Otto, Diesel, and Dual Cycles The pressure-specific volume diagram of the air-sta...

Otto, Diesel, and Dual Cycles

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, p₁ = 14.7 lbf/in.² and T₁ = 540°R. The mass of air is 4.24 x 10^-3 lb, and the maximum cycle temperature is 1600°R. Assuming c_v = 0.171 Btu/lb . °R, determine for the cycle

(a) the net work, in Btu.

(b) the thermal efficiency.