Experimental investigation of heat transfer characteristics of distilled water and ethanol in electrospray surface cooling

IF 2.6 3区工程技术 Q2 ENGINEERING, MECHANICAL

International Journal of Heat and Fluid Flow Pub Date : 2026-04-01 Epub Date: 2026-01-31 DOI:10.1016/j.ijheatfluidflow.2026.110280

Jiyeop Kim, Munhee Lee, Jung Goo Hong

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Abstract

Electrospray surface cooling is an emerging and effective technology for thermal management in high-performance electronic and advanced engineering systems. This study investigates and compares the heat transfer performance of distilled water and ethanol as environmentally friendly working fluids in electrospray cooling. The effects of varying flow rate and spray mode on heat flux, heat transfer coefficient, and enhancement factor were systematically examined. The results show that distilled water provides superior heat transfer performance due to its higher specific heat capacity. Additionally, increases in both flow rate and applied voltage significantly enhanced all evaluated heat transfer parameters for both fluids. These findings provide valuable insights for optimizing fluid selection and operating conditions in electrospray surface cooling systems, thereby contributing to the development of high-performance thermal management technologies.

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蒸馏水与乙醇电喷雾表面冷却换热特性的实验研究

电喷雾表面冷却是一种新兴的、有效的技术，用于高性能电子和先进工程系统的热管理。研究并比较了蒸馏水和乙醇两种环保工质在电喷雾冷却中的换热性能。系统考察了不同流量和喷射方式对热流密度、换热系数和强化系数的影响。结果表明，蒸馏水具有较高的比热容，具有较好的传热性能。此外，流速和施加电压的增加显著提高了两种流体的传热参数。这些发现为优化电喷雾表面冷却系统的流体选择和操作条件提供了有价值的见解，从而有助于高性能热管理技术的发展。

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来源期刊

International Journal of Heat and Fluid Flow 工程技术-工程：机械

CiteScore

5.00

自引率

7.70%

发文量

131

审稿时长

33 days

期刊介绍： The International Journal of Heat and Fluid Flow welcomes high-quality original contributions on experimental, computational, and physical aspects of convective heat transfer and fluid dynamics relevant to engineering or the environment, including multiphase and microscale flows. Papers reporting the application of these disciplines to design and development, with emphasis on new technological fields, are also welcomed. Some of these new fields include microscale electronic and mechanical systems; medical and biological systems; and thermal and flow control in both the internal and external environment.