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      目錄
      保溫材料與建筑節能
      首頁

      廣州地區低溫糧倉外墻保溫層最佳厚度研究

      作者:王海濤,曹薈娟,李彬,馮道廣

      關鍵字:廣州,地區,低溫,糧倉,外墻,保,溫層,最佳,厚度,

       
      (河南工業大學 土木工程學院,河南 鄭州  450001)
          摘要:采用全生命周期理論對廣州地區低溫糧倉外墻保溫層最佳厚度進行研究,給出了基于多層外墻非穩態傳熱模型的保溫層厚度優化方法和基于年度等效滿冷負荷運行小時數的保溫層厚度優化方法,確定了廣州地區低溫糧倉外墻保溫層最佳厚度。結果表明,2種外墻保溫層厚度優化方法的計算結果比較接近;不同朝向外墻保溫層的節能效益和最佳厚度不同,南向外墻的保溫層最佳厚度最??;不同外表面顏色外墻保溫層的節能效益和最佳厚度不同,深色外墻保溫層最佳厚度最大。
          關鍵詞:低溫糧倉;保溫層最佳厚度;生命周期成本;投資回收期
          中圖分類號:TU111.4        文獻標識碼:A        文章編號:1001-702X(2020)08-0128-06
       
      Optimization of insulation thickness for external walls of low temperature granary in Guangzhou region
      WANG Haitao,CAO Huijuan,LI Bin,FENG Daoguang
      (College of Civil Engineering,Henan University of Technology,Zhengzhou 450001,China)
          Abstract:Optimum insulation thickness of external walls of low temperature granary in Guangzhou region is studied in this study by applying the life-cycle cost analysis method. One optimum method of insulation thickness of external walls of low temperature granary is presented by using the transient heat transfer models of multi-layer wall. Another optimum method of insulation thickness of external walls of low temperature granary is proposed by using the annual equivalent full load cooling hours operation of system. The optimum insulation thickness of external walls of low temperature granary in Guangzhou region is determined. Research results show that the calculation results of the two optimum method are close to each other. The energy-saving benefits and optimal thickness of the external wall insulation layer are different in different orientations,and the smallest thickness appeared in south walls;the energy-saving benefits and the optimal thickness of the external wall insulation layer of different outer surface colors are different,and the biggest thickness appeared in darker external wall insulation layer.
          Key words:low temperature granary,optimum insulation thickness,life cycle cost,payback period
      贵州快三