1965-02-01

A Thermodynamic Analysis of the Stirling Cycle and a Comparison with Experiment 650078

An analysis of the Stirling cycle has been carried out in which most of the assumptions made in previous theoretical studies have been discarded. The effects of nonisothermal expansion and compression processes, aerodynamic friction, and imperfect regeneration are taken into account. Theoretical performance figures are obtained for an engine of a particular geometry and are compared to results obtained in a parallel experimental program. The experimental values of thermal efficiency and power output are found to be lower than those predicted by the theory. A better correlation is obtained if allowance is made for the increase in friction factor which takes place in fluctuating flow conditions.

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