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            暖通空調雜志社>期刊目次>2021年>第3期

            外窗遮陽系統太陽得熱系數及其對空調負荷的影響

            Study on solar heat gain coefficient and air conditioning load of external window shading systems

            劉衍 趙歡 張向榮 張辰 楊柳
            西部綠色建筑國家重點實驗室 西安建筑科技大學

            摘要:

            為研究外窗遮陽系統的太陽得熱系數全年變化規律及外窗遮陽系統對空調負荷的影響,以南京市為例,對外窗遮陽系統的太陽得熱系數在全年逐月的變化規律、3種外窗遮陽系統在不同朝向方位角上的年太陽得熱系數及外窗遮陽系統對房間空調負荷的影響等進行了研究。結果表明:南向雙玻中空外窗遮陽系統全年的月太陽得熱系數相差最大達到0.10,且夏季太陽得熱系數比冬季低13%;采用中置卷簾遮陽和外置水平百葉遮陽的外窗系統空調節能效果較好;此外,外窗遮陽系統的年太陽得熱系數與空調全年累計負荷存在正相關關系,且采用中置卷簾和內置百葉遮陽的南向外窗,其全年累計負荷降低率大于采用相同遮陽形式的西向外窗。

            關鍵詞:太陽得熱系數,外窗遮陽系統,空調負荷,累計負荷降低率,數值模擬

            Abstract:

             In order to study the variation of solar heat gain coefficient(SHGC)in the whole year and the influence of the window shading system on the air conditioning load, taking Nanjing as an example, studies the change rule of SHGC of the window in 12 months of the year, the annual SHGC of three kinds of external window shading systems in different orientation angles, and the influence of window shading systems on the room air conditioning load. The research results show that the difference of monthly SHGC of the south facing window is up to 0.10, and the SHGC in summer is 13% lower than that in winter. The air conditioning energy saving effect of the external window system with central roller shutter and external horizontal shutter is better. In addition, the annual SHGC of the window shading system has a positive correlation with the total energy consumption of air conditioning, and the annual cumulative load reduction rate of the air conditioning of the south facing window with central roller shutter and built-in blinds is higher than that of the west facing window with the same sunshade.

            Keywords:solarheatgaincoefficient(SHGC),windowshadingsystem,airconditioningload,cumulativeloadreductionrate,numericalsimulation

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