Evacuated Tubes

Listing ID #1602876

We are offering evacuated tubes.
Specifications
all-glass evacuated solar collector vaccum tube (sfva5818) with high efficiency.
All-glass evacuated solar collector vaccum tube (sfva4715) with high efficiency.
1) the tube structure is between all-glass evacuated tube and metal-glass evacuated tube with heat pipes, 58mm(d)x1.8m(l)
2) suitable for frigid zones because there is no water in the tube
3) designed for pressure system
4) heat pipe material: borosilicate glass 3.3
5) the heat collecting part is a vacuum glass tube that lowers heat loss
6) stable solar conversion throughout the day, with the round shaped tube allowing solar penetration from all angles