Description

The non-pressure solar water heater is called the direct-inserting all-glass vacuum tube solar water heater. Because the vacuum collector tube and the water tank are sealed by the sealing rubber ring, they cannot withstand the pressure. Households generally use non-pressure solar water heaters. The water tank has a pipe that communicates with the atmosphere. It uses the height difference between the roof and the home to generate pressure when using water. Its safety, cost and service life are much more significant than the pressure type.

Working Theory

The non-pressure solar water heater is a kind of solar water heater which uses the vacuum tube with high absorptivity and low emissivity to convert the absorbed solar radiation into heat energy. It uses the characteristics of large cold-water ratio and small proportion of hot water to form a natural circulation of cold water from top to bottom and hot water from bottom to top in the vacuum tube, which gradually increases the temperature of the whole water and reaches a certain temperature.