An air-standard dual cycle has a compression ratio of 9.
Chapter 9, Problem 9.34(choose chapter or problem)
An air-standard dual cycle has a compression ratio of 9. At the beginning of compression, \(p_{1}=100 \mathrm{kPa} \text { and } T_{1}=300 \mathrm{~K}\). The heat addition per unit mass of air is 1400 kJ/kg, with two-thirds added at constant volume and one-third 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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