PERFORMANCE DATA (cont)
COOLING CAPACITIES (cont)
579F240 (20 TONS)
Temp (F) |
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| Air Entering Evaporator Ð Cfm/BF |
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Air Entering |
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| 6000/0.06 |
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| 7000/0.07 |
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| 8000/0.08 |
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| 9000/0.09 |
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| 10,000/0.10 | |||||||||||||||||||||
Condenser |
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| Air Entering Evaporator Ð Ewb (F) |
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(Edb) |
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72 |
| 67 |
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| 62 |
| 72 |
| 67 |
| 62 | 72 |
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| 67 |
| 62 |
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| 72 |
| 67 |
| 62 |
| 72 |
| 67 |
| 62 | |||||||||||
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75 |
| TC | 274.0 |
| 250.0 |
| 226.0 |
| 280.0 |
| 256.0 |
| 232.0 | 284.0 |
| 260.0 | 236.0 |
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| 288.0 |
| 264.0 |
| 242.0 |
| 292.0 |
| 268.0 | 246.0 | ||||||||||||
| SHC | 130.4 |
| 163.6 |
| 194.4 |
| 136.4 |
| 175.0 |
| 210.0 | 144.4 |
| 186.8 | 224.0 |
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| 151.8 |
| 197.0 |
| 236.0 |
| 157.4 |
| 208.0 | 246.0 | |||||||||||||
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| kW | 16.92 |
| 16.40 |
| 15.90 |
| 17.04 |
| 16.58 |
| 16.12 | 17.22 |
| 16.72 | 16.22 |
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| 17.32 |
| 16.84 |
| 16.36 |
| 17.42 |
| 16.92 | 16.50 | ||||||||||||
85 |
| TC | 264.0 |
| 240.0 |
| 216.0 |
| 270.0 |
| 244.0 |
| 222.0 | 276.0 |
| 250.0 | 226.0 |
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| 278.0 |
| 254.0 |
| 232.0 |
| 282.0 |
| 256.0 | 238.0 | ||||||||||||
| SHC | 127.6 |
| 159.8 |
| 189.8 |
| 138.2 |
| 172.2 |
| 206.0 | 141.8 |
| 183.4 | 220.0 |
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| 147.8 |
| 194.6 |
| 232.0 |
| 154.6 |
| 204.0 | 236.0 | |||||||||||||
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| kW | 18.54 |
| 18.00 |
| 17.36 |
| 18.72 |
| 18.18 |
| 17.60 | 18.96 |
| 18.34 | 17.74 |
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| 19.04 |
| 18.46 |
| 17.94 |
| 19.14 |
| 18.56 | 18.08 | ||||||||||||
95 |
| TC | 252.0 |
| 228.0 |
| 204.0 |
| 258.0 |
| 234.0 |
| 210.0 | 262.0 |
| 238.0 | 216.0 |
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| 266.0 |
| 240.0 |
| 222.0 |
| 270.0 |
| 242.0 | 228.0 | ||||||||||||
| SHC | 124.4 |
| 155.4 |
| 184.6 |
| 131.0 |
| 167.6 |
| 200.0 | 138.8 |
| 178.8 | 214.0 |
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| 145.2 |
| 189.8 |
| 222.0 |
| 151.8 |
| 200.0 | 228.0 | |||||||||||||
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| kW | 20.20 |
| 19.52 |
| 18.82 |
| 20.40 |
| 19.76 |
| 19.08 | 20.60 |
| 19.90 | 19.28 |
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| 20.80 |
| 20.00 |
| 19.52 |
| 20.80 |
| 20.20 | 19.76 | ||||||||||||
105 |
| TC | 240.0 |
| 216.0 |
| 190.6 |
| 246.0 |
| 222.0 |
| 196.6 | 250.0 |
| 226.0 | 204.0 |
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| 252.0 |
| 228.0 |
| 212.0 |
| 256.0 |
| 230.0 | 218.0 | ||||||||||||
| SHC | 120.0 |
| 150.8 |
| 178.4 |
| 127.2 |
| 163.6 |
| 193.8 | 135.0 |
| 175.2 | 204.0 |
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| 141.6 |
| 185.4 |
| 212.0 |
| 147.4 |
| 196.2 | 218.0 | |||||||||||||
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| kW | 21.80 |
| 21.00 |
| 20.20 |
| 22.00 |
| 21.20 |
| 20.60 | 22.20 |
| 21.40 | 20.80 |
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| 22.40 |
| 21.60 |
| 21.00 |
| 22.40 |
| 21.60 | 21.40 | ||||||||||||
115 |
| TC | 228.0 |
| 204.0 |
| 176.6 |
| 232.0 |
| 208.0 |
| 184.6 | 236.0 |
| 212.0 | 194.2 |
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| 238.0 |
| 214.0 |
| 202.0 |
| 240.0 |
| 216.0 | 208.0 | ||||||||||||
| SHC | 116.0 |
| 146.2 |
