温室内辐射空间分布模型研究

摘要

参考太阳天文辐射量的计算方法及辐射在山地上重新分配后的空间分布模型，研究北方斜面日光温室内太阳辐射的空间分布。本设计以日光温室西墙与北墙相交的下基点为原点，建立空间坐标系，模拟温室东、西山墙及采光屋面的函数曲线，然后通过计算日光温室东、西、北山墙对日光温室内任一点的可蔽视角，结合日光温室所在地纬度、坡面、温室结构等参数得到该点日出日没时刻，再根据所求时刻的时角判断该点是否处在太阳光的直接照射下，进一步考虑不同覆盖薄膜对辐射的透过率，可近似的用该点某一时刻各方位角的仰角占球面全方位角仰角的百分比来计算该点此刻接受到的散射辐射量及总辐射量，从而可模拟出温室内任意一点在任一时刻的辐射量模型。%Taking solar astronomy,the calculation of radiation and radiation in the mountains after the re-distribution of the spatial distribution model as reference resources,spatial distribution of solar radiation in greenhouse were studied.The design taking north wall point and western wall point intersection as origin,established spatial coordinates,simulated function curve of gable and roof of greenhouse.The design taking north wall point and western wall point intersection as origin,established spatial coordinates,simulated function curve of gable and roof of greenhouse.Combined with latitude,slope and greenhouse structure,sunrise and sunset at any point in the greenhouse were got.Considering the transmittance of the radiation,the radiation and the total radiation were calculated,the radiation model of any point in the greenhouse at any time were simulated.