Numerical simulation on hygrothermal environment of whole buildings based on detailed building physics on heat and moisture transfer and airflow

M. Lee, A. Ozaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many simulation software to predict thermal environment of buildings, such as temperature, humidity, heating and cooling load of building spaces, have been developed according to the development concept such as calculation accuracy, calculation speed, user-friendliness. However, most of them do not take into account moisture transfer in wall assemblies. Humidity calculation in most software is simply affected by ventilation and focuses on just the building spaces. A Heat, Air and Moisture (HAM) simulation software called THERB has been developed for the purpose of estimating the hygrothermal environment within buildings. This software has complete HAM features including principles of moisture transfer within walls. In this paper, the prominent features of the THERB are highlighted. Then the accuracy is verified through the comparison of calculation and monitoring results of a residential building. The difference of hygrothermal environment is clarified based whether or not moisture sorption and desorption of walls are incorporated. Furthermore, Sensitive analysis utilizing THERB is performed with the differences of calculation models on heat transfer and incident solar radiation into indoor surfaces.

Original languageEnglish
Title of host publication7th International Symposium on Heating, Ventilating and Air Conditioning - Proceedings of ISHVAC 2011
Pages1087-1093
Number of pages7
Publication statusPublished - Dec 1 2011
Externally publishedYes
Event7th International Symposium on Heating, Ventilating and Air Conditioning, ISHVAC 2011 - Shanghai, China
Duration: Nov 6 2011Nov 9 2011

Publication series

Name7th International Symposium on Heating, Ventilating and Air Conditioning - Proceedings of ISHVAC 2011
Volume4

Other

Other7th International Symposium on Heating, Ventilating and Air Conditioning, ISHVAC 2011
CountryChina
CityShanghai
Period11/6/1111/9/11

All Science Journal Classification (ASJC) codes

  • Environmental Science (miscellaneous)

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  • Cite this

    Lee, M., & Ozaki, A. (2011). Numerical simulation on hygrothermal environment of whole buildings based on detailed building physics on heat and moisture transfer and airflow. In 7th International Symposium on Heating, Ventilating and Air Conditioning - Proceedings of ISHVAC 2011 (pp. 1087-1093). (7th International Symposium on Heating, Ventilating and Air Conditioning - Proceedings of ISHVAC 2011; Vol. 4).