Bryant 579F User Manual page 240

581A180 (15 Tons)
Temp (F)
Air Ent
Cond
54 58 62
TC 180.5 184.6 188.7 203.5 219.9 233.7
60 SHC 180.5 172.4 159.4 132.3 104.7
kW 9.41 9.49 9.58
TC 176.7 180.5 184.4
SHC 176.7 169 155.8 129.4 102.4
70
kW 10.5 10.57 10.64 10.96 11.35 11.62 11.95 10.68 10.72 10.76 11.06 11.45 11.72 12.04 10.85 10.87 10.89 11.17 11.55 11.82 12.13
TC 174.7 177.5 181
75 SHC 174.7 167.2 147
kW 11.07 11.14 11.2
TC 169.6 172.2 175
85 SHC 169.6 163.3 145
kW 12.29 12.35 12.3
TC 164.3 166.5 168
95 SHC 164.3 158.9 142
kW 13.59 13.65 13.5
TC 158.1 159.8 161
SHC 158.1 154.2 138
105
kW 14.97 15.02 14.8
TC 151.8 152.8 152
SHC 151.8 149.1 134
115
kW 16.45 16.48 16.1
TC 144.7 145.4 146
125 SHC 144.7 143.5 123.4 102.2 81.16
kW 17.96 18.01 18.05 18.49 18.99 19.44 19.85 18.18 18.22 18.25 18.6
581A180 (15 Tons) (cont)
Temp (F)
Air Ent
Cond
54 58
TC 203.8 204.2
60 SHC 203.8 201.8
kW 9.88 9.88
TC 199.6 199.8
70 SHC 199.6 197.8
kW 10.99 10.99
TC 196.4 196.6
75 SHC 196.4 195.7
kW 11.58 11.58
TC 191 191.1
85 SHC 191 190.5
kW 12.81 12.81
TC 184.4 184.5
SHC 184.4 184.2
95
kW 14.15 14.15
TC 176.7 176.7
SHC 176.7 176.7
105
kW 15.55 15.55
TC 169.5 169.4
115 SHC 169.5 169.4
kW 17.05 17.04
TC 160.9 161.1
125 SHC 160.9 161.1
kW 18.57 18.59
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 (cont)
COOLING CAPACITIES — STANDARD UNITS (cont)
4500/0.01
67 72 76 80 54
247 189.3 191.7 194.2 208.7 224.1
87.9 65.7 189.3 183.2 173.2 142.8 110.4
9.87 10.19 10.47 10.78 9.58
199 215.1 227.8 242 185.3 187.5 189.8
86 63.9 185.3 179.7 169.3 138.9
196 213 224.2 238 182.3 184.4
124 99 84.9 62.9 182.3 177.9
11.6 12 12.23 12.57 11.25
190 205 218.1 230.8 177.2
121 97 82.5 60.7 177.2 174.1
12.7 13.1 13.5 13.86 12.47 12.51 12.5
182 197 209.8 221.2 171.7 172.6
118 93 79.8 57.9 171.7 168.8
13.9 14.3 14.85 15.23 13.8 13.82 13.6
174 188 200.3 212.4 165.2
115 91 76.8 55.2 165.2 163.1
15.2 15.6 16.28 16.69 15.19 15.21 14.9
165 179 190.6 201.3 158.4 158.8
111 87 73.7 52.1 158.4
16.5 16.9 17.79 18.21 16.68 16.68 16.2
157.1 170.5 180.7 191.1 150.8 151.1 151.5 160.2 172.9 183.9
70.4 48.9 150.8 150.2 135.2 109.6 85.15
6750/0.01
62 67 72
204.6 216.3 231.7
191.2 164.1 124.1
9.89 10.13 10.45
200.1 210.5 226.5
187 159.7 121.3
11 11.24 11.6
194 206 220
181 153 120
11.6 11.9 12.2
188 200 213
175 148 115
12.7 13 13.3
181 192 205
170 144 108
13.9 14.2 14.6
173 182 194
162 140 103
15.2 15.5 15.8
166 172 183
155 136 98
16.6 16.8 17.1
161.2 165.6 177.4
150.7 125.6 95.04
18.62 18.81 19.18
Evap Air — Cfm/BF
5250/0.01
Evap Air — Ewb (F)
58 62 67 72 76
238
91
9.63 9.68 9.97 10.29 10.57 10.87 9.75
203 219.2 231.8
108 89.1 63.8
186 201 217 229.2
160 133 105 88
11.3 11.3 11.7 12.1 12.33 12.66 11.45 11.45
