压气机效率计算公式
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h2s = enthalpy at isentropic point 2 h2 = enthalpy at actual point 2 h1 = enthalpy at point 1 P1 = absolute pressure at point 1
P2 = absolute pressure at point2 T2S = abs. Temp at isentropic point 2 T2 = absolute temp at point 2 T1 = absolute temp at point 1
AFPAP AFQ IN LB/S
29.8 1274.5
CMHUM CPD #H/#A PSI
0.016 206.1
CSGV DGA
86
CTD DEG
780
CTIM DEG
86
DWATT FQG MW LB/S
361.4 32.37
FSR2 %
76.97
TNH %
99.98
TTXM DEG
1153
First approximation, not compensated for moisture Let (P2/P1)^((k-1)/k) = T2s/T1 Definition of Brayton Cycle compressor efficiency, Nc = (h2s-h1)/(h2-h1) = (T2s-T1)/(T2-T1) Let k = 1.4 (ratio of specific heats) (k-1)/k = 0.285714286
13-Mar-05 20-Mar-05 1-Apr-05 9-Apr-05 10-Apr-05 12-Apr-05 13-Apr-05 22-Apr-05 23-Apr-05
at isentropic point 2
Date 17-Sep-04 20-Sep-04 22-Sep-04 30-Sep-04 26-Oct-04 29-Dec-04 21-Feb-05
Time 13:55:40.000
AFPAP inHg
P1 AFPAP psia 29.8 14.63776
P2 CPD CPD psig psia 206.百度文库 220.7378
CTD deg F 780
T2 CTD deg R 1240
CTIM deg F 86
T1 W T2s/T1 T2s Nc CTIM CMHUM compressor deg R #H2O/#air deg R efficiency 546 0.016 2.171132 1185.438 0.921381
Calculate Isentropic efficiency of turbine compressor and find trend over time.
DATE TIME ETIME MM/DD/YY H:MM:SS.### H SECONDS
17-Sep-04 20-Sep-04 22-Sep-04 30-Sep-04 26-Oct-04 25-Nov-04 29-Dec-04 21-Feb-05 13-Mar-05 20-Mar-05 1-Apr-05 9-Apr-05 10-Apr-05 12-Apr-05 13-Apr-05 22-Apr-05 23-Apr-05 13:55:40.000 22463740