Compound Heat Transfer Augmentation of a Shell-and-Coil Ice Storage Unit with Metal-Oxide Nano Additives and Connecting Plates

被引:28
作者
Afsharpanah, Farhad [1 ]
Ajarostaghi, Seyed Soheil Mousavi [1 ]
Hamedani, Farzam Akbarzadeh [2 ]
Pour, Mohsen Saffari [3 ]
机构
[1] Babol Noshirvani Univ Technol, Mech Engn Dept, Babol 47148, Iran
[2] Chabahar Maritime & Marine Univ, Mech Engn Dept, Chabahar 99717, Iran
[3] Shahid Bahonar Univ Kerman, Fac Engn, Mech Engn Dept, Kerman 76169, Iran
关键词
CFD analysis; numerical simulation; PCM; nanoparticles; ice storage; solidification; thermal energy storage; phase change process; heat transfer enhancement; heat exchanger;
D O I
10.3390/nano12061010
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Due to the high enthalpy of fusion in water, ice storage systems are known as one of the best cold thermal energy storage systems. The phase change material used in these systems is water, thus it is inexpensive, accessible, and completely eco-friendly. However, despite the numerous advantages of these systems, the phase change process in them is time-consuming and this leads to difficulties in their practical application. To solve this problem, the addition of nanomaterials can be helpful. This study aims to investigate the compound heat transfer enhancement of a cylindrical-shaped unit equipped with double helically coiled coolant tubes using connecting plates and nano additives as heat transfer augmentation methods. Complex three-dimensional numerical simulations are carried out here to assess the best heat exchanger material as well as the impact of various nanoparticle types, including alumina, copper oxide, and titania, and their concentrations in the PCM side of the ice storage unit. The influence of these parameters is discussed on the charging rate and the temperature evolution factor in these systems. The results suggest that using nano additives, as well as the connecting plates, together is a promising way to enhance the solidification rate by up to 29.9%.
引用
收藏
页数:17
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