Design evolution of indirect evaporative air-cooling system through multiple configurations for the enhancement of heat and mass transfer mechanism

IF 6.4 2区工程技术 Q1 MECHANICS

International Communications in Heat and Mass Transfer Pub Date : 2024-11-26 DOI:10.1016/j.icheatmasstransfer.2024.108393

Sabir Rasheed , Muzaffar Ali , Hassan Ali , Nadeem Ahmed Sheikh , Guiqiang Li

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引用次数: 0

Abstract

Cooling demand is escalating because of the climate change and population growth in emerging nations. One of the today's concerns is meeting exponentially raising cooling requirements. Additionally, sustainable development goals (SDGs) such as SDG 03, SDG 07, and SDG 13 emphasize the need of environmentally friendly cooling techniques for human thermal comfort. Therefore, it is essential to develop novel approaches for cooling indoor spaces. The current study presents the design evolution of a Maisotsenko cycle-based indirect evaporative air-cooling system (IEC), with a focus on air-water flow patterns, structural design, and the improved energy efficiency by utilizing locally accessible low-cost polymeric materials. This study also comprises a thorough experimental investigation of an indirect evaporative cooling system by developing multiple configurations (Config) of heat and mass exchangers at the stack level. The experimental findings demonstrate that thermal efficiency of the IECs enhances by increasing the ambient air temperature and wetted area in wet channels. Overall, the resultant wetbulb and dewpoint effectiveness of Config 1-Config 6 vary from 0.29 to 1.12 and 0.22 to 0.86, respectively. Moreover, the configuration 6 has the maximum cooling capacity, coefficient of performance (COP), and energy efficiency ratio (EER) of 2.07 kW, 6.91, and 23.59, respectively under control conditions by utilizing the air conditioning laboratory unit. The results clearly indicate that proposed design configurations incorporating polymeric materials, having high CC and EER, are more effective for air-cooling in hot and dry climate conditions.

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通过多种配置改进间接蒸发式空气冷却系统的传热和传质机制的设计演变

由于气候变化和新兴国家的人口增长，制冷需求不断攀升。满足成倍增长的制冷需求是当今人们关注的问题之一。此外，可持续发展目标（SDG），如 SDG 03、SDG 07 和 SDG 13，都强调需要采用环境友好型冷却技术来提高人类的热舒适度。因此，开发新型室内空间冷却方法至关重要。本研究介绍了基于麦索岑科循环的间接蒸发空气冷却系统（IEC）的设计演变，重点关注空气-水流动模式、结构设计，以及利用当地可获得的低成本聚合材料提高能源效率。这项研究还包括对间接蒸发冷却系统进行全面的实验研究，在烟囱层开发多种热交换器和质量交换器配置（Configuration）。实验结果表明，通过提高环境空气温度和增加湿通道的润湿面积，间接蒸发冷却系统的热效率得到了提高。总体而言，配置 1 至配置 6 的湿球效应和露点效应分别为 0.29 至 1.12 和 0.22 至 0.86。此外，利用空调实验室装置，配置 6 在控制条件下的最大制冷量、性能系数 (COP) 和能效比 (EER) 分别为 2.07 kW、6.91 和 23.59。结果清楚地表明，在炎热和干燥的气候条件下，采用高 CC 和高能效比聚合物材料的拟议设计配置能更有效地进行空气冷却。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.