The principle of solar water storage tanks is the natural circulation of water by convection. The water storage tank of the solar water heater includes a water inlet water storage container and a water outlet water storage container. The water storage container is provided with a circulating water inlet connected to the upper port of the solar collector and a circulating water outlet connected to the lower port of the solar collector. the solar collector. The circulating water inlet is located in the water storage tank. The position of the pipe opening in the container is higher than the position of the circulating water outlet in the water storage tank. The water heated by the collector rises automatically and enters the water storage through the circulating water inlet with a higher pipe opening. Lower temperature water in the water storage automatically flows into the collector from thehas circulating water outlet with a lower pipe opening, thus forming. circulation of water by natural convection and efficient use of solar energy through complete circulation and heat exchange between the water in the water storage and the collector.
If you use Italian Aquasystem airbag pressure tank, it will last 7-8 years, no problem. If it's a diaphragm type, it's hard to tell, because the bottom of the tank is. in direct contact with water, and it will last a long time. It rusts, which is why many people who use diaphragm-style pressure tanks will only be able to empty the water from the pressure tank after using it for a while. That is, the tank wall is rusty. At present, most of them use airbag type.