保温幕延迟开启对温室内能量消耗和太阳辐射量影响的模拟

采用保温幕是一种温室节能的有效方法；在不增加成本的情况下，提高保温幕效能的方法不仅是在晚上而且在太阳辐射较低时都拉上保温幕。作者对两种不同性能的保温幕材料，从考虑节能效果和因太阳辐射量减少所引起的生产损失方面，研究了保温幕开启的最优方法，结果表明，温室保温幕的优化管理能明显提高经济效益。

A simulant study on influeuces of a delayed opening of thermal screens on the energy consumptionand the solar radiation level of a greenhouse.

Thermal screens offered an effective way of energy saving in the greenhouse. Oneway to increase the effect of such screens, without additional costs, was to keep the greenhousescreened not only during the night but also when the solar radiation was very low. The optimalway to control the opening was studied in this paper for two different types of screen materials,which both energy saving and production losses due to the reduction of the solar radiation weretaken into account. The results showed that the delayed opening of an opaque thermal screen sig-nificantly reduced the heat demand by 7%,but the solar radiation by only 0.8%and the heat de-mand reduction of a transparent screen was 15%while the solar radiation loss remained at 1.8%.