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我国西北地区地域广阔,沙土资源丰富,该试验设计了一种新型日光温室后墙结构,以固化沙为温室的主要墙体材料,墙体中分层安装有带通道的混凝土预制板,白天通过风机将温室内热空气主动蓄积到墙体内,夜晚将墙体内热空气主动释放到温室内,从而增强温室的保温性能,并对其温光性能进行了试验分析。选取冬季典型晴天(2016-01-24、2016-02-10)、阴天(2016-01-16、2016-02-20)和雪天(2015-12-11)的试验数据,分析了固化沙主动蓄热后墙日光温室与普通苯板砖墙日光温室室内光照度、温度及墙体内部温度的差别。结果表明:固化沙主动蓄热后墙日光温室与普通苯板砖墙日光温室相比,光照度没有明显差异;室内平均温度在典型晴天提高了1.7℃,典型阴天提高了2.5℃,典型雪天提高了2.4℃。固化沙主动蓄热后墙日光温室墙体内部温度恒定区域处于740~1 000mm、蓄热层厚度超过740mm,其中固化沙蓄热厚度超过了620mm、蓄热层厚度和蓄热能力均大于普通苯板砖墙,表明该温室具有良好的保温效果,适合进一步在西北多沙土地区推广。
Northwestern China has a vast territory and rich sand resources. A new type of solar greenhouse rear wall structure is designed to cure sand as the main wall material of the greenhouse. The concrete slab with channels is layered in the wall and passes through the wall during the day The fan automatically accumulates the hot air in the greenhouse into the wall, and at the night, actively releases the hot air in the wall into the greenhouse so as to enhance the heat insulation performance of the greenhouse and test the temperature and light performance of the fan. Select the typical winter sunny (2016-01-24,2016-02-10), cloudy (2016-01-16,2016-02-20) and snow (2015-12-11) test data, analysis of the curing Sand active heat storage wall sunlight greenhouse and ordinary benzene brick wall sunlight greenhouse indoor illumination, temperature and the difference between the internal wall temperature. The results showed that there was no significant difference in illuminance between solid sand active heat-retaining rear wall solar greenhouse and ordinary benzene wall brick greenhouse. Average indoor temperature increased by 1.7 ℃ in typical sunny days and 2.5 ℃ in typical cloudy days, Increased by 2.4 ℃. The inner temperature of the solar greenhouse wall with active sand of active heat storage is in the range of 740-1000mm and the thickness of heat storage layer is more than 740mm. The heat storage thickness of solidified sand is over 620mm, the thickness of heat storage layer and heat storage capacity are greater than normal benzene Brick wall, indicating that the greenhouse has a good thermal insulation effect, suitable for further promotion in the Northwest sandy soil.