Melting phase change heat transfer in a quasi-petal tube thermal energy storage unit.

Autor: Mehryan SAM; Young Researchers and Elite Club, Yasooj Branch, Islamic Azad University, Yasooj, Iran., Raahemifar K; College of Information Sciences and Technology (IST), Data Science and Artificial Intelligence Program, Penn State University, State College, Pennsylvania, PA, United States of America.; School of Optometry and Vision Science, Faculty of Science, Dept. of Chemical Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON, Canada.; Electrical and Computer Engineering Dept., Sultan Qaboos University, Muscat, Sultanate of Oman., Ramezani SR; Department of Mechanical Engineering, K. N. Toosi University of Technology, Tehran, Iran., Hajjar A; ECAM Lyon, LabECAM, Université de Lyon, Lyon, France., Younis O; Department of Mechanical Engineering, College of Engineering at Wadi Addwaser, Prince Sattam Bin Abdulaziz University, Al-Kharj, KSA.; Department of Mechanical Engineering, Faculty of Engineering, University of Khartoum, Khartoum, Sudan., Talebizadeh Sardari P; Faculty of Engineering, The University of Nottingham, University Park, United Kingdom., Ghalambaz M; Metamaterials for Mechanical, Biomechanical and Multiphysical Applications Research Group, Ton Duc Thang University, Ho Chi Minh City, Vietnam.; Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2021 Mar 24; Vol. 16 (3), pp. e0246972. Date of Electronic Publication: 2021 Mar 24 (Print Publication: 2021).
DOI: 10.1371/journal.pone.0246972
Abstrakt: In the present study, the thermal energy storage of a hot petal tube inside a shell-tube type Thermal Energy Storage (TES) unit was addressed. The shell is filled with the capric acid Phase Change Material (PCM) and absorbs the heat from a hot U-tube petal. The governing equations for the natural convection flow of molten PCM and phase change heat transfer were introduced by using the enthalpy-porosity approach. An automatic adaptive mesh scheme was used to track the melting interface. The accuracy and convergence of numerical computations were also controlled by a free step Backward Differentiation Formula. The modeling results were compared with previous experimental data. It was found that the present adaptive mesh approach can adequately the melting heat transfer, and an excellent agreement was found with available literature. The effect of geometrical designs of the petal tube was investigated on the melting response of the thermal energy storage unit. The phase change behavior was analyzed by using temperature distribution contours. The results showed that petal tubes could notably increase the melting rate in the TES unit compared to a typical circular tube. Besides, the more the petal numbers, the better the heat transfer. Using a petal tube could increase the charging power by 44% compared to a circular tube. The placement angle of the tubes is another important design factor which should be selected carefully. For instance, vertical placement of tubes could improve the charging power by 300% compared to a case with the tubes' horizontal placement.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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