Problem $2(20$ points$)$

An Ideal Otto cycle has a compression ratio of $9\mathrm{.}4215$ at the beginning of compression process, air is at $100$ kPa and $25C.$ The working fluid is air, please find compression work $(k\frac{J}{k}g)$ considering variable specific heats.

Figure $2-$ The ideal Otto cycle P$-$V diagramProblem $2(20$ points$)$

An Ideal Otto cycle has a compression ratio of $9\mathrm{.}4215$ at the beginning of compression process, air is at $100$ kPa and $25C.$ The working fluid is air, please find compression work $(k\frac{J}{k}g)$ considering variable specific heats.

Figure $2-$ The ideal Otto cycle P$-$V diagram