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近年来,太阳能热水器已在国内广泛推广应用。实际使用证明,闷晒热水器成本低,易于安装,维护,使用方便,很受人们欢迎。闷晒热水器多种多样,由中国农业工程研究设计院设计,青岛市即墨县塑料制品厂生产的塑料盒式热水器便是其中的一种。见图1。热水器盒体采用无毒黑色低压聚乙烯塑压而成,此种材料耐老化(保证十年以上不发生脆、裂),无锈蚀,其主要特点:1.价格较低于同类产品,安装简单,运输方便。2.盒体上开口四周设有凹槽,前沿有凸台。既可安放玻璃做覆盖层,无玻璃时,又可用塑料压条将透明塑料薄膜绷紧固定于凹槽内,代替玻璃。经多次对比实验,其效果相差甚微。
In recent years, solar water heaters have been widely used in China. The actual use proves that the boring water heater is low in cost, easy to install, maintain, and easy to use, and is very popular with people. There are various kinds of stuffy water heaters. Designed by the China Agricultural Engineering Research and Design Institute, the plastic box-type water heater produced by Jimo County Plastic Products Factory in Qingdao is one of them. see picture 1. Water heater box body is made of non-toxic black low pressure polyethylene plastic pressure, this material is resistant to aging (guaranteed for more than ten years without brittle, crack), no rust, its main features: 1. Lower price than similar products, simple installation Convenient transportation. 2. There is a groove around the opening on the box body and a boss on the front edge. The glass can be used as a covering layer. When no glass is used, a transparent plastic film can be tightly fixed in the groove by using a plastic bead instead of glass. After many comparison experiments, the effects are very small.