Simulation Research on the Effect of Coupled Heat and Moisture Transfer on the Energy Consumption and Indoor Environment of Public Buildings

Shui Yu, Yumeng Cui, Yifei Shao and Fuhong Han
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Shui Yu: School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
Yumeng Cui: State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510641, China
Yifei Shao: School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China
Fuhong Han: School of Municipal and Environmental Engineering, Shenyang Jianzhu University, Shenyang 110168, China

Energies, 2019, vol. 12, issue 1, 1-17

Abstract: A building envelope is a multi-layer porous structure. It transfers heat and moisture to balance the indoor and outdoor temperature difference and water vapor partial pressure difference. This is a typical coupled heat and moisture migration process. When the space is filled with moist air, water or ice, it will directly affect the thermal properties of the material. With respect to moisture coming through the wall into the indoor building, it will also affect the indoor environment and the energy consumption due to the formation of latent heat. However, the moisture transfer process in the building envelopes is not taken into account in the current conventional thermal calculation and energy consumption analysis. This paper analyzes the indoor thermal and humidity environment and building energy consumption of typical cities in Harbin, Shenyang, Beijing, Shanghai, and Guangzhou. The results show that it is obvious that the coupled heat and moisture transfer in the building envelopes has an impact on the annual cooling and heating energy consumption, the total energy consumption, and the indoor thermal and humidity environment. The geographical location of buildings ranging from north to south influences the effect of coupled heat and moisture transfer on the annual energy consumption of the building, moving from positive to negative. It is suggested that the additional coefficient of the coupled thermal and moisture method can effectively correct the existing energy consumption calculation results, which do not take the consumption from the coupled heat and moisture in the building envelopes into account.

Keywords: coupled heat and moisture transfer; HAM model; energy consumption analysis; heat and humidity environment analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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