Study of effects of constructed fins on melting of PCM in helical coil heat exchanger

被引：6
作者：
Marzouk, S. A. [1 ]
Almehmadi, Fahad Awjah [2 ]
Aljabr, Ahmad [3 ]
Sharaf, Maisa A. [4 ]
Alam, Tabish [5 ]
Dobrota, Dan [6 ]
机构：
[1] Kafrelsheikh Univ, Fac Engn, Dept Mech Engn, Kafrelsheikh 33511, Egypt
[2] King Saud Univ, Muzahimiyah Branch, Coll Appl Engn, Dept Appl Mech Engn, POB 800, Riyadh 11421, Saudi Arabia
[3] Majmaah Univ, Coll Engn, Dept Mech & Ind Engn, Al Majmaah 11952, Saudi Arabia
[4] Damanhour Univ, Fac Engn, Mech Engn Dept, Damanhour 22511, Egypt
[5] CSIR Cent Bldg Res Inst, Architecture Planning & Energy Efficiency, Roorkee 247667, India
[6] Lucian Blaga Univ Sibiu, Fac Engn, Dept Ind Engn & Management, Sibiu 550024, Romania
来源：
CASE STUDIES IN THERMAL ENGINEERING | 2025年 / 68卷
关键词：
Melting process; PCM; Longitudinal fins; Plain tube; Constructed fins; Helical coil; THERMAL-ENERGY STORAGE; PHASE-CHANGE MATERIALS; CONDUCTIVITY ENHANCEMENT; PERFORMANCE ANALYSIS; DESIGN; SYSTEM; SOLIDIFICATION; PARAMETERS;
D O I：
10.1016/j.csite.2025.105896
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The PCM melting process using a helical coil heat exchanger with a plain tube, longitudinal fins, and constructed fins is investigated. Water serves as the heat transfer fluid and paraffin wax as the PCM. A numerical simulation by Ansys Fluent software is conducted to study the liquid fraction and temperature of the PCM with time and the effectiveness of the melting process. The numerical results illustrate a 52 % and 65 % liquid fraction increase with longitudinal fins and constructed fins, respectively. The melting time can be shortened for longitudinal fins by 29 % and for constructed fins by 50 %. The effectiveness of the PCM melting process decreases over time due to the reduction in water outlet temperature. Constructed fins improve melting efficiency by increasing surface area and heat transfer. Radial melting starts at the tube wall, driven by conduction and convection. Fins on the tube surface enhance heat transfer, shorten melting time, and increase liquid fraction, improving the overall performance of the PCM melting process.
引用
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页数：17
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