1. After 5 hours of exposure to the sun in winter, the water temperature in the water tank can rise about 20 degrees, which means the temperature in the water tank can reach about 50 degrees.
2. The capacity of the water tank is usually determined based on the number of people and the amount of hot water used. It can be calculated between 50 and 80 liters per person. If the water tank has a large capacity, there will be more vacuum tubes; if it has a small capacity, there will be fewer vacuum tubes. But there are also solar water heaters equipped with double-layer vacuum tubes, which have good heating effects in winter.
3. If the temperature in the water tank is not sufficient, it can be heated via the auxiliary electric heater.
If it is solar powered and the weather is nice, the water temperature will be between 40 and 50 degrees in 2 to 3 hours. If you go towater in the morning it will be around 80 degrees. around 3 p.m. In the summer it will be around 80 degrees. In winter, the temperature can be around 70 degrees on a sunny day. In normal winter, the temperature is usually around 50 to 60 degrees, which is a sufficient temperature for swimming.