Otto, Diesel, and Dual Cycles The pressure-specific volume

Chapter 9, Problem 17P

(choose chapter or problem)

The pressure-specific volume diagram of the air-standard Lenoir cycle is shown in Fig. P9.17. The cycle consists of constant volume heat addition, isentropic expansion, and constant pressure compression. For the cycle, \(p_1=14.7 \mathrm{lbf} / \mathrm{in}^2\) and \(T_1=540^{\circ} \mathrm{R}\). The mass of air is \(4.24 \times 10^{-3} \mathrm{lb}\), and the maximum cycle temperature is \(1600^{\circ} \mathrm{R}\). Assuming \(c_v=0.171 \mathrm{Btu} / \mathrm{lb} \cdot{ }^{\circ} \mathrm{R}\), determine for the cycle

(a) the net work, in Btu.

(b) the thermal efficiency.

                                                     

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