What is the vacuum tube of solar water heater?
According to the structure of the solar water heater is divided into vacuum tube solar water heater and flat type solar water heater, mainly vacuum tube solar water heater, occupy 95% of the domestic market share. Vacuum tube type solar water heater is composed of a heat collecting pipe, a water storage tank and bracket and other related parts, converting solar energy into heat energy mainly rely on vacuum tube, vacuum tube using the principle of cold water sinking floating, the water circulation and desired hot water.
The vacuum tube of the solar water heater is a high borosilicate glass 3.3.The utility model relates to a solar water heater, which is a device for converting solar energy into heat energy, which is used for heating water from low temperature to high temperature, so as to meet the requirement of hot water use in people's life and production.
3.3 high borosilicate glass strike abilities (the linear coefficient of thermal expansion (3.3 + 0.1) * 10-6/K, is a special glass material with a low coefficient of thermal expansion, high temperature resistance, high strength, high hardness, high transmittance and high chemical stability), the inner tube and the outer tube vacuum (the vacuum degree is 5 * (10-2) coating aluminum - N - aluminum, copper - aluminum and nitrogen etc.).
