[Paper Available for Download] SPACECOOL and Ritsumeikan University Announce Joint Research Findings on Building Energy Efficiency
On September 10, 2025, at the Annual Meeting of the Architectural Institute of Japan (Kyushu), SPACECOOL INC. and Ritsumeikan University presented the results of their joint research on the energy efficiency of applying the radiative cooling material SPACECOOL to buildings.
The research paper is available for download at the link below.
This research has been conducted in collaboration with Professor Tomoyuki Chikamoto and Associate Professor Myonghyang Lee of the Department of Architecture and Urban Design, College of Science and Engineering, Ritsumeikan University, with the aim of scientifically visualizing the energy efficiency of buildings.
Related press release https://spacecool.jp/en/news/20250530/
Summary of Findings
1. By installing SPACECOOL on the roof of a typical office building (10,000 m², 7 stories), a reduction of up to 7% in cooling load is expected.
2. CFD analysis(*) of the thermal environment inside a membrane tent, validated with measured data, confirmed relatively good accuracy when radiation was considered in the thermal boundary conditions.
Looking ahead, these findings will be applied to the analysis of the Gas Pavilion at Expo 2025 Osaka, Kansai, where further evaluation of the thermal environment and energy performance of radiative cooling sheets will be conducted.
(*) CFD Analysis: A computational method based on fluid dynamics, used to analyze airflow, heat transfer, and related phenomena.
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