SUMMER THERMAL ENVIRONMENT IN TRADITIONAL VERNACULAR HOUSES IN SEVERAL AREAS OF NEPAL

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  • ネパール各地の伝統的住宅における夏季の温熱環境
  • ネパール カクチ ノ デントウテキ ジュウタク ニ オケル カキ ノ オンネツ カンキョウ

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Abstract

For the purpose of evaluation and improvement of the thermal environment in traditional vernacular houses of the Banke, Bhaktapur, Dhading, Kaski and Solukhumbu districts of Nepal, the summer thermal indoor environment was measured and investigated in regards to : 1) the relationship between indoor and outdoor climate and 2) in comparison with existing studies. The thermal environments of the houses investigated are as followings, 1) residents mitigated the thermal environment by moving in indoor, semi-open and outdoor spaces, 2) daytime indoor air temperature was 0.7 to 4.6K less than the outdoor air temperature, 3) the thermal environment of the semi-open spaces was better than those of the indoor, 4) a cool radiation and air moisture control effect was found in houses with earthen floors, stone walls, brick walls and mud vessels, 5) the thermal environment of traditional houses was better than new type of houses, 6) much heat insulation was found in houses with grass, brick and wooden roofs, 7) a cool radiation effect was found in houses with grass, brick, stone, tile, cement and corrugated iron roofs, 8)the indoor and outdoor temperature difference was small in low altitude locations and large in high altitude locations, and 9) compared with existing studies, Nepalese and Japanese houses had comparable indoor and outdoor temperature differences in summer(1.2K) and in winter (2.2K).

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