A gas engine is run on a chemically correct mixture of methane (left(mathrm{CH}_{4} ight)) and air. The
Question:
A gas engine is run on a chemically correct mixture of methane \(\left(\mathrm{CH}_{4}\right)\) and air. The compression ratio of the engine is 10:1, and the trapped temperature and pressure at inlet valve closure are \(60{ }^{\circ} \mathrm{C}\) and \(1 \mathrm{bar}\), respectively. Calculate the maximum temperature and pressure achieved during the cycle if:
(a) combustion occurs at constant volume;
(b) \(10 \%\) of the energy added by the fuel is lost through heat transfer;
(c) the compression process is isentropic.
It can be assumed that the ratio of specific heats, \(\kappa=1.4\), and that the internal energy of methane in the reactants is negligible.
[2956 K; 88.77 bar]
Step by Step Answer:
Advanced Thermodynamics For Engineers
ISBN: 9780080999838
2nd Edition
Authors: D. E. Winterbone, Ali Turan