Bryant DURAPAC 551B - Manual (Page 121)

121
PERFORMANCE DATA (cont)
COOLING CAPACITIES (cont)
LEGEND
NOTES:
1. Direct interpolation is permissible. Do not extrapolate.
2. The following formulas may be used:
Where: hewb = 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.
Interpolation is permissible.
Correction Factor = 1.10 x (1 – BF) x (edb – 80).
559F180 (15 TONS) — UNITS WITH PERFECT HUMIDITY™ OPTION
Temp (F)
Air Entering
Condenser
(Edb)
Evaporator Air Quantity — Cfm/BF
4500/0.12 5250/0.14 6000/0.15 6750/0.18 7500/0.18
Evaporator Air — Ewb (F)
62 67 72 62 67 72 62 67 72 62 67 72 62 67 72
75
TC — 183 202 — 185 207 — 190 211 — 196 216 181 198 218
SHC — 106 82 — 114 87 — 122 92 — 129 96 169 138 100
kW — 14.0 14.6 — 14.4 14.8 — 14.6 14.9 — 14.5 15.0 14.1 14.6 15.1
85
TC — 174 192 — 178 196 — 182 200 171 187 204 173 189 207
SHC — 98 74 — 106 78 — 113 82 151 120 86 158 127 91
kW — 15.2 15.8 — 15.2 15.9 — 15.4 15.9 15.2 15.8 16.0 15.2 15.8 16.3
95
TC — 164 181 — 168 185 — 171 190 160 174 192 160 178 194
SHC — 90 65 — 98 69 — 104 73 142 111 77 150 118 80
kW — 16.2 16.7 — 16.4 16.8 — 16.4 17.0 16.1 16.3 17.1 16.1 16.7 17.1
105
TC — 153 168 — 158 174 — 161 177 148 163 179 151 165 181
SHC — 82 56 — 89 60 — 96 64 131 102 67 141 108 71
kW — 17.2 17.8 — 17.4 18.1 — 17.5 18.1 17.2 17.6 18.0 17.2 17.6 18.3
115
TC — 142 156 — 145 161 — 148 163 137 150 166 139 152 167
SHC — 73 47 — 79 50 — 85 54 122 91 57 130 97 60
kW — 18.3 18.8 — 18.6 19.0 — 18.7 19.1 18.2 18.8 19.3 18.4 18.9 19.4
118
TC — 138 152 — 142 156 — 144 159 133 146 161 135 148 163
SHC — 70 44 — 76 47 — 82 50 119 87 53 126 93 56
kW — 18.7 19.2 — 18.8 19.4 — 19.0 19.5 18.6 19.0 19.7 18.6 19.2 19.7
120
TC — 136 150 — 140 — — 142 — 131 144 — 133 146 160
SHC — 68 42 — 74 — — 80 — 117 85 — 124 91 54
kW — 18.9 19.3 — 19.0 — — 19.1 — 18.6 19.2 — 18.8 19.3 19.8
125
TC — — — — — — — — — — — — — — 152
SHC — — — — — — — — — — — — — — 48
kW — — — — — — — — — — — — — — 20.3
559F216 (18 TONS) — UNITS WITH PERFECT HUMIDITY OPTION
Temp (F)
Air Entering
Condenser
(Edb)
Evaporator Air Quantity — Cfm/BF
5400/0.095 6000/0.105 7000/0.12 8000/0.14 9000/0.15
Evaporator Air — Ewb (F)
62 67 72 62 67 72 62 67 72 62 67 72 62 67 72
75
TC — 201 221 — 204 226 — 210 231 — 213 235 196 215 237
SHC — 120 92 — 126 96 — 137 102 — 147 108 196 157 114
kW — 14.7 15.3 — 14.8 15.5 — 15.0 15.7 — 15.2 15.8 14.8 15.3 15.9
85
TC — 191 212 — 195 215 — 200 221 — 203 224 186 205 227
SHC — 112 83 — 118 87 — 129 94 — 138 100 186 148 105
kW — 16.3 16.6 — 16.4 17.2 — 16.6 17.4 — 16.8 17.1 15.8 16.6 17.4
95
TC — 180 201 — 183 202 — 187 208 — 191 210 175 193 212
SHC — 103 74 — 109 78 — 119 84 — 129 89 175 138 95
kW — 16.8 17.8 — 16.9 17.4 — 17.1 17.8 — 17.3 18.0 16.9 17.4 17.8
105
TC — 169 186 — 171 190 — 175 193 161 177 197 164 180 200
SHC — 94 65 — 100 68 — 109 74 155 119 80 164 127 85
kW — 18.1 18.5 — 18.2 18.7 — 18.3 19.0 17.8 18.3 19.0 17.9 18.5 19.4
115
TC — 156 174 — 159 176 — 163 179 149 165 182 153 166 185
SHC — 84 55 — 90 58 — 99 63 146 108 69 152 117 74
kW — 19.1 19.6 — 19.2 19.8 — 19.5 20.0 18.9 19.7 20.1 19.1 19.6 20.2
117
TC — 154 171 — 156 174 — 159 177 146 162 179 150 163 181
SHC — 82 53 — 88 56 — 97 61 143 106 66 150 115 71
kW — 19.3 20.0 — 19.4 20.1 — 19.6 20.3 19.2 19.7 20.4 19.4 19.9 20.5
120
TC — 150 — — 152 — — 155 — 143 157 — 146 159 —
SHC — 79 — — 84 — — 94 — 140 102 — 146 111 —
kW — 19.7 — — 19.8 — — 19.9 — 19.6 20.0 — 19.7 20.1 —
125
TC — — — — — — — — — — — — — — —
SHC — — — — — — — — — — — — — — —
kW — — — — — — — — — — — — — — —
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
tldb = tedb –
sensible capacity (Btuh)
1.10 x cfm
tlwb =
Wet-bulb temperature corresponding to enthalpy of air
leaving evaporator coil (hlwb)
hlwb = hewb –
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
0
T
F
Q
0
04
-0
12
55
9F1
80-
30
0