The temperature of the collector can reach 300 degrees when exposed to air in summer. Some residual water inside will definitely turn into water vapor and evaporate. If you see hot steam, it means your solar exhaust system is broken. Still works and plays the role of decompression, so the collector tube is very small and can explode. However, it is still recommended not to air dry it when not using solar power. is very harmful to the solar absorption coating. Disadvantage: General coatings will be damaged if air dried for a period of time, and the service life of the high temperature resistant coating will be greatly reduced. Another point to note is that watering must be done. never do it in the sun. It is better to choose it in the morning or on a rainy day, otherwise if a high temperature collecting tube encounters undercold, it is easy for the tube to explode.
What should I do if the solar water heater emits smoke because the cap explodes?
If the pipe does not explode, there will be no issue.
Generally, water filling should be done when there is more than half of the water in the water tank, or when there is no sunlight. When filling water at other times, if the water is vacuum. The tube is dried, the vacuum tube air drying will reach nearly 300 degrees, sudden flooding may cause the pipes to explode.
The outer part of the solar water heater (all components of the vacuum tube solar water heater except the instrument are outside and the collector of the water heater flat plate solar is outside) has no outlet. .
The so-called plug in the question should be electric heating.
If the electric heater emits smoke, it mayt only mean that the electric heater is burnt out, and this is definitely not due to exposure to the sun, as the water temperature in the solar water heater tank will not vary. exceed 100 degrees Celsius.
There are two reasons why the electric heater emits smoke:
First, the electric heater burns after being used for too long. In this case, simply replace the electric heater.
Second, the water in the water tank is empty, and the electric heater itself continues to heat, making the temperature too high and burning. In this case, the electric heater must also be replaced, there is no other way.