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In an Otto cycle air is compressed from an initial pressure 120 kPa and temperature 370...

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Physics

In an Otto cycle air is compressed from an initialpressure 120 kPa and temperature 370 T (K). The cycle hascompression ratio of 10. In the constant volume heat additionprocess 1000 kJ/kg heat is added into the air. Consideringvariation on the specific heat of air with temperature,determine,

(a) the pressure and temperature at the end of heataddition process (show the points on P-v diagram)

(b) the network output

(c) the thermal efficiency

(d) the mean effective pressure for thecycle.

The gas constant of air is R = 0.287kJ/kg.K

(Describe the necessary assumptions you have consideredin your solutions.)

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