日光温室外保温蜂窝结构覆盖材料的研究

Study on Thermal Insulation Covering Materials ofHoneycomb Plastic Sheet

摘要: 总结了现行日光温室夜间使用的外保温覆盖材料种类，针对传统保温材料存在的问题，提出采用蜂窝塑膜作为日光温室的一种保温覆盖材料。覆盖层总传热系数的理论计算表明，铝箔蜂窝结构（ＡＨＰＳ）覆盖层传热系数比无铝箔蜂窝结构（ＨＰＳ）覆盖层下降３５％～７０％，并且铝箔朝上放置比铝箔朝下放置时传热系数小１０％。选用ＰＥＡＨＰＳ覆盖层可比相应的ＰＶＣＡＨＰＳ覆盖层传热系数小１０％～２５％。

Abstract: Different kinds of thermal insulation materials used in solar greenhouses were summarized. In accordance with the present problems of traditional thermal insulation materials, honeycomb plastic sheet was proposed to be a new type covering of solar greenhouses. The theoretical calculation of the heat transfer coefficient (U) of the covering sheets showed that the U of aluminized honeycomb plastic sheet (AHPS) was 35 %～70 % lower than that of honeycomb plastic sheet (HPS). The U was 10 % lower when aluminium foil faced upwards than downwards. PE AHPS was better than PVC AHPS when isolation was concerned.