作動流体として窒素を用いたスターリング冷凍機の性能

（金網および新型マトリクス材を再生器に使用した場合の性能）

抄録

High-pressure helium is often used as the working fluid of Stirling refrigerators. Because, helium has a small molecular weight, which reduces pressure loss in piping sections. However, helium has been in short supply in recent years and its price is high. In this work, the performance of a two-piston alpha type Stirling engine operated as a motor-driven refrigerator was measured using nitrogen as an alternative working fluid. Also, the performance of conventional wire screen and a new type of matrix material called mesh sheet were compared as matrix materials for the regenerator.