Total analysis of cooling effects of cross-ventilation affected by microclimate around a building

Akashi Mochida, Hiroshi Yoshino, Satoshi Miyauchi, Teruaki Mitamura

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

This study aims to develop a simulation system for evaluating the passive cooling effects, such as cross-ventilation, solar shading by trees, etc. Since the passive cooling effects are strongly affected by the spatial distributions of airflow, air temperature and radiative heat transports around a building, the microclimate around a building should be accurately predicted for this type of simulations. In this study, convective and radiative heat transports around buildings are analyzed by CFD (computational fluid dynamics) and radiation computations. Furthermore, the heat load calculation with the program "TRNSYS" was carried out, using the values of the cross-ventilation rates predicted by CFD computation and incoming solar radiation onto the building walls under the shade of trees obtained by the radiation computation as boundary conditions. Indoor velocity and indoor air temperature obtained by the simulation system developed here showed generally good agreement with measured data.

Original languageEnglish
Pages (from-to)371-382
Number of pages12
JournalSolar Energy
Volume80
Issue number4
DOIs
Publication statusPublished - 2006 Apr 1

Keywords

  • CFD
  • Cross-ventilation
  • Heat load calculation
  • Solar shading
  • Tree canopy

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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