The absence of water in solar energy will damage the solar energy:
It will not be damaged if exposed to sunlight without water, but it will be damaged if water is injected. Since the internal temperature of the vacuum tube is high when exposed to sunlight, it is easy to burst. Generally, water is added at night. If there is more than one third of the water in the solar cell, water can also be added when the sun is shining.
If not used for a long time, it is recommended to cover the collector. If it remains in the air for a long time, it will accelerate the aging of the polyurethane insulating layer.
If there is no water in the solar water heater, it will have an impact on the water heater~
It is not good to dry the solar vacuum tube in the air, because the temperature of the inner wall of the vacuum tube can reach 400 degrees, so it is not good to dry it in the air. Vacuum tubes explodehave direct sunlight, and good vacuum tubes will also shorten their lifespan. they can be used for twenty years, the heat collection effect and molecular structure of the film will change due to exposure to air, reducing the service life.
I think if your water heater is not used temporarily, it is recommended to cover the vacuum tube with felt, carpet or quilt to avoid sunlight, which will significantly reduce the likelihood of problems.
At the same time, evacuated tube solar water heaters are very efficient on sunny summer days, the water temperature can reach boiling point in less than two days if no water is used for a long time. , such as when traveling or traveling, the water tank will be at high temperature for a long time. Under high pressure, this will promote the aging of the seal ring, accThe polyurethane will age and shrink, and sometimes the exhaust will not. Too high pressure will cause the water tank to swell and scale, shortening its lifespan. Therefore, if you are away from home for a long time, you should ask someone to add hot and cold water frequently, or place a cover on the vacuum tube collector to block the sun, then take it off after you get home. If it is not used for a long time in winter, you should cancel the electric heating setting to avoid wasting electricity.
I hope the answer is useful to you.