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本文以北京市某高校1间教室的1扇南向外窗的智能百叶为研究对象,采用现场测试与模拟计算的方法,针对晴天与多云天2种典型天气状况,在分析百叶倾角与室内得热量、室内照度的关系的基础上,研究智能百叶的调节对照明与空调能耗的影响。测试结果表明:1)当测试房间有直射光线进入时,室内得热量增加很明显;2)当测试房间无阳光直射进入时,室内得热量随百叶角度的减小而减少;3)进深1 m处直射光对照度的影响较大,但直射光对进深2 m以外的照度影响较小;4)有直射光时,照度在进深方向上的分布很不均匀,而没有直射光时,照度分布较均匀;5)没有直射光的时候,某些角度下照度也能满足要求。模拟计算结果表明:合理调节智能百叶后,多云天时节能率最高可达57.7%,晴天时节能率最高可达63.5%。百叶倾角为120°时,空调能耗与照明能耗之和相对于百叶全开时低60%。
In this paper, an intelligent blind with a south-facing window in a classroom in a university in Beijing is taken as an object of study. By means of on-site testing and simulation calculation, two typical weather conditions of sunny and cloudy days are analyzed. Heat, indoor illumination on the basis of the study on the regulation of intelligent blind lighting and air conditioning energy consumption. The test results show that: 1) when the test room has direct light entering, indoor heat gain is obvious; 2) When the test room without direct sunlight into the indoor heat with louvre angle decreases; 3) depth 1 m The influence of direct light on the illumination is greater, but the direct light has little effect on the illumination outside the depth of 2 m; 4) When there is direct light, the distribution of illuminance in the depth direction is very uneven, and when there is no direct light, the illumination distribution More uniform; 5) When there is no direct light, illumination can meet the requirements in some angles. The simulation results show that the energy saving rate can reach as high as 57.7% on cloudy days and 63.5% on sunny days when the intelligent blinds are reasonably adjusted. When the louver inclination is 120 °, the sum of the air conditioning energy consumption and the lighting energy consumption is 60% lower than when the louvers are fully open.