Hydrogen, helium and thermo-acoustic refrigerators

IF 0.8 Q4 THERMODYNAMICS

International Journal of Air-conditioning and Refrigeration Pub Date : 2023-09-20 DOI:10.1007/s44189-023-00038-4

B. G. Prashantha, G. S. V. L. Narasimham, S. Seetharamu, Vinayak B. Hemadri

引用次数: 0

Abstract

Abstract In this work the design and analysis of 1 kW thermo-acoustic refrigerators with hydrogen and helium for the temperature difference of 38 K is discussed. Helium is the best for thermoacoustic refrigerators compared to the other competent gases. But hydrogen is chosen since it is less expensive and better thermophysical properties compared to helium. The best parallel plates geometry with 15% blockage is chosen for the stack and heat exchangers. The effect of resonance frequency of hydrogen and helium varying from 400–600 Hz on the theoretical performance is discussed. The coefficient of performance and the power density of 1.65 and 40.3 kW/m 3 for hydrogen, and 1.58 and 19.2 kW/m 3 for helium is reported for the optimized designs, respectively. The theoretical results are compared with the DeltaEC software results, shows the cooling power and coefficient of performance of 590 W and 1.11 for hydrogen, and 687 W and 1.25 for helium, respectively.

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氢，氦和热声冰箱

摘要本文讨论了温差为38k的1kw氢氦热声制冷机的设计与分析。与其他气体相比，氦是热声制冷机的最佳选择。但之所以选择氢，是因为它比氦更便宜，热物理性质也更好。最佳的平行板几何形状与15%的堵塞是选择为堆栈和热交换器。讨论了氢、氦共振频率在400 ~ 600hz范围内变化对理论性能的影响。优化设计的性能系数和功率密度分别为氢气的1.65和40.3 kW/m 3，氦气的1.58和19.2 kW/m 3。理论计算结果与DeltaEC软件计算结果进行了比较，结果表明，氢气的冷却功率为590 W，性能系数为1.11，氦气的冷却功率为687w，性能系数为1.25。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Air-conditioning and Refrigeration THERMODYNAMICS-

CiteScore

2.70

自引率

10.00%

发文量

期刊介绍： As the only international journal in the field of air-conditioning and refrigeration in Asia, IJACR reports researches on the equipments for controlling indoor environment and cooling/refrigeration. It includes broad range of applications and underlying theories including fluid dynamics, thermodynamics, heat transfer, and nano/bio-related technologies. In addition, it covers future energy technologies, such as fuel cell, wind turbine, solar cell/heat, geothermal energy and etc.