8. A three process operates on 113g of nitrogen is initiated by an isentropic expansion 1-2...

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8. A three process operates on 113g of nitrogen is initiated by an isentropic expansion 1-2 with an expansion ratio of r 5, p 689.5 kPaa, t-149°C; an isothermal process 2-3 and constant pressure 3-1. Determine (a) p, V, T at each point, (b) QA and QR. (c) W from the pV plane (d) e and mep (e) if 100 Hz are completed find the power in kW. Ans. (b) 23.53, -16.8 kJ (c) 6.73 kJ (d)73.3 kPa (e) 673kW 8. A three process operates on 113g of nitrogen is initiated by an isentropic expansion 1-2 with an expansion ratio of r 5, p 689.5 kPaa, t-149°C; an isothermal process 2-3 and constant pressure 3-1. Determine (a) p, V, T at each point, (b) QA and QR. (c) W from the pV plane (d) e and mep (e) if 100 Hz are completed find the power in kW. Ans. (b) 23.53, -16.8 kJ (c) 6.73 kJ (d)73.3 kPa (e) 673kW