Theoretical Analysis and Optimization of Regenerator of Stirling Cryocooler

American Journal of Science and Technology

KadayamVenkatraman Srinivasan¹  RahulPokale²  ArulprakasajothiMahalingam³  ManimaranArunachalam³ 

[1] Low Temperature Facility, Tata Institute of Fundamental Research, Mumbai, India.;Manjara Charitable Trust's Rajiv Gandhi Institute of Technology, Mumbai, India.;School of Mechanical Engineering, Veltech Dr RRDr SR Technical University, Chennai, India.

关键词: Cryocooler;    Regenerator;    Optimization;    Simulation;    Porosity;   

学科分类：工程和技术（综合）

来源: AASCIT

【 摘 要 】

Stirling cryocooler operates in a reverse Stirling cycle to produce refrigeration from work. Machines operating on the Stirling Cycle theoretically have the highest efficiency possible for any practical thermodynamic system. The regenerator is the key element of Stirling cryocooler and the performance of the regenerator directly affects the cryocooler performance. Regenerator is a compact periodic heat exchanger in which the fluid is in direct contact with the solid heat transfer area. Thus, it is essential to analyze the regenerator matrix, geometry, porosity and material along with the analysis on the thermal and flow characteristics of the regenerator for its optimization using numerical analysis. The preliminary studies were carried out on the porous sintered material type of cryocooler regenerator. Using the energy balance and continuity equation, matrix and fluid thermal equations were derived. CFD simulation has been carried out using ANSYS 16.0 and the porosity of the regenerator is predicted using the REGEN 3.3 Numerical Analysis Software for Regenerators. The main objective of this study is to maximize the available refrigeration by optimizing the key regenerator parameters such as the porosity and matrix material.

【 授权许可】

Unknown