Numerical Simulation of Solar Air Heater using Paraffin Wax-Aluminum Compound as Phase Changing Material

Atul Kumar, P. Bhandari, K. S. Rawat
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引用次数: 13

Abstract

This paper presents a theoretical investigation of solar air heater using phase change material (PCM). PCM used in present configuration is homogenous mixture of paraffin wax with Aluminium powder. The purpose of using Aluminium powder with paraffin wax is to increase the thermal conductivity. PCM mixtures are encapsulated in cylinders and are used as solar absorbers. Using MATLAB program, the effect of different parameters is studied. It has been observed that with increase in mass flow rate, air outlet temperature decreases and freezing time of cylinder decreases. However, at constant mass flow rate, with increase in cylinder radius, air temperature decreases and while freezing time increase sharply. The different parameters have  to be chosen such that performance of solar air heater can be optimized.
石蜡-铝复合相变材料太阳能空气加热器的数值模拟
本文对相变材料太阳能空气加热器进行了理论研究。目前使用的PCM是石蜡和铝粉的均质混合物。铝粉与石蜡混合使用的目的是增加导热性。PCM混合物被封装在圆柱体中,用作太阳能吸收器。利用MATLAB编写程序,研究了不同参数的影响。结果表明,随着质量流量的增加,出气口温度降低,筒体冻结时间缩短。而在质量流量不变的情况下,随着筒体半径的增大,空气温度降低,冻结时间急剧增加。为了优化太阳能空气加热器的性能,必须选择不同的参数。
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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CiteScore
4.20
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