Sources of renewable energy come in many different types, where solar thermal energy technology is one of the most feasible energy sources in Taiwan. The central and south Taiwan is sunshine resource-rich region. Therefore, solar thermal energy can be utilized in a combination of concentrating dish solar power system [1] and Stirling engine for power generation with efficiency of 22-28% [2]. Other than that, the north-east and east Taiwan region are located on the Pacific Ocean Ring of Fire, providing an abundant source of geothermal energy, predicted to have power generation potential of 730 MW [3]. This heat energy source can be applied in Stirling engine power generation to provide clean energy. Stirling engine is made of compression space at cold end, expansion space at hot end, regenerator connecting both spaces and its linked mechanisms. The ideal Stirling cycle is made of two isochoric processes and two isothermal processes.
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