In an ideal constant pressure cycle is the one in which

Question

In an ideal constant pressure cycle, ( is the one in which both, QA as well as QRare at constant pressure ) using air, the overall volume ratio of the cycle is 8:1. Adiabatic compression begins at 2/7^th of the compression stroke when the conditions of the air are 100kN/m², 0.084m³ and 28^oC. If g=1.4 and c_p=1.006 kJ/kg.K,

Determine:

a) The pressure, volume and temperature at the state point of the cycle;

b) The heat received/cycle

c) The work done/cycle

d) The thermal efficiency of the cycle