Moist air condensation heat transfer enhancement via superhydrophobicity

Yu Lieh Wu, Jia Wei Zheng, M. Muneeshwaran, Kai Shing Yang, Chi Chuan Wang*


研究成果: Article同行評審

5 引文 斯高帕斯(Scopus)


The main objective of the present study is to experimentally investigate the moist air condensation behavior subject to hydrophilic and superhydrophobic surface with a much broader operating conditions such as different relative humidities (RH = 40 – 85%) and degree of subcooling (ΔTsub= 1 – 16 K). The flow visualization of condensation behavior showed that the main condensate departure mechanism of the hydrophilic surfaces is gravity-driven sliding. In contrast, the primary mechanisms for the superhydrophobic surfaces are direct jumping and bounced-jumping caused by the coalescence induced phenomena. The superhydrophobic surfaces yielded a maximum of 36% improvement in heat transfer coefficient at 85% relative humidity over the hydrophilic surfaces, while the enhancement is about 16% for 60% and 40% relative humidities. Similarly, the maximum heat transfer coefficient of 37 W m-2 K−1 is attained at the subcooling temperature of 16 K, and it is reduced to 31 W m-2 K−1 and 20 W m-2 K−1 respectively when the subcooling is reduced to 6 K and 1 K.

期刊International Journal of Heat and Mass Transfer
出版狀態Published - 1月 2022


深入研究「Moist air condensation heat transfer enhancement via superhydrophobicity」主題。共同形成了獨特的指紋。