A startup company is selling a new compressor claimed to have an isentropic efficiency of 90% when compressing refrigerant R-134a from saturated vapor at 0.8 MPa to 1.4 MPa. The compressor is said to be adiabatically insulated, requiring a work input of only 9.5 KJ per unit mass of refrigerant flowing. Verify that the specs of the compressor are possible.

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature