solar water heater

Description

solar water hwater 1、Whole glass vacuum tubes adopt super hard borax. 2、Absorb rate: about *3%, thermal radiation rate: about 6%(**0 ℃) 3、Temperature when exposed to sun without water:**0℃ï&frac*4;Œ2.5hours to boiling if using single tube. 5、If you use electrical appliances to aid heating, to swithch off the power supple before boiling 6、To test the water temperature before using, in order to avoid scalding. The installation and maintain is very easy. It&#**9;s very suitable for family use, and it&#**9;s popular in Asia, Africa, torrid area etc.