不同材质墙体日光温室内气温演变

Temperature Evolution in Solar Greenhouse with Different Materials Wall

为探寻不同材质墙体日光温室内气温的演变规律,找出其增温保温差异,以便有针对地进行温室种植和管理,本文通过在复合异质墙体日光温室和土墙日光温室内设立不同梯度和不同方位的监测点,连续监测两座温室内气温的全天变化,并采用MATLAB技术,展现不同天气条件下两座日光温室内气温的空间变化。结果表明:(1)晴天时,复合异质墙体日光温室内的升温和降温速率均较土墙日光温室大,阴天时,两座温室内的升温和降温速率基本相等,复合异质墙体日光温室较土墙日光温室有较强的增温保温性能;(2)复合异质墙体日光温室内的气温较同时刻土墙日光温室内气温高,晴天时,复合异质墙体日光温室内最高气温和最低气温比土墙日光温室内分别高3.0~8.0℃和1.0℃,阴天时则分别高2.0~3.0℃和3.0℃。

This article aimed to explore the law of temperature evolution and find the differences between temperature increase and heat preservation in solar greenhouses with different wall materials in order to carry out and manage greenhouse cultivation pertinently. The changes of temperature in two different materials wall solar greenhouses under different weather conditions were showed by the MATLAB programming. The sample temperature data were continuously monitored over a period of time with different gradients and orientations in both compound heterogeneous wall solar greenhouse and ordinary wall solar greenhouse. The results were as follows:(1) The temperature heating and cooling rate in compound heterogeneous wall greenhouse was faster than those of the ordinary wall greenhouse on sunny day but equal on cloudy day. It could be seen that the compound heterogeneous wall greenhouse possessed better warming performance and thermal insulating property than those of the ordinary wall greenhouse.(2) The temperature in greenhouse with compound heterogeneous wall was higher than that of the ordinary wall greenhouse, regardless of sunny day or cloudy day. On sunny day, the maximum temperature in the compound heterogeneous wall greenhouse was 3.0-8.0 ℃ higher than that in the ordinary wall greenhouse generally, and the minimum temperature in the compound heterogeneous wall greenhouse was 1.0 ℃ higher than that in the ordinary wall greenhouse. While on cloudy days, the temperature difference between maximum temperature and minimum temperature in two types of greenhouses was 2.0-3.0 ℃and 3.0 ℃, respectively.