Who uses Tsinghua Tongfang solar energy?

This doesn't seem to be good. Since there is no national standard, the current solar water heater market can be considered a mixed bag. When consumers are shopping, they should not buy products without quality assurance just because they are cheap. So, how should consumers identify the quality of solar water heaters? Take a look at the vacuum tube: The vacuum tube is the most important component of the solar water heater. Currently, there are thick tubes (usually 58mm in diameter) and thin tubes (usually 47mm in diameter). Relatively speaking, thick tubes have a large heat collection area, fast heat collection and high water temperature. Therefore, when purchasing, priority should be given to solar water heaters using thick tubes. There are mainly two types of materials for manufacturing vacuum tubes: vacuum tubessingle-target and three-target vacuum tubes. Among them, three-target vacuum tubes are of better quality, and consumers can identify them by appearance when purchasing. The vacuum tube of the single target machine is gray in color, with color difference, and the inner wall of the vacuum tube is light black, while the vacuum tube of the three target machine has a bluish appearance, no color difference and the inner wall is dark red. Second, weigh the weight: the water tank is very important for the water heater. Generally, heavy water tanks are of good quality. The weight is mainly determined by the material of the water tank shell and the foam layer between the water tank shell and the water tank liner. Generally, the shell of a relatively poor water tank is made of shiny stainless steel (currently many large cities have banned the use ofwater heaters made of this material due to the presence of light pollution), and the shell is not thick and light enough. . The foam layer is directly related to the insulation effect of the water heater, so it is also very critical for the use of the water heater. Generally, the foam layer of famous brand products is foamed by machine at high pressure, so that there is no air between the outer shell and the inner tank, and the foam layer is dense and thick. Therefore, the entire water tank is often heavy to weigh. Three comments on brackets: Generally, the brackets of better quality solar water heaters are made of aluminum alloy brackets, which are thick and strong. ●Note: The quality of the water heater's inner tank cannot be identified by its appearance. In this case, consumers can judge by reading the instructions. Generally, heaterse-water produced by usual manufacturers will not be vague about the inner tank material technology. Therefore, consumers should read the instructions carefully when purchasing.