Coupling Heat and Mass Transfer Performance between Hot Wind and Electrode Coatings

CHANG Zhu; WANG Jiajun; MA Hongqiang

doi:10.19554/j.cnki.1001-3563.2026.07.036

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Packaging Engineering ›› 2026, Vol. 47 ›› Issue (7) : 315-326. DOI: 10.19554/j.cnki.1001-3563.2026.07.036

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Coupling Heat and Mass Transfer Performance between Hot Wind and Electrode Coatings

CHANG Zhu¹, WANG Jiajun², MA Hongqiang^2,*

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Abstract

The work aims to improve the coupling drying performance of wet coatings of electrodes. An analysis model of drying performance was established for wet coatings in convective drying process based on the dynamic mesh method and the coupling theory of temperature and humidity fields and the model was reliable with the maximum error less than 14.7% through comparison to experimental data of literature. Subsequently, the coupling drying performance was analyzed under different control conditions. Finally, the distributions of heat flux and mass transfer coefficient were further analyzed under different control conditions. The heat flux of wet coatings increased with the increase of velocity and temperature and the decrease of relative humidity. The net heat flux changed irregularly because its value was related to convective heat transfer and evaporation processes. Based on this model, the change of temperature had the greatest impact on the heat flux of wet coatings (it was equal to the effect on temperature of wet coatings), with this variation as 14.5%. The heat flux and mass transfer coefficient of wet coatings increased with the increase of velocity at the wind knives, and the coupling drying process was the most significant for local region directly below the wind knives. It is recommended to adjust the temperature and velocity to meet the drying requirements for the temperature of wet coatings. The above research can provide theoretical basis for improvement of coupling drying performance for wet coatings.

Key words

heat and mass transfer / drying performance / coupling drying model / dynamic mesh method / convective drying

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CHANG Zhu, WANG Jiajun, MA Hongqiang. Coupling Heat and Mass Transfer Performance between Hot Wind and Electrode Coatings[J]. Packaging Engineering. 2026, 47(7): 315-326 https://doi.org/10.19554/j.cnki.1001-3563.2026.07.036

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