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            暖通空調雜志社>期刊目次>2021年>第2期

            干熱干冷地區圍護結構熱工設計對內表面溫度及室內熱舒適的影響

            Influence of thermal properties on inner surface temperature and indoor thermal comfort in dry-hot and dry-cold zone

            陳潔 羅智星 楊柳
            西安建筑科技大學

            摘要:

            為了分析干熱干冷地區圍護結構熱工性能對室內熱環境的影響,采用物理環境實測結合動態模擬方法對比分析了2組墻體的保溫、蓄熱性能對內表面溫度的影響,并結合太陽輻射季節變化探究了太陽輻射吸收比對室內熱舒適的影響。研究表明:實測結果與模擬結果吻合較好,對于干熱干冷地區,提高圍護結構蓄熱性能能夠降低夏季內表面溫度,對冬季內表面溫度影響不大;提高圍護結構保溫性能可以提升冬季內表面溫度,同時引起夏季內表面溫度升高,對夏季降溫產生不利影響;圍護結構月平均得熱差值與太陽輻射月累計值顯著相關,降低外表面太陽輻射吸收比有利于該地區建筑全年熱環境的提升。

            關鍵詞:圍護結構,熱工設計,室內熱環境,內表面溫度,干熱干冷地區,輻射吸收比

            Abstract:

             In order to analyse the thermal performance of building envelope in the dry-hot and dry-cold zone, uses the physical environment measurement combined with dynamic simulation method to compare and analyse the influence of thermal insulation and thermal storage performances of two groups of walls on the inner surface temperature, and combining with the solar radiation seasonal changes, explores the influence of solar radiation absorption ratio on the indoor thermal comfort. The results show that the measured results are compliant to the simulation results. In dry-hot and dry-cold zone, improving the thermal storage performance of envelope can reduce the inner surface temperature in summer under the same thermal resistance condition, while the inner surface temperature in winter changes little. Under the same thermal storage condition, improving the insulation performance of envelope can improve the inner surface temperature in winter, and cause the inner surface temperature to rise in summer, which will have an adverse effect on the cooling in summer. There is a significant correlation between the mean monthly heat gain difference of building envelope and the monthly cumulative solar radiation. Reducing the solar radiation absorption ratio of outer surface is beneficial to the improvement of building thermal environment in a whole year.

            Keywords:buildingenvelope,thermaldesign,indoorthermalenvironment,innersurfacetemperature,dry-hotanddry-coldzone,radiationabsorptionratio

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