Melting enhancement of PCM in a finned tube latent heat thermal energy storage

Sameh Ahmed; Aissa Abderrahmane; Abdulkafi Mohammed Saeed; Kamel Guedri; Abed Mourad; Obai Younis; Thongchai Botmart; Nehad Ali Shah

doi:10.1038/s41598-022-15797-0

Melting enhancement of PCM in a finned tube latent heat thermal energy storage

Sci Rep. 2022 Jul 7;12(1):11521. doi: 10.1038/s41598-022-15797-0.

Authors

Sameh Ahmed^#^{1

2}, Aissa Abderrahmane³, Abdulkafi Mohammed Saeed⁴, Kamel Guedri⁵, Abed Mourad³, Obai Younis⁶, Thongchai Botmart⁷, Nehad Ali Shah^#⁸

Affiliations

¹ College of Science, King Khalid University, Abha, 61413, Saudi Arabia.
² Department of Mathematics, Faculty of Science, South Valley University, Qena, 83523, Egypt.
³ Laboratoire de Physique Quantique de La Matière et Modélisation Mathématique (LPQ3M), University of Mascara, Algeria, Algeria.
⁴ Department of Mathematics, College of Science, Qassim University, Buraydah, Kingdom of Saudi Arabia.
⁵ Mechanical Engineering Department, College of Engineering and Islamic Architecture, Umm Al-Qura University, P.O. Box 5555, Makkah, 21955, Saudi Arabia.
⁶ College of Engineering at Wadi Addwaser, Mechanical Engineering Department, Prince Sattam Bin Abdulaziz University, WadiAddwaser, Saudi Arabia.
⁷ Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand. thongbo@kku.ac.th.
⁸ Department of Mechanical Engineering, Sejong University, Seoul, 05006, South Korea.

^# Contributed equally.

Abstract

The current paper discusses the numerical simulation results of the NePCM melting process inside an annulus thermal storage system. The TES system consists of a wavy shell wall and a cylindrical tube equipped with three fins. The enthalpy-porosity method was utilized to address the transient behavior of the melting process, while the Galerkin FE technique was used to solve the system governing equations. The results were displayed for different inner tube positions (right-left-up and down), inner cylinder rotation angle (0 ≤ α ≤ 3π/2), and the nano-additives concentration (0 ≤ ϕ ≤ 0.04). The findings indicated that high values of nano-additives concentration (0.4), bigger values of tube rotation angle (3π/2), and location of the tube at the lower position accelerated the NePCM melting process.