Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Performance evaluation of passive hygrothermal control for houses using a thermodynamic HAM model

Haksung Lee 1, Akihito Ozaki 2
1 Department of Architecture, Chungbuk National University, Cheongju, Republic of Korea
2 Kyushu University, Japan

Abstract: An intelligent housing envelope system that was capable of passive dehumidification and radiative cooling in summer, solar heat collection, and humidity control in winter, was developed (PDSC system: Passive dehumidification and solar collection system). In this study, a numerical simulation using a thermodynamic HAM (Heat, Air, and Moisture) model was performed to reproduce a house to which the PDSC system was applied, and the performance of the system was investigated. The changes in temperature, relative humidity, absolute humidity, and heat loads, depending on the different envelope compositions, such as a non-permeable envelope, a moisture-permeable envelope (high moisture capacity and low moisture capacity), and the PDSC system were compared and examined. The humidity control ability of the moisture-permeable envelope with high moisture capacity and excellent dehumidification performance of the PDSC system were confirmed.
Keywords: Passive dehumidification, Radiative cooling, Humidity control, Solar heat collection, Latent heat reduction
Pages: 2360 - 2367