首页|Numerical study on melting of phase change material in a horizontal container using multi heat transfer tubes

Numerical study on melting of phase change material in a horizontal container using multi heat transfer tubes

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  • NSTL
  • Elsevier
Background: Intermittent solar radiation requires suitable storage to store heat during peak availability. Thermal storage using phase change materials (PCM) is beneficial to solar applications. But low thermal conductivity of PCM slows down its melting. Multi heat transfer tubes inside PCM are a thermal performance enhancement method for faster melting. Methods: In a horizontal container, three heat transfer tubes are studied numerically as upright and inverted positions inside the PCM. The enthalpy porosity method is used for simulating PCM melting. The circular tubes are triangular, with one tube or two tubes near the bottom. PCM's melting and solidification characteristics are analyzed by the inner heat transfer tube (HTT) at 75 degrees C and 30 degrees C, respectively. Significant findings: The configuration of one tube at the bottom is observed as optimal orientation with enhanced PCM melting. The PCM melted at 75 min and solidified at 310 min for optimal configuration. Nusselt number is 37.46 and 27.73 for melting and solidification at the optimal configuration. Such designs suit solar thermal systems to store heat energy faster while the sunlight is highly intermittent. Further, such designs are cost-effective and straightforward thermal storage enhancement techniques with a more productive life. (C) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

Phase change materialsMelting and solidificationThermal energy storageHeat transfer tube orientationSolar thermal applicationsMultitubesTHERMAL-ENERGY STORAGEFORCED-CONVECTIONPARAFFIN WAXSHELLPCMSYSTEMPERFORMANCESOLIDIFICATIONENHANCEMENTPARAMETERS

Punniakodi, Banumathi Munuswamy Swami、Shah, Nehal、Rathore, Varun Kumar、Senthil, Ramalingam

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SRM Inst Sci & Technol

Nirma Univ

2022

10.1016/j.jtice.2022.104214

Journal of the Taiwan Institute of Chemical Engineers

Journal of the Taiwan Institute of Chemical Engineers

EISCI
ISSN：1876-1070
年,卷(期)：2022.131
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