Experimental Study On Daylightling Of Active Sunlight Storage Solar Greenhouse In Northwest China

With the development of facility agriculture in China,in recent years,the area of agricultural production facilities with high input and high output has been increasing in Northwest china.The northwest region is vast,with plenty of sunshine,suitable for the growth of crops.But the winter sunshine time is not enough,the low night temperature in greenhouse common requires a lot of night light,heating in winter.With the development of the greenhouse,the active lighting greenhouse is further improved in the traditional solar greenhouse.In the case of winter saving costs and resources,crop growth can meet the needs of light and temperature.According to the actual situation of the northwest region,select Shaanxi,Qinghai,Xining,Shanxi,Linfen,Shaanxi,the agricultural park of the solar greenhouse as the experimental object of.Through the PDRLAB environmental monitoring equipment of different greenhouse light intensity,temperature,monitoring,analysis results show that the active heat storage of solar greenhouse lighting light intensity is about 9% higher than ordinary solar greenhouse,the lighting rate reached 59%.The indoor temperature of the solar greenhouse with active lighting is more than 2 DEG C,which is higher than that of other solar greenhouses.In Yangling area,the maximum intensity of light intensity is 59%,the lowest value is about 4134 lux,the light transmittance is highest,the lowest value is 50%,and the lowest value is 25947 lux.The maximum intensity of illumination in the solar greenhouse is about21108 lux,the lowest value is about 2893 lux,the maximum transmittance is 48%,the lowest value is 35%.The light intensity of the common solar greenhouse is about 22567 lux,the lowest value is about 3733 lux,the highest transmittance is 51%,the light transmittance is the lowest value of 45%.Comparison of light intensity in sunny days in Qinghai.The maximum intensity of illumination in the solar greenhouse is about 21700 lux,the lowest value is about 3943 lux,the maximum transmittance is 58%,and the lowest value is about 47%.The maximum intensity of illumination in the solar greenhouse is about 17589 lux,the lowest value is about 3145 lux,the highest transmittance is 47%,the transmittance is the lowest of 37%.The highest intensity of illumination in ordinary sunlight greenhouse is about 18552 lux,the lowest value is 3364 lux,the highest transmittance is 49%,the lowest value is 40%.Light experiment in Linfen sunny agricultural park in Shanxi.The maximum light intensity of active solar greenhouse is about 26325 lux,the lowest value is about 4280 lux,the maximum transmittance is 61%,the lowest value is 52%.The maximum intensity of illumination in the solar photovoltaic greenhouse is about 17725 lux,the lowest value is about 3334 lux,the maximum transmittance is 41%,the light transmittance is the lowest value of 39%.The light intensity of the common solar greenhouse is about 18484 lux,the lowest value is about 3454 lux,the maximum transmittance is 45%,the lowest value is40%.Sunlight greenhouse experiment of agricultural park in Shaanxi,Hanzhoung.The maximum light intensity of active solar greenhouse is about 26241 lux,the lowest value is about 3227 lux,the maximum transmittance is 59%,the light transmittance is the lowest value of 51%.The maximum intensity of illumination in the solar photovoltaic greenhouse is about 21873 lux,the lowest value is about 2368 lux,the maximum transmittance is 49%,the light transmittance is the lowest value of 37%.The light intensity of the common solar greenhouse is about 23269 lux,the lowest value is about 2745 lux,the highest transmittance is 52%,the light transmittance is the lowest value of 43%.Active light storage solar greenhouse is through the change of the angle of the lighting surface,with the change of the height angle of the sun,can have different lighting angle,the light transmittance in winter is significantly improved.In the northwest region,the active lighting of solar greenhouse lighting than other solar greenhouses,lighting effect increased by about 9%.In the winter production process,the active lighting and heat storage solar greenhouse,can meet the needs of winter lighting.