Otto, Diesel, and Dual Cycles For the cycle in Problem 9.34, plot each of the quantities calculated in parts (a) through (d) versus the ratio of constant-volume heat addition to total heat addition varying from 0 to 1. Discuss.
Problem 9.34
An air-standard dual cycle has a compression ratio of 9. At the beginning of compression, p1 = 100 kPa, T1 = 300 K, and V1 = 14 L. The heat addition is 22.7 kJ, with one half added at constant volume and one half added at constant pressure. Determine
(a) the temperatures at the end of each heat addition process, in K.
(b) the net work of the cycle per unit mass of air, in kJ/kg.
(c) the thermal efficiency.
(d) the mean effective pressure, in kPa.
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