General vacuum tubeThe water temperature of solar water heaters can reach 60Celsiusin summer and around 45°C in winter. the vacuum tube cannot be adjusted and will continue to heat>; In case of rainy days, high-power electric heating design is adopted, but it consumes more energy than ordinary electric water heaters.
Since flat panel solar water heaters use advanced heat collection plate cores, the heat absorption rate of the plate core is higher than that of vacuum tubes. Water temperatures can reach over 90 degrees Celsius in summer. and around 70 degrees Celsius in winter. In addition, flat panel solar water heaters can adjust the water temperature by themselves, greater freedom of use in rainy days, electric heating design is adopted, which can save 70 to90%. energy than ordinary electric water heaters.
Protection of solar energy
Solar energy is afraid of cold but not of heat. Although the outside temperature is very high in summer, as long as there is water in the water tank, there is water. generally no danger. Even though solar energy burns up to 99°C, it is unlikely to explode. Today's home solar systems are all open systems that are in contact with air, just like a kettle that boils water at home. When it boils, the steam is released. "
"However, try to avoid adding water at midday. If there is no water in the water tank and you add water to the solar panel at noon when the temperature is relatively high, it will cause a vacuum. the glass tube of the solar panel breaks.