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腐蚀严重地影响着太阳能热水器的寿命和使用价值。为了防腐,工业发达国家一般采用不锈钢、铜或其他耐蚀金属或合金作为制造热水器的材料。而我国一般都用普通钢制造热水器,腐蚀相当严重,是推广应用太阳能热水器的主要障碍之一。 热水器的主要部件是集热器。为了解决扁盒式集热器的防腐问题,我们用热镀锌方法进行了试验,取得了良好的效果。
Corrosion seriously affects the life and value of solar water heaters. In order to prevent corrosion, industrialized countries generally use stainless steel, copper or other corrosion-resistant metal or alloy as the material for the manufacture of water heaters. In our country, ordinary water heaters are made of ordinary steel, and the corrosion is rather serious. It is one of the major obstacles to promote the application of solar water heaters. The main part of the water heater is the collector. In order to solve the anti-corrosion of flat box collectors, we conducted experiments with hot-dip galvanizing method and achieved good results.