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以中国农业大学的日光温室光辐射环境模型为基础,从温室的前屋面平均透光率、温室各表面指定时间段的平均辐射照度、单位温室长度内各表面累计的光辐射能量、单位温室长度内的累计光辐射总能量和直散光比例等5个方面评价了温室方位角对日光温室室内光照环境的影响。结果表明:在以正午时刻为对称的时间段内,随着温室方位角的变化,温室光环境的各项评价指标变化均不大。在正南方向,日光温室累计进光量最大,但只比最小值大0.45MJ。所以应根据当地实际生产情况调整日光温室方位角,若温室方位角南偏东,则应当早揭帘;若温室方位角南偏西,则应当晚揭帘。
Based on the solar greenhouse light radiation environment model of China Agricultural University, the average light transmittance of the greenhouse before the roof, the average radiation irradiance at each surface of the greenhouse, the cumulative radiation energy of each surface of the greenhouse, the unit length of the greenhouse The total energy of accumulated light radiation and the proportion of straight astigmatism were evaluated in five aspects of the impact of greenhouse azimuth on the indoor lighting environment of solar greenhouse. The results show that during the period of noon time is symmetrical, with the change of greenhouse azimuth, the evaluation indexes of greenhouse light environment are not changed greatly. In the direction of the south, the sunlight greenhouse has the largest amount of light, but only 0.45MJ more than the minimum. Therefore, we should adjust the azimuth of solar greenhouse according to the actual situation of the local area. If the greenhouse is south-easterly azimuth, the curtain should be opened as early as possible.