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椭圆管强化多管蓄热器的数值模拟

作者:时间:2023-03-17点击数:

全文下载: 202301013.pdf

 

文章编号: 1672-6987202301-0095-07 DOI10.16351/j.1672-6987.2023.01.013

 

高杨, 何烨, 许玲, 周艳*(青岛科技大学 机电工程学院,山东 青岛 266061

 

摘要: 针对多管式相变蓄热器模型,运用CFD技术对相同横截面积的圆管、椭圆管外的15%石墨烯/石蜡复合相变材料的熔化、凝固过程进行仿真。在考虑自然对流的情况下,模拟结果表明:椭圆管的换热综合性能高于圆管;当内管中水的流速相同时,椭圆管的蓄放热效率分别比圆管高1296%920%

 

关键词: 多管蓄热器; 复合相变材料; 蓄放热; 椭圆管

 

中图分类号: TK 172.4文献标志码: A

引用格式: 高杨, 何烨, 许玲, . 椭圆管强化多管蓄热器的数值模拟[J. 青岛科技大学学报(自然科学版), 2023, 44(1): 95-101.

 

GAO Yang HE Ye XU Ling et al. Numerical simulation of elliptical tube enhanced multi-tube heat accumulatorJ. Journal of Qingdao University of Science and TechnologyNatural Science Edition), 2023 441): 95-101.

 

Numerical Simulation of Elliptical Tube Enhanced Multi-Tube Heat Accumulator

 

GAO Yang HE Ye XU Ling ZHOU Yan

(College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061,China)

 

Abstract: For the multi-tube phase change heat accumulator model, the CFD technology is used to simulate the melting and solidification process of the 1.5% graphene/paraffin composite phase change material outside the round tube and the elliptical tube with the same cross-sectional area. Considering natural convection, the simulation results show that the overall heat transfer performance of the elliptical tube is higher than that of the round tube; when the flow rate of the water in the inner tube is the same, the heat storage and release efficiency of the elliptical tube is 12.96% and 9.20% higher than that of the round tube, respectively.

 

Key words: multi-tube heat accumulator; composite phase change material; heat storage and release; elliptical tube

 

收稿日期: 2022-01-23

基金项目: 国家自然科学基金项目(51176080.

作者简介: 高杨(1996—),女,硕士研究生.*通信联系人.

 

 

 

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