| 171.8 |
| 123.8 |
| 158.4 |
| 184.6 | 130.4 |
| 169.6 | 194.2 |
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| 137.2 |
| 180.8 |
| 202.0 |
| 144.0 |
| 190.8 | 206.0 | |||||||||||||
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| kW | 23.40 |
| 22.40 |
| 21.60 |
| 23.60 |
| 22.60 |
| 22.00 | 23.80 |
| 22.80 | 22.40 |
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| 23.80 |
| 23.00 |
| 22.60 |
| 24.00 |
| 23.20 | 22.80 | ||||||||||||
125 |
| TC | 214.0 |
| 188.8 |
| 163.2 |
| 218.0 |
| 194.2 |
| 174.2 | 220.0 |
| 197.6 | 183.4 |
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| 224.0 |
| 199.8 |
| 190.6 |
| 226.0 |
| 202.0 | 196.0 | ||||||||||||
| SHC | 111.0 |
| 140.8 |
| 162.8 |
| 118.6 |
| 153.4 |
| 174.2 | 125.8 |
| 164.8 | 183.4 |
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| 132.0 |
| 175.6 |
| 190.4 |
| 139.0 |
| 185.2 | 195.4 | |||||||||||||
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| kW | 24.80 |
| 23.80 |
| 23.00 |
| 25.00 |
| 24.00 |
| 23.40 | 25.20 |
| 24.20 | 23.80 |
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| 25.40 |
| 24.40 |
| 24.00 |
| 25.40 |
| 24.60 | 24.40 | ||||||||||||
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579F300 (25 TONS) |
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Temp (F) |
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| Air Entering Evaporator Ð Cfm/BF |
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Air Entering |
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| 7000/0.03 |
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| 8750/0.05 |
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| 10,000/0.07 |
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| 11,250/0.09 |
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Condenser |
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| Air Entering Evaporator Ð Ewb (F) |
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| (Edb) |
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| 72 |
| 67 |
| 62 |
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| 72 |
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| 67 |
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| 72 |
| 67 |
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| 72 |
| 67 |
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75 |
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| TC |
| 323.9 |
| 299.4 |
| 275.8 |
| 331.3 |
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| 312.7 |
| 288.4 |
| 336.1 |
| 319.8 |
| 294.7 |
| 342.6 |
| 322.5 |
| 300.0 | |||||||||||||
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| SHC |
| 159.4 |
| 195.2 |
| 230.6 |
| 170.1 |
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| 216.5 |
| 259.1 |
| 177.6 |
| 231.1 |
| 276.8 |
| 186.6 |
| 242.9 |
| 292.6 | ||||||||||||||
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| kW |
| 21.10 |
| 20.50 |
| 19.90 |
| 21.30 |
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| 20.90 |
| 20.20 |
| 21.50 |
| 21.10 |
| 20.40 |
| 21.70 |
| 21.20 |
| 20.50 | |||||||||||||
85 |
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| TC |
| 315.3 |
| 290.4 |
| 264.3 |
| 326.9 |
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| 303.2 |
| 278.0 |
| 333.7 |
| 309.1 |
| 285.0 |
| 335.1 |
| 314.2 |
| 291.1 | |||||||||||||
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| SHC |
| 156.3 |
| 191.7 |
| 224.9 |
| 168.4 |
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| 213.2 |
| 254.9 |
| 177.5 |
| 226.9 |
| 273.8 |
| 184.4 |
| 240.7 |
| 288.4 | ||||||||||||||
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| kW |
| 22.70 |
| 22.10 |
| 21.30 |
| 23.10 |
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| 22.50 |
| 21.80 |
| 23.30 |
| 22.70 |
| 22.00 |
| 23.30 |
| 22.80 |
| 22.20 | |||||||||||||
95 |
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| TC |
| 304.1 |
| 277.4 |
| 243.1 |
| 315.3 |
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| 290.1 |
| 263.8 |
| 320.4 |
| 295.6 |
| 271.1 |
| 324.1 |
| 300.6 |
| 279.4 | |||||||||||||
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| SHC |
| 152.0 |
| 186.5 |
| 215.2 |
| 165.0 |
