8
63.2
64.1
69.7
75.6
67.4
67.4
71.8
77.6
SHG 55.3
50.5
42.4
33.5
58.6
55.2
45.7
35.4
61.3
59.5
48.6
37.4
65.5
65.5
54.4
40.7
CMP
3.1
3.11
3.12
3.14
3.11
3.12
3.13
3.15
3.11
3.12
3.13
3.16
3.12
3.12
3.14
3.17
85
TCG 54.1
56.9
64
70.2
58.3
59.7
65.9
72
60.9
61.4
67.3
73.4
65.3
65.2
69.6
75.3
SHG 52.6
49.1
41.4
33
56.6
54.1
44.8
35
59.2
58.4
48
36.9
63.4
63.4
54.4
40.4
CMP
3.5
3.52
3.54
3.56
3.52
3.53
3.54
3.57
3.53
3.54
3.54
3.58
3.54
3.54
3.56
3.59
95
TCG 50.2
53
61.1
67.5
55
55.6
62.9
69.3
58.6
58.6
64.3
70.6
62.8
62.8
66.4
72.7
SHG 48.8
47.4
40.3
32.2
53.4
52.3
43.8
34.2
56.9
56.8
47.2
36.1
61
61
53.4
40
CMP 3.94
3.95
3.99
4.02
3.97
3.97
4.01
4.03
3.99
3.99
4.02
4.03
4.01
4.01
4.02
4.05
105
TCG 47.4
47.9
56.5
64.3
50.9
51
59.5
66.1
54.7
54.8
60.9
67.4
59.9
60
62.9
69
SHG
46
45.2
38.7
31.1
49.5
49.5
42.6
33.2
53.1
53.2
45.9
35.2
58.2
58.3
52.4
38.8
CMP 4.42
4.42
4.48
4.51
4.44
4.44
4.5
4.53
4.47
4.47
4.51
4.54
4.5
4.5
4.52
4.54
115
TCG 43.1
43.2
50.3
60.8
47.3
47.3
52.6
62.6
50.1
50.1
55.6
63.9
56
55.9
58.2
65.4
SHG 41.8
42
36.4
30
45.9
45.9
40.2
32.1
48.7
48.7
44.1
34.2
54.4
54.3
50.8
37.9
CMP 4.92
4.92
4.98
5.05
4.96
4.96
5
5.07
4.98
4.98
5.02
5.08
5.03
5.03
5.05
5.08
125
TCG
39
39
43.9
55.7
42.3
42.3
46.9
58.5
46.1
46.1
48.2
59.7
50.9
50.9
51.3
61.4
SHG 37.9
37.9
34.1
28.3
41.1
41
38.2
30.8
44.8
44.8
41.6
32.9
49.4
49.4
48.2
36.9
CMP 5.47
5.46
5.52
5.62
5.51
5.51
5.55
5.64
5.54
5.54
5.56
5.66
5.59
5.59
5.59
5.66
BF
— Bypass Factor
Edb
— Entering Dry Bulb
Ewb
— Entering Wet Bulb
COMP — Compressor Power kw
SHG
— Gross Sensible Capacity (1000 Btuh)
TCG
— Compressor Cooling Capicity (1000 Btuh)
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
58
1C02
4-
060