温室不同结构内墙体对其温效应的影响

Influence of different internal wall structure on temperature effect of greenhouse

以温室内墙体比表面积一致的凸式墙体(T)和凹式墙体(A)作为处理,以常规平面墙体作为对照(CK),研究温室不同结构内墙体对其温效应的影响。结果表明:采用凸式墙体或凹式墙体均可提高温室的温效应,使温室内地温、月平均日温、月平均夜温、月平均最低气温以及一天内的气温明显提高。随着墙体深度的增加,墙体的最低温度增加而最高温度降低,其中凸式墙体处理的12cm、18cm、24cm墙体深度最低温度和最高温度均表现最大,而平面墙体最小,显著低于凸式或凹式墙体。采用凸式墙体(T)或凹式墙体(A)均可有效提高温室的蓄热能力,其中凸式墙体(T)白天吸热最多、夜间放热最多,具有更好的蓄热性能。

This study used convex and concave wall of the same specific surface of internal wall structure as materials, and used the flat wall as the contrasting to research the influence of different internal wall structure on temperature effect of greenhouse. The results showed that the temperature effect of greenhouse would increase, as well as the soil temperature, the monthly mean day temperature, the monthly mean night temperature, the monthly mean lowest temperature and the day temperatures. With the depth of the wall increased, the minimum temperature of wall would increase and the highest temperature of wall would decrease, in our study, minimum temperature would favor more increase in convex wall, which dealt with 12cm, 18cm, and 24cm depth of maximum performance, however, maximum temperature would favor more decrease. In addition, convex and concave wall could effectively improve the greenhouse heat capacity, and convex wall, which had better thermal performance, could absorb more heat in day and release more heat in night.