Thursday, November 18, 2010

Rate of Heat Transfer

                    Heat transfer during a polytropic process
                                        Q1-2 = (segma) - n / (segma) - 1 * W1-2
 where W1-2 is the work done during polytropic process.
                     If dQ is the small quantity of heat transfer during small change of pressure and volume, then
                                                 dQ = (segma) - n / (segma) - 1 * pdv
Rate of heat transfer per unit volume,
                                                dQ / dv = (segma) - n / (segma) - 1 * p

and rate of heat transfer per second,
                                     dQ / dt = dQ / dv * dv / dt = (segma) - n / (segma) -1 * p * dv / dt
where dv / dt is the swept volume of the piston per second.

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