Research on the Influence of Coupled Heat and Moisture Transfer of Envelope on Indoor Environment of Near-zero Energy Building in Severe Cold Region

This electronic document is a “live” template and already defines the components of your paper [title, text, heads, etc.] in its style sheet.Near-zero energy building is a relatively new comprehensive building energy-saving technology, and its envelope is an important part that affects indoor thermal comfort. As a multi-layered porous system, the building envelope facilitates coupled heat and moisture transfer driven by indoor-outdoor temperature gradients and water vapor pressure differentials. When the pores of the material are filled with moist air, liquid water or ice, it will directly affect the material’s performance. Thermal performance. Moisture entering the room through the wall to form latent heat will also affect the internal environment of the building.However, conventional thermal modeling and energy consumption analyses often neglect moisture transfer dynamics.This paper uses WUFI-PLUS to simulate the near-zero energy consumption building model of Shenyang, a typical city in cold regions, compares and analyzes the influence of considering and not considering heat and moisture transfer on the indoor environment of the region. The results show that: it is found that the heat and humidity coupling effect of the building envelope has a significant impact on the indoor RH, which should be considered in the selection of air conditioning equipment, air conditioning system and environmental forecast analysis to ensure indoor comfort.