Bryant 579F User Manual page 239

581A155 (12 Tons)
Temp (F)
Air Ent
Cond
54 58 62
TC 152 156 161
60 SHC 152 144 135
kW 7.56 7.65 7.74
TC 148 152 156
SHC 148 141 133
70
kW 8.5 8.58 8.67
TC 146 150 154
75 SHC 146 139 132
kW 9.02 9.1 9.18
TC 142 145 149
85 SHC 142 136 129
kW 10.1 10.2 10.3
TC 138 141 143
95 SHC 138 133 127
kW 11.4 11.4 11.5
TC 134 136 138
SHC 134 129 124
105
kW 12.7 12.8 12.8
TC 129 130 132
SHC 129 125 121
115
kW 14.2 14.2 14.3
TC 124 125 126
125 SHC 124 121 118
kW 15.8 15.8 15.9
581A155 (12 Tons) (cont)
Temp (F)
Air Ent
Cond
54 58
TC 175 175
60 SHC 175 173
kW 8.03 8.05
TC 170 171
70 SHC 170 169
kW 8.98 8.99
TC 168 168
75 SHC 168 167
kW 9.5 9.51
TC 163 163
85 SHC 163 162
kW 10.6 10.6
TC 158 158
SHC 158 157
95
kW 11.9 11.9
TC 152 152
SHC 152 152
105
kW 13.2 13.2
TC 146 146
115 SHC 146 146
kW 14.7 14.7
TC 140 140
125 SHC 140 140
kW 16.4 16.4
LEGEND
BF — Bypass Factor
Edb — Entering Dry-Bulb
Ewb — Entering Wet-Bulb
kW — Compressor Motor Power Input
ldb — Leaving Dry-Bulb
lwb — Leaving Wet-Bulb
SHC — Sensible Heat Capacity (1000 Btuh) Gross
TC — Total Capacity (1000 Btuh) Gross
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
sensible capacity (Btuh)
t ldb = t edb –
1.10 x cfm
t lwb = Wet-bulb temperature corresponding to enthalpy of air leaving evapo-
rator coil (h lwb )
total capacity (Btuh)
h lwb = h ewb –
4.5 x cfm
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.
PERFORMANCE DATA
COOLING CAPACITIES — STANDARD UNITS
3600/0.01
67 72 76 80 54
174 189 201 213 161
114 92.9 75.4 57.5 161
8.01 8.33 8.6 8.86 7.76
169 183 195 206 157
112 90.6 73.2 55.4 157
8.97 9.26 9.53 9.8 8.7
166 181 192 204 155
111 89.7 72.2 54.6 155
9.45 9.8 10.1 10.4 9.22
161 175 186 196 151
109 87.4 70 52.4 151
10.6 10.9 11.2 11.5 10.3
155 168 179 189 147
106 85 67.7 50.1 147
11.8 12.2 12.4 12.7 11.6
149 162 172 181 141
104 82.4 65.3 47.7 141
13.2 13.5 13.8 14.1 12.9
143 155 164 172 136
101 79.8 62.7 45.1 136
14.6 15 15.3 15.6 14.4
136 147 156 163 131
98.2 77 60.1 42.5 131
16.2 16.6 17 17.2 16.1
5625/0.02
62 67 72
176 187 202
171 142 110
8.07 8.3 8.61
171 181 195
168 140 108
9.01 9.23 9.55
169 179 192
166 139 107
9.52 9.75 10.1
164 172 185
162 136 104
10.6 10.9 11.2
158 166 178
157 134 102
11.9 12.1 12.4
152 159 171
152 131 99.3
13.2 13.4 13.8
146 151 163
146 128 96.6
14.7 14.9 15.3
140 144 155
140 125 93.7
16.4 16.5 16.9
Evap Air — Cfm/BF
4375/0.01
Evap Air — Ewb (F)
58 62 67 72 76
164 167 180 195 207
156 150 125 99.6 78.7
7.82 7.88 8.14 8.46 8.72
160 162 174 189 200
153 148 123 97.3 76.5
8.75 8.81 9.07 9.39 9.66
158 160 172 186 197
151 146 122 96.2 75.5
9.27 9.31 9.58 9.91 10.2
153 154 166 179 190
147 144 119 93.9 73.2
10.4 10.4 10.7 11 11.3
148 149 160 173 183
144 141 117 91.6 70.9
11.6 11.6 11.9 12.3 12.6
142 143 153 166 176
139 137 114 89 68.4
13 13 13.3 13.6 13.9
137 138 146 158 168
135 133 111 86.3 65.9
14.4 14.5 14.7 15.1 15.5
131 132 140 150 159
130 128 109 83.5 63.2
16.1 16.1 16.4 16.7 17.1
Evap Air — Cfm/BF
Evap Air — Ewb (F)
76 80 54 58
214 224 180 180
83.8 57.3 180 180
8.87 9.1 8.14 8.15
207 216 175 176
81.5 55.2 175 176
9.81 10 9.09 9.1
203 213 173 173
80.5 54.4 173 173
10.3 10.6 9.62 9.62
196 205 168 168
78.2 52.2 168 168
11.5 11.7 10.7 10.7
189 196 162 162
75.9 49.8 162 162
12.7 12.9 12 12
181 187 157 157
73.3 47.4 157 157
14.1 14.3 13.4 13.4
172 177 150 150
70.7 44.9 150 150
15.6 15.8 14.9 14.9
163 167 144 144
67.9 42.4 144 144
17.2 17.4 16.5 16.5
BYPASS
FACTOR
(BF)
