Performance of stirling engines (arranging method of experimental results and performance prediction)

We have developed five kinds of high- and low-temperature differential Stir ling engines and their engine performance was investigated experimentally. In order to determine the parameters that affect engine performance, experi mental results were discussed and compared with results calculated using an alytical methods. We show an arranging method for the experimental results, and consider the performance of general Stirling engines. After using the arranging method with nondimensional numbers obtained by a dimensional anal ysis, a prediction method, which is used at the early design stage, is form ulated. One of the nondimensional numbers in this prediction method is calc ulated based on engine specifications, including the properties of the work ing gas. The prediction method can predict engine speed, output power, the effect of working gas and operating conditions.