179 180 194 209 221.9 233.3 185.6 185.9
157 130 102 85.6
12.8 13.2 13.61 13.96 12.67 12.68 12.6
172 187 201 213.4 224.6 179.1 179.3
154 127 98 82.8
14 14.4 14.96 15.32
166 165 178 191 203.8 214.6 172.3 172.3
150 124 95 79.9
15.3 15.7 16.39 16.77 15.41 15.4
157 168 180 194
157 145 120 91 76.7
16.6 17 17.91 18.3 16.89 16.88 16.4
73.4 48.8 156.8 156.9 145.6 117.4
19.11 19.5 19.89 18.42 18.44 18.46 18.72 19.14 19.65 19.93
Evap Air — Cfm/BF
Evap Air — Ewb (F)
76 80 54 58
244 257 209.5 209.5
97 65.4 209.5 209.5
10.72 11 9.99 9.99
239 250 205.2 205.1
95.2 63.5 205.2 205.1
11.88 12.18 11.12 11.11
235 247 201.9 201.9
94 62.5 201.9 201.9
12.5 12.8 11.71 11.7
227.8 239 196.4 196.4
91.6 60.2 196.4 196.4
13.77 14.1 12.96 12.95
219.1 229.7 189.7 189.7
88.9 57.7 189.7 189.7
15.14 15.47 14.29 14.29
209.2 218.5 181.9 181.9
86 54.9 181.9 181.9
16.57 16.9 15.7 15.7
198.2 207.1 173.9 173.8
82.7 51.8 173.9 173.8
18.08 18.42 17.2 17.2
187.9 195.4 165.1 165.2
79.4 48.7 165.1 165.2
19.68 20.06 18.72 18.75
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
4500 0.396
5250 0.455
6000 0.504
6750 0.544
7500 0.578
240
6000/0.01
80 54 58 62 67
251 198.1 198.8 199.6 212.9 229.3
65.5 198.1 195.1 185.1 153.1 116.7
9.77 9.79 10.07 10.39 10.67 10.95
245 193 194.5 195.1 208.1 224.3
193 191.4 181 149.7 114.2
242 190.9 191.3 189 204
62.8 190.9 189.5 173 143
11.4 11.8
183 198
60.5 185.6 184.7 168 139
12.9
176 190
57.9 179.1 178.7 164 136
14 14 13.8 14.1
169 181
55.1 172.3 172.2 158 132
15.1 15.4
204.5 165 164.9 161 171
52.1 165 164.9 151 128
16.7
192 156.8 156.9 157 163.2 175.4 186.2 193.9
7500/0.02
62 67 72
209.6 218.8 235
196.6 173.7 138.1
9.99 10.19 10.51
205.1 213.8 228.8
192.4 169.8 134.5
11.11 11.31 11.65
198 208 223
186 163 163
11.7 11.9 11.9
192 202 214
180 157 119
12.8 13.1 13.4
185 194 206
174 153 113
14 14.3 14.6
177 184 194
166 148 107
15.3 15.5 15.8
169 174 183
158 142 101
16.7 16.9 17.1
165.4 167.8 179.2
155.2 133.2 105.3
18.78 18.91 19.33
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
0.193 0.054 0.053 0.067
0.272 0.077 0.065 0.077
0.337 0.121 0.077 0.088
0.390 0.193 0.094 0.100
0.436 0.244 0.108 0.114
72 76 80
242 255
94 65.4
237 248
92.2 63.7
219 233.1 246
113 91 62.7
12.1 12.44 12.75
212 225.7 237
106 88.6 60.4
13.3 13.71 14.05
203 217.1 228
102 86 57.8
14.5 15.07 15.43
193 207.3 216.8
98 83 54.9
15.7 16.5 16.86
181 197.3 206.6
94 79.8 51.9
17 18.01 18.39
89.3 76.4 48.7
76 80
248 259
100 65.2
10.78 11.05
241 252
98.2 63.5
11.94 12.22
237 249
97.1 62.5
12.56 12.84
229.8 241
94.6 60.2
13.84 14.13
221.1 230.5
91.9 57.6
15.2 15.51
211.1 220.1
88.9 54.7
16.64 16.94
200 208.6
85.6 51.7
18.15 18.45
188.6 196
82.3 48.6
19.71 20.09
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