Method 1: The system is not pressurized: open system, which is the structure of most of our traditional vacuum tube solar cells. There is a pipe directly connected to the atmosphere when there is too much solar energy. Energy, that is, solar energy exceeds 100°C, water in the water tank ""Open the pot" to release steam to dissipate heat.
Method 2: Use T/P valve in pressure system: T/P valve, that is, temperature/pressure safety valve, the function of this valve is when the temperature exceeds or the pressure exceeds the set threshold, the valve Open, in a solar water heating system, the general threshold is a temperature of 99°C and a pressure of 0.6MPa
Currently, most of the. Pressurized solar water heater systems have this valve installed on the water tank as the primary means of preventing "overheating" of the heating systems-vacuum tube solar water.
Method 3: Sun protection measures: When the system is in danger of overheating, remove the artificial sunshade or passive automatic sunshade.
Shading involves using a coating on the surface of the collector to block sunlight to prevent the vacuum tube from continuing to absorb heat and prevent the solar heating system from water from “overheating”. One of them is artificial shading. When not used for a long time, artificial measures are taken to block sunlight on the solar collector, which brings insecurity and problems to consumers.
Method 4: Improve the solar vacuum glass tube so that it has effective heat absorption performance in low temperature areas and poor heat absorption performance in high temperature areas. high temperature.