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| 208.5 |
| 248.0 |
| 173.0 |
| 222.4 |
| 266.4 |
| 181.6 |
| 236.5 |
| 279.4 | ||||||||||||||
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| kW |
| 24.80 |
| 24.00 |
| 23.20 |
| 25.20 |
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| 24.50 |
| 23.50 |
| 25.40 |
| 24.60 |
| 23.80 |
| 25.50 |
| 24.80 |
| 24.10 | |||||||||||||
105 |
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| TC |
| 291.2 |
| 261.4 |
| 224.8 |
| 300.9 |
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| 274.2 |
| 242.1 |
| 305.7 |
| 280.3 |
| 252.3 |
| 309.8 |
| 284.8 |
| 266.3 | |||||||||||||
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| SHC |
| 147.2 |
| 179.7 |
| 206.6 |
| 159.9 |
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| 201.8 |
| 237.3 |
| 168.3 |
| 216.8 |
| 252.3 |
| 176.8 |
| 231.1 |
| 266.3 | ||||||||||||||
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| kW |
| 26.90 |
| 25.80 |
| 25.00 |
| 27.20 |
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| 26.30 |
| 25.40 |
| 27.40 |
| 26.60 |
| 25.80 |
| 27.60 |
| 26.80 |
| 26.00 | |||||||||||||
115 |
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| TC |
| 274.6 |
| 237.9 |
| 207.6 |
| 285.9 |
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| 251.5 |
| 222.6 |
| 291.3 |
| 258.4 |
| 237.7 |
| 293.9 |
| 267.5 |
| 247.1 | |||||||||||||
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| SHC |
| 140.9 |
| 170.0 |
| 198.6 |
| 154.9 |
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| 193.2 |
| 222.6 |
| 164.1 |
| 208.7 |
| 237.7 |
| 163.0 |
| 224.3 |
| 247.1 | ||||||||||||||
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| kW |
| 28.80 |
| 27.80 |
| 26.80 |
| 29.40 |
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| 28.20 |
| 27.40 |
| 29.60 |
| 28.50 |
| 27.70 |
| 29.70 |
| 28.50 |
| 28.10 | |||||||||||||
125 |
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| TC |
| 254.5 |
| 214.9 |
| 184.3 |
| 266.7 |
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| 230.9 |
| 206.7 |
| 272.0 |
| 236.0 |
| 220.8 |
| 276.1 |
| 240.0 |
| 231.1 | |||||||||||||
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| SHC |
| 133.3 |
| 160.8 |
| 184.3 |
| 148.0 |
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| 185.1 |
| 206.7 |
| 157.5 |
| 200.2 |
| 220.8 |
| 166.6 |
| 214.4 |
| 231.1 | ||||||||||||||
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| kW |
| 30.90 |
| 29.90 |
| 28.90 |
| 31.40 |
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| 30.20 |
| 29.60 |
| 31.70 |
| 30.50 |
| 29.90 |
| 31.90 |
| 30.80 |
| 30.30 |
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| Standard Ratings |
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| LEGEND |
BF | Ð Bypass Factor | |
Edb | Ð Entering | |
Ewb | Ð Entering | |
kW | Ð Compressor Motor Power Input | |
Ldb | Ð Leaving | |
Lwb | Ð Leaving | |
SHC Ð Sensible Heat Capacity (1000 Btuh) Gross | ||
TC | Ð Total Capacity (1000 Btuh) Gross |
NOTES:
1.Direct interpolation is permissible. Do not extrapolate.
2.The following formulas may be used:
tldb | = | tedb − |
| sensible capacity (Btuh) | ||||
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| 1.10 x cfm |
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tlwb | = | |||||||
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| ing evaporator coil (hlwb) | ||||||
hlwb = hewb | − | total capacity (Btuh) | ||||||
4.5 x cfm |
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Where: hewb = 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.
BYPASS |
| ENTERING AIR | |||||
79 | 78 | 77 | 76 | 75 | under 75 | ||
FACTOR | |||||||
81 | 82 | 83 | 84 | 85 | over 85 | ||
(BF) | |||||||
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| Correction Factor |
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.05 | 1.04 | 2.07 | 3.11 | 4.14 | 5.18 |
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.10 | .98 | 1.96 | 2.94 | 3.92 | 4.90 | Use formula | |
.20 | .87 | 1.74 | 2.62 | 3.49 | 4.36 | shown below. | |
.30 | .76 | 1.53 | 2.29 | 3.05 | 3.82 |
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Interpolation is permissible.
Correction Factor = 1.10 x (1 − BF) x (edb − 80).
30