Model: | SQ-47*1800mm |
---|---|
Brand: | Longfei/OEM |
Origin: | Made In China |
Category: | Metallurgy , Mining & Energy / New Energy / Solar Energy |
Label: | solar collector tube , three coating tubes , three cavity tubes |
Price: |
US $1.92
/ pcs
|
Min. Order: | 100 pcs |
Last Online:07 May, 2012 |
Three cavity vacuum tube is based on the all-glass vacuum tube, then a short and hollow glass tube put into it. It leads to two-way heating and raised efficiency. When the temperature up to 25℃,it will start to conduct heat in 5 seconds. Its water energy in the tank is about 10% higher than the one that use ordinary vacuum tube.