Review on Anti-Frost Technology Based on Microchannel Heat Exchanger

doi:10.1007/s12204-022-2539-x

Abstract

Abstract: Frosting is an inevitable adverse phenomenon in many fields such as industrial refrigeration, cryogenics, and heat pump air conditioning, which may influence the efficiency of the equipment and increase the energy consumption of the system. The complicated louvered-fin structure and fluid-channels arrangements of the microchannel heat exchanger (HEX) will affect the heat transfer performance and frosting characteristics. First, this article analyzes different factors such as refrigerant distribution, refrigerant flow pattern, and HEX surface temperature distribution. Further, combined with the features of the microchannel HEX, the existing anti-frosting technologies and various methods of surface treatment for anti-frosting are summarized. The review focuses on the preparation of superhydrophobic surfaces and their superior properties. Furthermore, the internal mechanism is analyzed in conjunction with the relevant research of our group. Superhydrophobic character has excellent anti-frosting performance and heat transfer performance, which is of great significance for improving energy-saving and system performance. Finally, the future development of superhydrophobic surface technology is analyzed and prospected.

Key words: anti-frost technology, microchannel heat exchanger (HEX), superhydrophobic surface

摘要： 结霜是工业制冷、低温制冷、热泵空调等诸多领域不可避免的不良现象，其影响设备效率，增加系统能耗。微通道换热器复杂的百叶翅片结构和流体通道布置会影响其换热性能和结霜特性。首先，本文分析了不同的因素，如制冷剂分布、制冷剂流型和换热器表面温度分布。进一步，结合微通道换热器的特点，总结了现有的防霜技术和各种防霜表面处理方法。综述了超疏水表面的制备及其优越的性能。并结合本课题组的相关研究，分析其内在机制。超疏水特性具有优良的防霜性能和传热性能，对提高节能和系统性能具有重要意义。最后，对超疏水表面技术的发展前景进行了分析和展望。

关键词: 防冻技术，微通道热交换器，超疏水表面

CLC Number:

YE Zhenhong(叶振鸿), WANG Wei(王炜), LI Xinhua(李新华), CHEN Jiangping(陈江平). Review on Anti-Frost Technology Based on Microchannel Heat Exchanger[J]. J Shanghai Jiaotong Univ Sci, 2024, 29(2): 161-178.

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