For the same pressure rise in a non-ideal compressor which of the following would you expect to happen to the output relative to an isentropic compressionQuestion 1Select one:a.less work will be required to run the compressorb.entropy change across the compressor will be largerc.enthalpy change across the compressor will be smallerd.outlet temperature of the compressor will decrease
Question
For the same pressure rise in a non-ideal compressor which of the following would you expect to happen to the output relative to an isentropic compressionQuestion 1Select one:a.less work will be required to run the compressorb.entropy change across the compressor will be largerc.enthalpy change across the compressor will be smallerd.outlet temperature of the compressor will decrease
Solution
The correct answer is b. entropy change across the compressor will be larger.
Here's why:
In an isentropic process, there is no change in entropy. This is because the process is both adiabatic (no heat transfer into or out of the system) and reversible (no dissipative effects such as friction or unrestrained expansion).
However, in a non-ideal compressor, there are inefficiencies such as friction and heat transfer which cause entropy to increase. This is in accordance with the second law of thermodynamics, which states that the entropy of an isolated system always increases or remains constant; it never
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