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            暖通空調雜志社>期刊目次>2021年>第6期

            夏熱冬冷地區不同構造形式外墻動態傳熱特性分析

            Analysis of dynamic heat transfer characteristics of external walls with different insulation forms in hot summer

            續璐[1][2][3] 丁勇[1][2][3]
            [1]重慶大學 [2] 國家級低碳綠色建筑國際聯合研究中心 [3]綠色建筑與人居環境 營造教育部國際合作聯合實驗室

            摘要:

            研究夏熱冬冷地區傳熱邊界條件下外墻的傳熱過程,可為該地區滿足不同動態熱環境需求的墻體熱工性能的設計提供參考。通過對該地區不同空調間歇運行模式下4種構造形式墻體的熱過程、瞬時與累計傳熱量進行量化分析,得出4種構造形式墻體的內表面溫度對室內空氣溫度變化的響應速率從快到慢依次為:內保溫墻體、夾心保溫墻體、自保溫墻體、外保溫墻體。經進一步分析得到:在空調間歇運行模式與連續運行模式下建筑熱過程特性不同,導致間歇運行模式下室內熱環境營造技術的節能路徑與適用范圍不同于連續運行模式;空調運行模式對空調運行時段通過外墻的瞬時傳熱量有顯著影響,在進行墻體傳熱特性分析時應充分考慮供暖或空調設備的使用模式。

            關鍵詞:夏熱冬冷地區,外墻構造形式,熱過程特性,空調運行模式,瞬時傳熱量

            Abstract:

             The study on heat transfer processes for external walls under boundary conditions in hot summer and cold winter zone can provide a reference for the thermal performance design of walls to meet the demands of different dynamic thermal environments in the region. Quantifies the thermal processes, instantaneous and cumulative heat transfer of four wall constructions under different air conditioning intermittent operation modes. The results show that the response rate of the internal wall surface temperature to the indoor air temperature for the internally insulated wall is the fastest, followed by the sandwich insulated wall, the self-insulated wall and the externally insulated wall. The characteristics of the building thermal process are different between the intermittent and continuous operation modes of the air conditioning, which leads to different energy saving paths and application scope of energy-efficient indoor thermal environment creating technologies in the intermittent operation mode from those in the continuous operation mode. The air conditioning operation mode has a significant effect on the instantaneous heat transfer through the external wall during the air conditioning operation period, so the operation mode of the heating or cooling equipment should be fully considered when analysing the heat transfer characteristics of the wall.

            Keywords:hotsummerandcoldwinterzone,externalwallinsulationform,thermalprocesscharacteristic,airconditioningoperationmode,instantaneousheattransfer

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