隨著高溫超導體技術與光學紅外感測器的需求增加，使低溫冷凍 機之發展備受關注，其中的史特靈低溫冷凍機具有結構緊凑、工作效 率高、工作溫度區間廣等優點。再生器為史特靈冷凍機中關鍵的其中 一環，對冷凍機之性能表現具有顯著之影響。本研究通過數學模型模 擬及實驗驗證，探討再生器特性對史特靈冷凍機性能之影響。本研究 分析並測試了不鏽鋼編織網、銅編織網、鋼絲絨、3D 列印金屬再生 器四種再生器，結果顯示使用不鏽鋼編織網的再生器設計具有最好的 性能表現。本研究將多個不同網目數的不鏽鋼編織網堆叠組合成多種 再生器配置方案並進行測試，結果顯示組合再生器擁有比單一再生器 更好的性能，驗證了再生器擁有孔隙率梯度變化對性能的正向影響。

Due to rapid development and need for HTS technology and infrared detector, development of cryocooler for low temperature cooling applications has gained increasing attentions lately. Among them is Stirling cryocooler that has the advantages of compact design, high efficiency and wide operating temperature range. The regenerator is a crucial part within Stirling cooler system, having significant effects on overall performance of the cooler. A theoretical model specially emphasizes on effects of regenerator characteristics has been developed and verified by experiments. Four different types of regenerators: woven stainless steel meshes, woven copper meshes, stainless steel wool and 3D-printed metal regenerator have been analyzed and tested. Results yield woven stainless steel meshes as the superior regenerator choice. Additionally, woven stainless steel meshes of different mesh number were combined to create multiple hybrid regenerator configuration. Performance improvement has been obtained by implementing hybrid regenerator configuration, showing positive effects of having porosity gradient along the regenerator.

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