(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Air is compressed to 6% of its initial volume in the cylinder of a diesel engine. In the process, its pressure increased from 1 bar to 41 bar.

Calculate the polytropic exponent for this process and comment on the associated heat transfer.

2. Relevant equations

PV^λ = constant

3. The attempt at a solution

Pinital (Vinital)^λ = Pfinal(Vfinal)^λ

Pinitial = 1 bar

P final = 41 bar

V initial = 100%

V final = 94%

Well I'm pretty much not sure if I'm going about solving this (probably simple) problem in the right way. Anyone care to help?

Also do you have to change the units from bar to pascals?

Thanks dudes and dudettes

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# Polytropic exponent, thermodynamics question

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