不同墙体日光温室保温性能研究

为了确定合理的日光温室后墙材料与结构,2012年分别在睢宁、赣榆建造了不同墙体(普通空心砖墙、复合异质墙体、夹芯板墙体)构型的日光温室,并研究了不同墙体日光温室的增温、保温性能。结果表明:普通空心砖墙蓄热能力强,夜间保温效果好,但白天增温慢;夹芯板墙体热阻值大,白天升温较快,利于提高温室的最高温度,但夜间放热能力较弱,不利于夜间保温;复合异质墙体具有较好的热阻和蓄热能力,增温、保温性最佳。为使日光温室冬季获得较好增温保温效果,从节约成本方面考虑,建议选择1 cm内粉+24 cm空心砖+24 cm空心砖+10 cm聚苯乙烯泡沫塑料板+1 cm外粉为墙体的温室。

Effects of Different Walls on Thermal Insulation Properties of Solar Greenhouse

In order to choose reasonable material and structure for the back wall of solar greenhouse,dif-ferent walls,such as normal hollow brick wall,complex heterogeneous wall,and blockboard wall,were used to construct solar greenhouse in Suining and Ganyu County in 2012.And their warming and thermal insulation properties were studied.The results showed that the normal hollow brick wall had strong heat storage capacity, which existed good thermal insulation effect during the night,but it warmed up slowly during the day.The blockboard wall had bigger thermal resistance value and warmed up quickly during the day,which could boost the highest temperature in solar greenhouse,but it had low exothermal capacity,which existed poor thermal insulation effect during the night.The complex heterogeneous wall had good thermal resistance and heat stor-age capacities,which had the best warming and thermal insulation property.In order to obtain better warming and thermal insulation effects in winter and save cost,the wall with 1 cm inner calcimine,24 cm hollow brick,24 cm hollow brick,10 cm protection layer which was made of polystyrene foam board and 1 cm outer calcimine was the best choice.