.05
.10
.20
.30
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
4. Use chart below for bypass factor.
CFM 54
3600 0.355
4375 0.439
5000 0.486
5625 0.525
6250 0.551
239
5000/0.01
80 54 58 62 67
218 169 171 172 184
57.5 169 166 162 134
8.97 7.92 7.95 7.98 8.24
211 165 166 167 179
55.3 165 162 160 132
9.91 8.86 8.89 8.91 9.16
208 163 164 164 176
54.6 163 161 158 131
10.5 9.39 9.41 9.43 9.68
200 158 159 159 170
52.3 158 157 155 128
11.6 10.5 10.5 10.5 10.8
192 153 153 154 164
50 153 153 152 126
12.8 11.8 11.8 11.8 12
184 148 148 148 157
47.5 148 148 148 123
14.2 13.1 13.1 13.1 13.4
175 142 142 142 149
45 142 142 142 120
15.7 14.6 14.6 14.6 14.8
165 136 136 136 142
42.5 136 136 136 117
17.3 16.3 16.2 16.2 16.4
6250/0.02
62 67 72
180 190 204
180 151 115
8.16 8.36 8.66
176 184 198
176 148 113
9.11 9.3 9.61
173 181 195
173 147 112
9.62 9.81 10.1
168 175 188
168 145 109
10.8 10.9 11.2
162 168 180
162 142 107
12 12.1 12.5
157 161 173
157 139 104
13.4 13.5 13.9
150 153 165
150 136 102
14.9 14.9 15.4
144 146 156
144 133 98.7
16.5 16.6 17
ENTERING AIR DRY-BULB TEMP (F)
79 78 77 76 75
81 82 83 84 85
Correction Factor
1.04 2.07 3.11 4.14 5.18
.98 1.96 2.94 3.92 4.90
.87 1.74 2.62 3.49 4.36
.76 1.53 2.29 3.05 3.82
ENTERING WET-BULB (F)
58 62 67 72
Bypass Factor
0.158 0.054 0.038 0.049
0.255 0.112 0.043 0.057
0.314 0.126 0.054 0.037
0.360 0.174 0.066 0.073
0.410 0.202 0.080 0.079
72 76 80
199 211 222
105 81.3 57.4
8.55 8.82 9.06
193 204 214
103 79.1 55.3
9.49 9.76 9.99
189 201 212
101 78.1 54.5
9.99 10.3 10.6
183 194 203
99.1 75.8 52.2
11.1 11.4 11.7
177 187 195
96.9 73.5 49.9
12.4 12.7 12.9
169 179 186
94.3 70.9 47.4
13.7 14 14.3
161 171 177
91.6 68.4 45
15.2 15.6 15.7
153 162 167
88.7 65.7 42.4
16.8 17.2 17.4
76 80
216 226
86.2 57.2
8.93 9.14
209 218
84 55.1
9.87 10.1
206 215
83 54.3
10.4 10.6
198 206
80.6 52.1
11.5 11.8
190 197
78.3 49.7
12.8 13
182 188
75.7 47.4
14.2 14.4
174 178
73.1 44.8
15.7 15.8
164 168
70.2 42.3
17.3 17.4
under 75
over 85
Use formula
shown below.
76 80
0.000 0.000
0.000 0.000
0.000 0.000
0.000 0.000
0.000 0.000