接近室温的热制冷装置的数值和热分析

IF 0.8 Q4 THERMODYNAMICS
Brahim Kehileche, Younes Chiba, Abdelhalim Tlemçani, Noureddine Henini
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引用次数: 0

摘要

摘要磁场和电场等外部刺激在磁热材料和电热材料中的应用,以及应力和压力在弹性热材料和气压材料中的应用,产生了基于热材料的新一代制冷技术,被认为是传统制冷的新兴替代品。利用Comsol多物理场建立了二维数值模型,研究了在多种材料条件下平行板内制造的主动热蓄热器(ACR)。在这项工作中,我们比较了不同类型的发热材料,在热力学性质,工作机制和潜在的应用作为固体制冷剂在热电制冷装置。为此,考虑了能量方程、Navier-Stocks方程和连续性方程来研究制冷机内的传热现象。水作为载体流体将固体制冷剂的热能输送到热交换器中。本研究在室温下以0.06 m/s的速度和2hz的频率进行。其中,钆在温度跨度、性能系数和冷却功率方面表现最好,高于其他所有发热材料,使其成为全球最有前途的磁热冷却系统。我们的分析为热制冷热材料的选择和优化提供了见解,这可以为可持续能源系统的发展做出贡献。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical and thermal analysis of a caloric refrigeration device operating near room temperature
Abstract The application of external stimuli such as the magnetic and electric field in magnetocaloric and electrocaloric materials, and stress and pressure in elastocaloric and barocaloric materials give rise to a new generation of a refrigeration technology based on caloric materials which are considered an emerging alternative to classical refrigeration. Active caloric regenerator (ACR) made in parallel plates is studied under a large number of materials with Comsol multiphysics for a 2D numerical model. In this work, we compare various types of caloric materials, in terms of their thermodynamic properties, working mechanisms, and potential applications as solid refrigerant on caloric refrigeration devices. For this purpose, the energy equation, Navier-Stocks equation, and continuity equation are considered to study the heat transfer phenomena in refrigerator. The water was used as a carrier fluid to transport the thermal energy from the solid refrigerants to heat exchanger. This study is performed at velocity 0.06 m/s and the frequency 2 Hz at room temperature. Among them, Gadolinium show the best results in term temperature span, coefficient of performance, and the cooling power, higher than every other caloric materials, conferring to magnetocaloric cooling globally the most promising system. Our analysis provides insights into the selection and optimization of caloric materials for caloric refrigeration, which can contribute to the development of sustainable energy systems.
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来源期刊
CiteScore
2.70
自引率
10.00%
发文量
0
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.
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