The evacuated tube solar panel Nippon uses vacuum pipes with high year-round efficiency from the heat pipe types that absorb and convert the ultraviolet and the infrared spectrum of the light in heat energy not only in a clear day but during cold, rainy and cloudy weather as well. They have a minimum of 15 years efficiency and withstand hailstorms with measure of the hailstones of up to of 25 mm.
You can take a look at the detailed diagram of the vacuum pipe in the following diagram.
The stand is made under 40 ° tilt and if assembled correctly it ensures optimum illumination of the vacuum pipes and heating of the water. The heat bearing fluid circulation is accomplished thanks to the circulation pump and controller trailing for the temperature of the liquid in the collector and the water in the boiler. This precise control facilitates the efficient operation of the system.
With these systems the reservoir is located in the building itself, close to the consumers, and the collectors are mounted on the roof. Between them is mounted a pipeline to carry the heated fluid away from the collectors to the storage tank.
How do the evacuated tube solar panels work?
• The collectors of the heat pipe type are located separately from the warm water tank. The panels are mounted on the roof and the tank can be installed anywhere in the house.
• When the difference in temperature between the collectors and the tank with warm water reaches the set value, the controller will start the circulation pump automatically.
• The pump helps for the circulation of heated liquid through the tube.
• The heated fluid in the pipe will carry the heat from the solar collector to the water through the spiral heat exchanger in the tank for heated water.
• When the temperature of the water in the tank reaches that of the solar collector, the circulation pump will turn off automatically.
• When the temperature in the tank reaches the maximum set by the controller, the device will turn off automatically.