A quantity of air undergoes a thermodynamic cycle consisting of three internally reversible processes in series: Process 1-2: constant-pressure compression from P1 = 12 psia, T1 = 80F; Process 2-3: constantvolume heat addition to 160F; and Process 3-1: adiabatic expansion. (a) Sketch the cycle on p-v and T -s diagram. (b) Determine T2, in R. (c) If the cycle is a power cycle, determine its thermal efficiency. If the cycle is a refrigeration cycle, determine its coefficient of performance.