In fact, solar energy depends on the height of the water to draw water. Since the water in the water tank is used less and less, the water pressure becomes smaller and smaller, so you will feel that the water flow has decreased. become smaller, making bathing uncomfortable. This problem is still prevalent with simple non-pressure solar systems.
The best solution is to add a booster pump to achieve the function of pressurizing the outlet water. In this way, the outlet water pressure is stable and at the same time avoids bathing with a certain temperature. the water pressure is more comfortable.