Pressurised cylinder contains 0.085m³ gas @ 1.032bar at temp of 38C.

System gas is compressed according to law PV=^1.3 = constant, until the pressure reaches 5.5 bar.

The specific gas is has folllowing properties:

Cv = 0.715 kj/jg . K

R = 0.287kJ.kG . K

1. Make a formula showing exactly how the eat energy is supplied or rejected and what its magnitude is in kJ.

2. Explain importance of compression ratio and how it may be found in an experiment.