Energy performance evaluation of outside sun shadings using radiance and newhasp

Chikako Ohki, Toshihide Okamoto, Hiroshi Ohga, Nozomu Yoshizawa

Research output: Contribution to journalArticle

1 Citation (Scopus)


By daylight harvesting, the annual electric power usage of luminaires can be reduced, on the other hand, window solar heat gain increases. In recently, as the demand for environmentally conscious buildings has increased, comprehensive evaluation of solar heat gain and natural lighting for facades equipped with various outside sun shading is desired. Therefore, by combining the calculation results of Radiance using BIM's model with NewHASP, and connecting a heat gain calculation result with LCEM to develop a simulation model that accurately evaluates electric power usage, we made it possible to investigate the energy performance of outside sun shading in detail.

Original languageEnglish
Pages (from-to)861-870
Number of pages10
JournalJournal of Environmental Engineering (Japan)
Issue number753
Publication statusPublished - Nov 2018



  • Energy Simulation
  • NewHASP
  • Outside Sun Shading
  • Radiance
  • Thermal Load Calculation

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