The most common lengths of solar vacuum tubes currently on the market are 1500mm and 1800mm; when the quantity of water is the same, that is, the size of the water tank is certain, the longer the length of the vacuum collecting tube; , the better the heat collection and the faster the water heating speed.
At the same time, there are many types of vacuum collector tube diameters. The larger the diameter, the better the heat collection effect.
Since the collector tube of the solar water heater may burst during use, it is recommended to choose a solar water heater that uses the most common size vacuum collector tube on the market , so that in the event of a tube burst problem, it can be recovered with the lowest possible repair and replacement cost.
Most solar water heater joints are 4-toothed interfacespoints, but there are also 6-point interfaces. You can use PPR pipes to modify them. It is best to use pipe diameter 2520. and the color should be dark. Absolutely do not use white pipes. Moss can easily grow inside white pipes. It's best to add an insulated pipe to prevent water pipes from bursting due to prolonged exposure to the sun! >