本研究將分為兩個部分，第一部分探討史特靈熱泵使用不同的氣體介質，在不同操作壓力與轉速下對性能影響。以實驗值得出的熱端放熱率與機械輸入功率定義實驗性能係數COP_M作為評斷指標。第二部分使用第一部分得出最佳性能下的氣體介質，探討再生器孔質材料對於史特靈熱泵性能影響。理論方面，採取非理想絕熱模型，考量氣體介質流經各腔室和截面變化所產生的壓降，利用熱阻計算熱傳，此處熱傳包含壁面與氣體介質和壁面與水套間的熱傳。並將實驗與理論值相互驗證。本研究結果顯示，在4 bar與轉速500 rpm的操作下，性能表現最佳者為氫氣，其次為氦氣、氮氣和空氣，最佳性能係數COP_M為2.35，並在5 bar與轉速1000 rpm的條件下，最高熱端出口水溫可達40.91度。再生器孔質材料的實驗的結果顯示，以氫氣為氣體介質，以及以不鏽鋼為材質時，孔隙率在0.64，操作壓力同為4 bar與轉速500 rpm的條件下，可進一步將性能係數COP_M提升至2.37。

This research is divided into two parts. The first part explores the performance of Stirling heat pumps using different gas mediums at various operating pressures and rotational speeds. The experimental performance coefficient 〖COP〗_M is defined using the experimentally obtained heat rejection rate at the hot end and mechanical input power as the evaluation index. In the second part, the optimal gas mediums identified from the first part is used to investigate the impact of regenerator porous materials on the performance of the Stirling heat pump. The theoretical approach adopts a non-ideal adiabatic model. The experimental and theoretical values are mutually validated. It indicates that under the operating conditions of 4 bar and 500 rpm, hydrogen exhibits the best performance among the tested gas mediums, followed by helium, nitrogen, and air, with the optimal 〖COP〗_M reaching 2.35. Regarding the experiments on regenerator porous materials, using hydrogen as the working fluid and stainless steel as the material with a porosity of 0.64, under the same operating conditions of 4 bar and 500 rpm, the 〖COP〗_M can be further improved to 2.37.

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