A new design to enhance the conductive and convective heat transfer of latent heat thermal energy storage units

被引：50

作者：

Eisapour, Amir Hossein ^{[1
]}

Shafaghat, A. H. ^{[2
]}

Mohammed, Hayder I. ^{[3
]}

Eisapour, Mehdi ^{[4
]}

Talebizadehsardari, Pouyan ^{[5
]}

Brambilla, Arianna ^{[6
]}

Fung, Alan S. ^{[1
]}

机构：

[1] Toronto Metropolitan Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada

[2] Shiraz Univ, Sch Mech Engn, Dept Energy & Aerosp Engn, Shiraz, Iran

[3] Univ Garmian, Coll Educ, Dept Phys, Kurdistan, Iraq

[4] Univ Calgary, Dept Chem & Petr Engn, 2500 Univ Dr, NW, Calgary, AB T2N 1N4, Canada

[5] Brunel Univ London, Inst Energy Futures, Ctr Sustainable Energy Use Food Chains, Kingston Lane,, Uxbridge UB8 3PH, Middlesex, England

[6] Univ Sydney, Sch Architecture Design & Planning, Sydney, NSW, Australia

来源：

APPLIED THERMAL ENGINEERING | 2022年 / 215卷

关键词：

Latent heat thermal energy storage; Double -pipe heat exchanger; Wavy tube; Twisted tube; Conical container; Nanoparticles; phase change material; PHASE-CHANGE MATERIAL; PERFORMANCE ANALYSIS; SYSTEM; PCM; OPTIMIZATION; NANOFLUIDS; BUILDINGS;

D O I：

10.1016/j.applthermaleng.2022.118955

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The gap between the existing energy demand and supply is of immense significance worldwide, suggesting the need to develop highly effective storage technologies. This study concerns an innovative design for Phase Change Material (PCM) thermal energy storage suitable for solar energy applications. The proposed configuration for the tube benefits from the wavy profiles with different amplitude characteristics and the twisted shape. The impacts of the simultaneous implementation of the wavy and twisted tube are also examined to achieve an optimal model. The best design for the thermal energy storage is then integrated with the ascending and descending conical container shapes to gain the potential advantage of natural convection. Ultimately, the best case is treated with the nanoparticles (1, 3 and 5 vol%) to enhance thermal conductivity in the storage. The results reveal that the descending wave amplitude is the most effective profile when the least charging time is needed. Furthermore, the ascending conical shape container enhances the charging process (68 min for the complete charging process), taking full advantage of the natural convection phenomenon. Overall, the ultimate heat storage design offers nearly 83 % faster charging time than conventional straight tube heat storage units.

引用

页数：16

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