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13. Appendix
1. Modified coefficient table of ambient condition power
The conditions of generator rated output:
Altitude: 0 m Ambient temperature: 25℃ Relative humidity: 30%
Ambient modified coefficient: C (Relative humidity 30%)
Ambient temperature (℃)
Altitude
(m)
25 30 35 40 45
0 1 0.98 0.96 0.93 0.90
500 0.93 0.91 0.89 0.87 0.84
1000 0.87 0.85 0.82 0.80 0.78
2000 0.75 0.73 0.71 0.69 0.66
3000 0.64 0.62 0.6 0.58 0.56
4000 0.54 0.52 0.5 0.48 0.46
Note: When the relative humidity is 60%, the modified coefficient is C-0.01
When the relative humidity is 80%, the modified coefficient is C-0.02
When the relative humidity is 90%, the modified coefficient is C-0.03
When the relative humidity is 100%, the modified coefficient is C-0.04
Counting example:
When the rated power of generator is PN =5KW, altitude is 1000m, ambient
temperature is 35℃, relative humidity is 80%, the rated power of generator is:
P=Pn×(C-0.02) = 5 × (0.82-0.02) = 4KW
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