太阳能加相变储能材料在北方日光温室大棚中应用的增温效果的研究

Study on Heating Effect of Solar Energy Plus Phase Change Energy Storage Materials Applied in Northern Solar Greenhouse

我国北方农村大棚冬季日间光照充足,大棚通过接受太阳能,内部温度足以达到甚至超过植物生长所需的适宜温度。而夜间室外温度较低,大棚内外温差大,降温迅速,需要采取被动的覆膜保温或者增加能耗的主动保温措施。本文设计并开展了一个利用相变储能材料改善这种现象的缩尺存实验。本实验中的相变储能装置通过日间吸热,夜间放热的方式,能够较大程度的提高温室大棚夜间的保温能力,降低保温能耗的结论。该研究为大棚夜间增温和自然资源的合理分配与应用提供了新的方法。

In order to cope with sufficient daytime sunlight in rural greenhouses in northern China in winter,the internal temperature of the greenhouses is enough to reach or even exceed the appropriate temperature for plant growth by receiving solar energy.At night,the outdoor temperature is low,the temperature difference between inside and outside the greenhouse is large,and the temperature drops rapidly.Passive film insulation or active insulation measures to increase energy consumption need to be taken.We designed and carried out a scaled storage experiment to ameliorate this phenomenon by using phase change energy storage materials.It is concluded that the phase-change energy storage device in this experiment can greatly improve the thermal insulation capacity of greenhouse at night and reduce the energy consumption of thermal insulation through the way of absorbing heat during the day and releasing heat at night.This study provides a new method for warming greenhouses at night and rational allocation and application of natural resources.