standard

47*1500mm

58*1800mm

47*1800mm

70*2100mm

vacuum tube show(solar water heater parts):

Common vacuum tubes

Copper tube in the vacuum tube

three target high vacuum tube(red)

different between  common vacuum tube and copper heat hipe:

1).higher heating efficiency:

Heat  transferring can be started quickly even under cloudy day. It can work normally even -30 below degree. As no water in the vacuum tube, it can effectively prevent lowing of heating efficiency due to frost cracking or scaling.

2). Each individual tube can work independently, and the whole machine can still work if individual tube is damaged. The service life of the heat pipe can be longer than 15 years.

3). The unique connection between the heat pipe and the vacuum tube can ensure both sealing and replace of damaged glass vacuum tube.