Heat and Moisture Transfer in a Rectangular Cavity Partially Filled with Hygroscopic Porous Media

Kaimin YangSchool of Thermal Engineering, Shandong Jianzhu University, Jinan, China; ;Key Laboratory of Renewable Energy Technologies for Buildings, Ministry of Education, Jinan, China; ;Shandong Key Laboratory of Renewable Energy Technologies for Buildings, Jinan, ChinaView further author information

Yuancheng WangSchool of Thermal Engineering, Shandong Jianzhu University, Jinan, China; ;Key Laboratory of Renewable Energy Technologies for Buildings, Ministry of Education, Jinan, China; ;Shandong Key Laboratory of Renewable Energy Technologies for Buildings, Jinan, ChinaCorrespondence[email protected]
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Yudong MaoSchool of Thermal Engineering, Shandong Jianzhu University, Jinan, China; ;Key Laboratory of Renewable Energy Technologies for Buildings, Ministry of Education, Jinan, China; ;Shandong Key Laboratory of Renewable Energy Technologies for Buildings, Jinan, ChinaView further author information

Wenke ZhangSchool of Thermal Engineering, Shandong Jianzhu University, Jinan, China; ;Key Laboratory of Renewable Energy Technologies for Buildings, Ministry of Education, Jinan, China; ;Shandong Key Laboratory of Renewable Energy Technologies for Buildings, Jinan, ChinaView further author information

Abstract

This work deals with turbulent natural convection heat and moisture transfer with thermal radiation in a rectangular cavity partially filled with hygroscopic porous medium. The governing equations for the momentum and heat transfer in both free fluid and hygroscopic porous media and moisture content transfer in hygroscopic porous medium were solved by the finite element method. Comparisons with experimental and numerical results in the literature have been carried out. Effects of thermal radiation, Rayleigh number on natural convection and heat transfer in both free fluid and porous medium and moisture content transfer in porous medium were analyzed. It was found that surface thermal radiation can significantly change the temperature and moisture content fields in the regions of free flow and hygroscopic porous medium. With the increase in Rayleigh number, the temperature of porous medium at the interface increased slightly, and the magnitude of moisture change becomes smaller.

Additional information

Funding

This work was supported by the National Key Research and Development Program (2016YFD0400104, 2016YFD0401002) and Shandong Provincial Natural Science Foundation of China (ZR2016EEB15, ZR2016EEB28).

Notes on contributors

Kaimin Yang

Kaimin Yang received his Ph.D. in Thermal Engineering from Shandong University in 2013. There he investigated the phase change phenomenon in heat pipes. Now he is a teacher and researcher at Shandong Jianzhu University, and he focuses on the heat and mass transfer in the porous media, especially the heat and moisture coupling transfer process in grain bulks during storage.

Yuancheng Wang

Yuancheng Wang received his Ph.D. from University of Shanghai for Science and Technology. He is now a professor at Shandong Jianzhu University and he conducts research in areas such as numerical simulation of convective diffusion in urban air pollutants, building indoor and outdoor wind environment and heat and mass transfer in biological porous medium. His research has resulted in over 70 archival journal and conference publications.

Yudong Mao

Yudong Mao received his bachelors in School of Energy and Power Engineering from Shandong University in 2008. He received his Ph.D. in Power Engineering and Engineering Thermophysics from the same university in 2015. He is now a lecturer at Shandong Jianzhu University, and his research is on micro/nano-scales heat transfer.

Wenke Zhang

Wenke Zhang is a lecturer at the School of Thermal Engineering of Shandong Jianzhu University. His main research areas include heat transfer and ground source heat pump. He obtained the Ph.D. degree from The Hong Kong Polytechnic University. He has published more than 20 journal publications and has been in charge of National and Provincial scientific research projects.

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