Performance of new matrix for Stirling engine regenerator

Related to recent environmental and energy problems, Stirling cycle technology has attracted attention. For realization of Stirling engine with higher efficiency, it is essential to design and develop a suitable heat exchange system for each machine. To improve the engine performance, a new type matrix was proposed and developed. It is a stacked mesh sheet type. Each thin sheet has small rectangle holes where working fluid flows. Narrow and shallow grooves, which are cut on the sheet surface to connect the holes, reduces flow resistance. The stainless steel sheets were made from a pattern sheet easily. The stacked mesh sheets are convenient for assembling and maintenance. Two mesh sheet-type matrixes were manufactured for this study. The performance of each matrix was measured with a NS03T engine and a test stand. The new matrix improved the engine output power and efficiency. This paper introduces the experimental results and the characteristics of the new matrixes. The performance was compared with conventional stacked wire screens.