Sell All-glass heat pipe

Description

1.Working principle of heat pipe type solar Evacuated Glass Tube An all-glass solar heat pipe is made of two layers of borosilicate glass 3.3. The inner tube is fixed in the outer tube with a spring holder and they are sealed together at the other end. The jacket between the two layers of glass is evacuated to form a vacuum of a high degree. The inner tube is also evacuated to form another vacuum of a lower degree with transfer fluid sealed in. The solar energy absorptive coating (SS-AlNx/Cu) with high stagnation temperature resistance property will not come off and it is anti-aging even after long term of use. Here is the illustration of all-glass solar heat pipe The inner tube is composed of attractive core, transfer fluid and spring holder. The Evaporation part absorbs the solar energy to heat up the transfer fluid which then evaporates. The vapor rises up in sound velocity to the condenser at the top of the tube, where it transfers heat energy to the water. The vapor condenses and flows back. This circulation will continue as long as there is solar energy. 2. Advantages of all-glass solar heat pipe (1).Superior thermal conductivity: this tube transfers heat energy through the phase transition of the transfer fluid. The thermal resistance is very low and it can transfer much more heat energy even than silver, copper or aluminum which have very high heat conductivity. (2).Superior isothermal stability: the vapor in the inner tube stays in saturation stage, so when it rises up, there is little pressure drop as well as temperature drop. (3).The density of heat flow in the inner tube can be changed by modifying the heating surface of the condenser or the evaporation part.