文章基本信息

标题：Numerical analysis of heat transfer area effect on cooling performance in regenerator of free-piston Stirling cooler
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作者：Hong Seok Kim ; In Cheol Gwak ; Seong Hyuk Lee 等
期刊名称：Case Studies in Thermal Engineering
印刷版ISSN：2214-157X
电子版ISSN：2214-157X
出版年度：2022
卷号：32
页码：101875
语种：English
出版社：Elsevier B.V.
摘要：This study numerically investigated the cooling characteristics of a free-piston Stirling cooler (FPSC), which is considered as an alternative cooling system. In particular, the effect of the heat transfer area of the regenerator on the cooling performance and pressure loss of the FPSC was estimated. Commercial code ANSYS Fluent (v.17.2) was used for numerical analysis. A thermal non-equilibrium model was adopted to consider the effect of the heat transfer area of the wire mesh type regenerator. Furthermore, the dynamic mesh method was used to simulate the behavior of the dynamic components. As the heat transfer area of the regenerator increased, the cold end temperature that reached the quasi-steady state decreased. However, simultaneously, the pressure drop of the regenerator increased, which increased the input PV power required to drive the FPSC and decreased efficiency.
关键词：Free-piston Stirling cooler (FPSC) Computational fluid dynamics (CFD) Thermal non-equilibrium model Dynamic mesh