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2 - 1 5 . A refrigeration process includes a compressor, as explained in detail in Chapter 5 , because it is necessary to change
A refrigeration process includes a compressor, as explained in detail in Chapter because it is necessary to change the boiling point of the refrigerant, which is done by controlling the pressure. Chapter shows that the work required for compression is well approximated as equal to the change in enthalpy. Use Appendix F to find the change in specific enthalpy for each of the scenarios A through C
A Freon enters the compressor as saturated vapor at bar and exits the compressor at bar and
B Freon enters the compressor as saturated vapor at bar and exists the compressor at bar and
C Freon enters the compressor as saturated vapor at bar and exists the compressor at bar and
D In these three compressors, the inlet and outlet pressures varied considerably, but the "compression ratio" was always What do you notice about the changes in enthalpy for the three cases?
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