An air-standard dual cycle has a compression ratio of 12 and a cutoff ratio of 1.35. The pressure ratio during the const

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An Air Standard Dual Cycle Has A Compression Ratio Of 12 And A Cutoff Ratio Of 1 35 The Pressure Ratio During The Const 1 (111.68 KiB) Viewed 29 times

An air-standard dual cycle has a compression ratio of 12 and a cutoff ratio of 1.35. The pressure ratio during the constant-volume heat addition process is 1.2 Determine the thermal efficiency, amount of heat added, and the maximum gas pressure and temperature when this cycle is operated at 14 psia and 70°F at the beginning of the compression. Use constant specific heats at room temperature. The properties of air at room temperature are R = 0.3704 psia-ft³/lbm-R, cp=0.240 Btu/lbm R. cy=0.171 Btu/lbm-P. and k The maximum gas pressure is The maximum gas temperature is The amount of heat added is The thermal efficiency is psia. R. Btu/lbm.