I am a professional solar energy designer. I have been working in the solar energy field since I graduated from college. First of all, solar energy generally does not require short-term maintenance if the water quality in your area is relatively good. , there will be less sediment generated inside the solar energy. Generally, for cleaning every 5 years or so, you just need to call the service department and have it professionally cleaned. Each tube costs about 5 yuan. this is not good, the sediment needs to be cleaned once every 2-3 years. As for what you said, when the temperature exceeds 90 degrees in summer (the water level is above 50%), it will not affect the solar performance, but try not to drink the solar water!
Method 1: The system does not support the pressure:
Opening system, this is the structure of most of our cellstraditional evacuated tube solar cells. There is a pipe directly connected to the. atmosphere. When there is too much solar energy, that is, the solar energy exceeds 100°C, the water in the water tank "boils" and releases steam to dissipate heat.
Method 2: Use a T/P valve in a pressure system:
T/P valve, i.e. a temperature/pressure safety valve, the function of this valve is when the temperature exceeds or the pressure exceeds the setting. When a certain threshold value is reached, the valve opens. In a solar hot water system, the general threshold value is a temperature of 99 p>
℃ and a pressure of 0.6MPa. .
Currently, most pressurized solar water heater systems have this valve installed on the water tank as the primary means of preventing "overheating" of pressurized tube solar water heater systems. empty.
Method 3: Shading Measurements:
WhenIf the system may overheat, remove artificial shading or passive automatic shading. 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 water heating system from "overheating" .
One of them is artificial shading. unused 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: