The reason why solar energy is not hot in summer and hot in winter is due to the working principle of solar energy. According to relevant data, visibility is higher at noon on sunny days in winter, solar radiation is large, and solar energy absorbs more heat. In addition, winter is relatively cold, and the human body's senses will also feel that hot water comes from solar energy. warmer in winter.
Can solar water heaters be damaged if there is no water in summer?
How to properly use and maintain solar water heaters in summer :
1. Scientifically choose the water filling time
Solar water heaters should be filled with water regularly. However, it is strictly prohibited to fill the water when the weather is particularly hot and the water temperature is particularly high. It is strictly prohibited toadd water immediately after the water runs out. Due to the strong sunlight in summer, the temperature of solar vacuum tubes in the air reaches 270 degrees Celsius to 400 degrees Celsius. At this time, it is easy to burst the vacuum tube. in the morning before sunrise or two hours after sunset in the evening. Water, it can guarantee the life of the solar vacuum tube.
2. Correctly adjust the hot and cold water valve
The steps of adjusting the water temperature of the solar water heater: first open the cold water valve, adjust the water flow cold water appropriately, then open the hot water valve and adjust until the required bath temperature is obtained.
Due to the prolonged duration of sunshine in summer, the temperature is higher and household hot water consumption is lower. Therefore, hot water from solar water heaters often has a lower temperature.us high, usually reaching over 60 degrees Celsius. For ordinary households, the distance between the water storage point and the solar water heater water point is often long, the water temperature in the water pipes can reach about 35 degrees Celsius due to high temperature in summer. Therefore, when we turn on the water heater, the normal temperature hot water in the water pipe will be discharged first, and after a minute or two, the high temperature hot water will be discharged. If you are not careful, you may burn yourself. your skin. Therefore, when using a water heater in summer, you should pay attention to the hot water temperature.
3. Intelligent use of tail hot water
Intelligent use of tail hot water can better save resources. When you take a shower, if the water in the solar water heater runs out and the person does nothasn't rinsed it, you can pour cold water for a few minutes and use the principle of cold water flowing and hot water floating to come out. hot water into the tube, and you can continue to shower; If there is still some hot water left in the solar water heater after showering, add cold water for a few minutes, and the resulting hot water can wash one more. person ; In addition, be careful not to point the nozzle towards the human body when adjusting the shower water temperature to avoid burns.
4. Appropriately determine the amount of water to be supplied
Determine the amount of water to be supplied based on weather conditions to achieve a more satisfactory water temperature. If the weather is good the next day, l water can be filled. ; if it is cloudy or cloudy, fill the tank with half a tank of water; it rained all day so the original water was conserved and no cold water was provided.
5. Check and maintain the pipes regularly.
Check the exhaust holes regularly to ensure smooth flow to avoid inflation or deflation of the water tank; For solar water heaters equipped with auxiliary electric heating devices, pay special attention to the water supply to avoid drying out. burning without water. Also check whether the solar water pipe insulation layer and anti-UV tape are aging and cracking, if the water supply pipe is exposed to the sun, it will easily become hard and brittle, crack and leak . Users are advised to install layers of insulation and UV tape beforehand to completely protect the water pipes.
6. Prevent accidents during thunderstorms and wind.
Due to their working principle, solar water heaters must bere installed on the upper balcony. Solar water heaters are generally larger due to their heat collection requirements. Therefore, users should pay attention to reinforcing the supports of solar water heaters in windy weather to avoid accidents. Be sure to fill the water heater with water on windy days to increase stability.
7. Protective measures should be taken when the solar water heater is not used for a long time in summer.
Currently, most domestic solar water heaters use vacuum collector tubes. This type of vacuum collector tube has high absorption efficiency. When the outdoor temperature is high in summer, during seasons with long sunshine and strong radiation, it does not take 48 hours to reach the boiling point. If the water heater is not used for a long time, the water in the water tank willwill be retained for a long period of time. When the water tank is exposed to high temperatures for a long time, the aging rate of the polyurethane insulation layer will increase. Tartar will form easily. Excessive pressure will also cause the water tank to deteriorate, causing damage to the water tank.
Therefore, if you do not use the solar water heater for a long time, you should cover the vacuum collector tube and remove it when using it again. You can also remove the vacuum collector tube first, but this method cannot be done by yourself and requires professional assistance.
It will have an impact~ It is not good to dry solar vacuum tubes in the air, because the temperature of the inner wall of the vacuum tube can reach 400 degrees. This way the vacuum tubes will be of poor quality. explode directly in the sun. De good vacuum tubes, like Linuo, will shorten the service life, for example, they can be used for twenty years, but the heat collection effect and molecular structure change of the film layer will be caused by drying in the air. , which will reduce the service life.
If you do not use it at the moment, it is recommended to cover the vacuum tube with felt, carpet or quilt to avoid sunlight, so that it does not there is no problem.
Air drying the other parts will not pose a problem.
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 the water does not is not used for a long period of time, for example when traveling. or when traveling, the water tank will be exposed to high temperatures and pressures for a long time. In this state, it will promote agingof the seal ring, will accelerate the aging and shrinkage of polyurethane, and sometimes the exhaust is not smooth. . Too high pressure will cause the water tank to swell and scale, thus reducing 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.