How to use and maintain solar water heater correctly in summer?

1. Choose water supply time scientifically

Solar water heaters need to supply water regularly, but it is forbidden to supply water when the weather is extremely hot and the water temperature is extremely high, and it is also forbidden to add water immediately after the water is used up. Due to the strong sunlight in summer, the air drying temperature of solar vacuum tubes is as high as 270 ~ 400 degrees Celsius under the irradiation of the sun. At this time, water supply is easy to cause the vacuum tube to burst. It is best to supply water two hours before sunrise in the morning or after sunset in the evening to ensure the service life of solar vacuum tubes.

2. Reasonable adjustment of hot and cold water valves

Water temperature adjustment steps of solar water heater: first, open the cold water valve, properly adjust the cold water flow, and then open the hot water valve to adjust until the required bath temperature is reached.

In summer, due to the prolonged sunshine time, the temperature is higher, and the consumption of domestic hot water is less. Therefore, the temperature of hot water in solar water heaters is often very high, which can generally reach above 60 degrees Celsius. For the average family, the distance between the water storage point and the water consumption point of the solar water heater is often long. Because of the high temperature in summer, the water temperature in the water pipe can reach about 35 degrees Celsius. Therefore, when we turn on the water heater, the normal temperature hot water in the water pipe will be discharged first, and the high temperature hot water will be discharged after one or two minutes. If we are not careful, we may burn our skin. Therefore, we should pay attention to the temperature of hot water when using water heaters in summer.

3. Clever use of tail water

Clever use of tail hot water can save resources better. When taking a bath, if the water in the solar water heater has been used up, but people haven't washed it clean, then you can take a few minutes of cold water and use the principle that cold water sinks and hot water floats to push the hot water out of the pipe, so that you can take a bath. If there is still a little hot water in the solar water heater after bathing, you can wash a person with cold water for a few more minutes. In addition, when adjusting the shower water temperature, the shower nozzle should not be pointed at the human body to avoid scalding.

4. Appropriate determination of water supply.

According to the weather, we can get a satisfactory water temperature. If the weather is fine the next day, we can irrigate. If it is cloudy or cloudy, the upper part of the water tank is filled with water; It rains all day, so keep raw water instead of cold water.

5. Check and maintain the pipeline regularly.

Regularly check the vent to ensure smooth flow, so as to avoid bursting or deflation of the water tank; Solar water heaters with auxiliary electric heating devices pay special attention to water supply to prevent dry burning without water. At the same time, it is also necessary to check whether the thermal insulation layer and anti-ultraviolet tape of solar water pipes are aging and cracked. If the water supply pipe is exposed, it will easily become hard and brittle, crack and leak in the sun. Users had better install insulation layer and anti-ultraviolet tape in advance to fully protect water pipes.

6. Thunderstorm and windy weather should prevent accidents.

Because of its working principle, solar water heaters must be installed on the top balcony, and because of the heat collection requirements, solar water heaters are usually large in size. Therefore, in windy weather, users should pay attention to strengthening the bracket of solar water heater to prevent accidents. On windy days, the water heater must be filled with water to increase stability.

7. When solar water heaters are not used for a long time in summer, protective measures should be taken.

At present, most domestic solar water heaters use vacuum collector tubes, which have high absorption efficiency and can reach the boiling point in 48 hours in summer with high outdoor temperature, long sunshine time and strong radiation. If the water heater is not used for a long time, the water in the water tank will stay for a long time, and the water tank will be at high temperature for a long time, and the aging speed of the insulation layer-polyurethane will be accelerated, which is easy to form scale. Excessive pressure will also expand the water tank, resulting in damage to the water tank.

Therefore, if the solar water heater is not used for a long time, the vacuum collector tube should be shielded when it is used again. You can also remove the vacuum collector tube first, but this method cannot be removed by yourself and needs the assistance of professionals.