There are many kinds: 1500, 1600, 1800, 1900, 2100, etc..I would like to know whether it is a long tube heating better?
Currently on the market the most common solar vacuum tube length is 1500mm and 1800mm; in the same amount of water, which is the size of the water tank, vacuum tube length, heat better, faster heating water.
At the same time, there are many kinds of pipe diameter, the bigger the diameter, the better the heat collecting effect.The collector tube solar water heater tube explosion may occur during use, so that the choice of the use of solar water heaters, the most common size vacuum tube on the market, so that once the pipe burst, at the lowest cost for maintenance and replacement.
Solar vacuum tube diameter of 47, 58, and so on, the length of the 1200.1500.1600.1660.1800.2100, etc., the main market is 47.58, the length of the main is the size of 1500.1800 of the total number of. According to the questions you ask, relative to the same volume of water tanks, long tube heating better. However, the proposed purchase of conventional solar energy, easy to buy from the market when the vacuum tube.
