Using Energy Concepts and the Ideal Gas Model
One lb of air undergoes a cycle consisting of the following processes:
Process 1–2: Constant-pressure expansion with p = 20 lbf/in.2 from T1 = 500°R to v2 = 1.4 v1.
Process 2–3: Adiabatic compression to v3 = v1 and T3 = 820°R.
Process 3–1: Constant-volume process.
Sketch the cycle on a carefully labeled p–v diagram. Assuming ideal gas behavior, determine the energy transfers by heat and work for each process, in Btu.
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