Experimental study on the melting behavior of a phase change material in a conical coil latent heat thermal energy storage unit

被引：68
作者：
Mahdi, Mustafa S. [1 ]
Mahood, Hameed B. [2 ]
Campbell, Alasdair N. [3 ]
Khadom, Anees A. [1 ]
机构：
[1] Univ Diyala, Coll Engn, Dept Chem Engn, Diyala 32001, Iraq
[2] Univ Surrey, Fac Engn & Phys Sci, Dept Chem & Proc Engn, Guildford GU2 7XH, Surrey, England
[3] Univ Sheffield, Dept Chem & Biol Engn, Sheffield, S Yorkshire, England
来源：
APPLIED THERMAL ENGINEERING | 2020年 / 175卷
关键词：
Latent heat storage; Helical coil; Conical coil; Natural convection; Phase change material (PCM); METAL FOAM; PCM; TUBE; PERFORMANCE; SHELL; SYSTEM; SOLIDIFICATION; EXCHANGER; FINS; NANOPARTICLES;
D O I：
10.1016/j.applthermaleng.2019.114684
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
An experimental study on the melting behavior of paraffin wax used as a phase change material (PCM) in a conical coil latent heat energy storage unit (LHSU) was performed. The experiments were conducted concurrently for conical coil and normal coil LHSUs to compare their thermal performances. The effect of heat transfer fluid (HTF) inlet temperature was examined. The evolution of the temperature during charging, the spatial variation in temperatures and captured images of the melting PCM in both LHSUs were compared. The results indicated that the melting rate in the conical coil LHSU was enhanced by 20.97%, 22.13% and 28.32% in comparison with that of normal coil LHSU at HTF inlet temperature of 70 degrees C, 75 degrees C and 80 degrees C respectively. Moreover, the rate of energy stored in the conical coil LHSU was a notably faster than that of the normal coil LHSU. The HTF inlet temperature has a similar effect on both LHSUs by substantially decreasing their melting time.
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页数：10
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