Integration of moisture effects into urban building energy modeling

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Xiaoyu Wang - , Tongji University, Ministry of Education of the People's Republic of China (MOE) (Autor:in)
  • Pengyu Jie - , Tongji University, Ministry of Education of the People's Republic of China (MOE) (Autor:in)
  • Ke Zhu - , Tongji University, Ministry of Education of the People's Republic of China (MOE) (Autor:in)
  • John Grunewald - , Professur für Bauphysik (Autor:in)
  • Xiaoping Xie - , Institut für Bauklimatik (IBK) (Autor:in)
  • Xing Jin - , Southeast University, Nanjing (Autor:in)
  • Xin Zhou - , Southeast University, Nanjing (Autor:in)
  • Xing Shi - , Tongji University, Ministry of Education of the People's Republic of China (MOE) (Autor:in)

Abstract

To address the limitations of current urban building energy modeling (UBEM), which often neglects moisture effects, we developed a comprehensive roadmap for modeling urban heat and moisture flows. This effort included developing an urban-scale whole-building heat and moisture transfer (HAMT) model that considers wind-driven rain, integrated with a microclimate model known as Urban Weather Generator (UWG). The proposed model was validated through analytical and comparative cases of whole-building hygrothermal performance analyses from the Annex 41 Project. The integrated whole-building and microclimate HAMT models were applied to a real urban building to assess the impact of moisture on annual energy predictions in a hot-humid region of Shanghai. The results show that incorporating moisture effects into the UBEM increases the annual cooling energy demand by 22.11% (5.92% owing to latent heat loads) and the annual heating loads by 6.06%, resulting in a 19.73% increase in the total annual energy loads. Additionally, the outer wall surface temperature decreases during and after rainfall events, with maximum decreases of 3.23 °C in winter and 8.80 °C in summer. Therefore, integrating moisture effects into UBEM is crucial, particularly in humid regions.

Details

OriginalspracheEnglisch
FachzeitschriftBuilding simulation
PublikationsstatusVeröffentlicht - 25 Jan. 2025
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-9524-3560/work/176862566
unpaywall 10.1007/s12273-025-1226-x