G309 HEAT TRANSFER CHARACTERISTICS OF LAYERED-PLATES TYPE REGENERATOR FOR STIRLING CYCLE REFRIGERATOR(Compressor, special heat pump and others)

概要

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The phenomena in regenerator of Stirling cycle refrigerator are very complex because of oscillatory flow and pressure change. Moreover, geometric configurations of mesh and porous medium also make the flow more complicated one. Thus it is very difficult to solve heat transport phenomena analytically and experimentally. In this study, aiming to understand fundamental mechanism of the phenomena, thermal flow behavior in a layered-plates type regenerator are investigated by imposing oscillatory flow without compression and expansion. Consequently, the layered-plates type regenerator demonstrated temperature distributions suitable for regenerator, using low thermal conductivity materials, e.g. thin stainless steel plates. Moreover the resulting pressure drop is significantly lower than the conventional mesh-type one, which indicated high potential for the use of regenerator. Scaling parameters, such as Reynolds, Prandtl and Strouhal numbers, were introduced and it is proved by simulation that these parameters are valid for characterizing the heat transport phenomena in the layered-plates type regenerator.
一般社団法人日本機械学会の論文
2000-10-01