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Buildings 2019, 9(1), 22; https://doi.org/10.3390/buildings9010022

Effects of Building Microclimate on the Thermal Environment of Traditional Japanese Houses during Hot-Humid Summer

1
Graduate School for International Development and Cooperation, Hiroshima University, Higashi-Hiroshima 739-8529, Japan
2
Kabul Engineering Faculty, Kabul University, 1006 Kabul, Afghanistan
3
Research Institute for Human Settlement and Housing, Ministry of Public Works and Housing, Bandung 40393, Indonesia
*
Author to whom correspondence should be addressed.
Received: 2 January 2019 / Revised: 10 January 2019 / Accepted: 11 January 2019 / Published: 15 January 2019
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Abstract

The purpose of this study was to investigate the effects of building microclimate on the indoor thermal environment of traditional Japanese houses, focusing especially on the shading effect of trees as well as the cooling effect of spraying water. Basically, the indoor thermal environment was found to follow the outdoor conditions due to the open-plan and lightweight wooden structure. Nevertheless, air temperatures of the living rooms in the two case study houses were lower than the corresponding outdoors by approximately 0.5 °C and 2 °C, respectively. It was found that the semi-outdoor spaces acted as thermal buffers for promoting cross-ventilation as well as pre-cooling to provide “warm but breezy” conditions to the surrounding indoor spaces. The results showed that the surface temperature of semi-outdoor spaces can be reduced by shading and water spraying, among which shading has prolonged effects and water spraying can reduce the surface temperature during peak hours and the following night. View Full-Text
Keywords: building microclimate; traditional house; semi-outdoor space; courtyard; thermal comfort; spraying water building microclimate; traditional house; semi-outdoor space; courtyard; thermal comfort; spraying water
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Hosham, A.F.; Kubota, T. Effects of Building Microclimate on the Thermal Environment of Traditional Japanese Houses during Hot-Humid Summer. Buildings 2019, 9, 22.

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