Q118
The compressor efficiency is the
A.
Isothermal H.P/indicated H.R
AnswerB.
Isothermal H.P./shaft H.R
C.
Total output/air input
D.
Compression work/motor input
Answer: Option A
Solution
Answer: Option A
Solution:
The compressor efficiency is the Isothermal H.P/indicated H.R
The mechanical efficiency varies with compressor size and type, but 95% is a useful planning number. When calculating the compressor head and discharge temperature the efficiency used will be isentropic or polytropic