Abstract
Stirling engine is very attractive prime mover because of its inherent advantages such as high thermal efficiency, high applicability to use of many kinds of fuels or thermal energies, clean exhaust, low level of vibration and noise etc. But until now, the size of the engines developed are relatively small and the output maximum is 100kW at most. One major reason why few research about large-sized Stirling engine performed is, of course, there is no demand to apply the engine as a high output power plant. But it is very important to discuss about a large-sized Stirling engine for the engine development. So, we have studied mainly about the relation between the engine size and the compression ratio by using computer simulation. Results obtained as the limited area to be good relation for them and expected output.
