Solar heat collector is the component of solar power system. The function of solar heat collector is equivalent to the electric water heaters and gas water heater. The difference among them is that solar heat collectors use the sun's heat radiation, therefore the heating time is only there is sun. The current popularity of solar heat collector in chinese market is all-glass vacuum tube solar collectors.
The structure of solar heat collector is divided into the outer tube, inner tube, selective absorbing coating, getter, stainless steel clamp, vacuum laminated and other parts. Mature solar heat collector in foreign market is flat-plate solar heat collector, which is long life, high stability, easy recycling, but the cost of the vacuum tube solar heat collector is slightly higher than other collectors. But the flat-plate solar heat collector unstoppable in the solar industry, not misled by some manufacturers to be strangled. Now many designers institute has been aware of the drainage problem. All-glass vacuum tube solar heat collector is usually a high borosilicate glass 3.3 special hardware, the use of selective sputtering vacuum coating process. Nitrogen can be divided into single target coating process of aluminum and copper, aluminum, stainless steel coating process the three brilliant target imports of stainless steel water tank.