Vacuum tube solar heating principle is what? Because the vacuum environment is sound insulated, like a hot water bottle because of vacuum even put a day or hot water, vacuum tube of the solar water heater is how the outside to the inside of the light source of the cold water pipe, not across the middle vacuum, can do solar vacuum heat conduction?
Solar energy is converted into heat energy, water from the outer coating heat, water temperature, density decreases, hot water upward movement, rather than the major water decreased. Water is always located in the upper part, the hot water tank. The solar water heater temperature has little relationship with the outside temperature, depending on the light. When you open any faucet the kitchen or bathroom, water heater and hot water in the gap will depend on the natural outflow, gap is bigger, the water pressure is high.
The vacuum tube is the core of the solar water heater, his structure is like an elongated thermos bottle container, vacuum between the inner and outer layers. The inner surface of the glass tube is coated with a special process using spectral selective absorbing coating, to maximize the absorption of solar radiation. The sunlight photons striking the coating,
In fact, is an application of heat pipeThe heat source is the sun, and the heating end is the vacuum tube on the roof
