基于优化翅片结构的pcm -空气热交换器的设计优化与性能分析

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2025-10-16 DOI:10.1016/j.icheatmasstransfer.2025.109764

Mohamed Ahmed Said , Jasim M. Mahdi , Marrwa S. Ghanim , Khalil Hajlaoui , Nashmi H. Alrasheedi , Mohammad Ghalambaz , Pouyan Talebidadehsardari , Nidhal Ben Khedher

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引用次数: 0

摘要

本研究研究了一种新型的三管相变材料(PCM)-空气换热器的设计优化和性能增强，该换热器具有优化的纵向翅片结构，用于建筑供暖应用。通过全面的数值模拟来评估翅片数量、分布、尺寸和操作条件对关键性能指标的影响。在不同雷诺数（500-2000）和进口空气温度（0-10°C）下，分析了七种翅片结构。结果表明，与非翅片配置相比，最佳翅片配置（管内10片，外管28片）使PCM凝固时间缩短55.3%，热回收率提高117.3%。将雷诺数从500增加到2000，总体热回收率提高了113%，凝固时间缩短了45%，但出口峰值温度降低了14.3%。将进口温度从5°C降低到0°C，使系统总热回收率提高了24.7%，凝固时间缩短了约25%。该研究通过在双环形空间中引入创新的非对称PCM分布和最佳翅片布置，推动了该领域的发展，为高性能PCM加热系统建立了关键的设计准则。

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Design optimization and performance analysis of a PCM-to-air heat exchanger with optimized fin configuration for building heating applications

This study investigates the design optimization and performance enhancement of a novel triplex-tube phase change material (PCM)-to-air heat exchanger with optimized longitudinal fin configurations for building heating applications. Comprehensive numerical simulations were conducted to evaluate the influence of fin number, distribution, dimensions, and operating conditions on critical performance metrics. Seven fin configurations were analyzed under various Reynolds numbers (500–2000) and inlet air temperatures (0–10 °C). Results demonstrate that the optimal fin arrangement (10 fins inner pipe, 28 fins outer pipe) achieved 55.3 % reduction in PCM solidification time and 117.3 % increase in heat recovery rates compared to non-finned configurations. Increasing Reynolds number from 500 to 2000 enhanced overall heat recovery by 113 % while reducing solidification times by 45 %, though with a 14.3 % trade-off in peak outlet temperature. Decreasing inlet temperature from 5 °C to 0 °C improved total system heat recovery by 24.7 % and reduced solidification time by about 25 %. The study advances the field by introducing an innovative asymmetric PCM distribution across dual annular spaces with optimal fin arrangements, establishing critical design guidelines for high-performance PCM-based heating systems.

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来源期刊

International Communications in Heat and Mass Transfer 工程技术-力学

CiteScore

11.00

自引率

10.00%

发文量

648

审稿时长

32 days

期刊介绍： International Communications in Heat and Mass Transfer serves as a world forum for the rapid dissemination of new ideas, new measurement techniques, preliminary findings of ongoing investigations, discussions, and criticisms in the field of heat and mass transfer. Two types of manuscript will be considered for publication: communications (short reports of new work or discussions of work which has already been published) and summaries (abstracts of reports, theses or manuscripts which are too long for publication in full). Together with its companion publication, International Journal of Heat and Mass Transfer, with which it shares the same Board of Editors, this journal is read by research workers and engineers throughout the world.