Solar water heaters have attracted the attention of many consumers due to numerous advantages such as environmental protection, energy saving and safety, but relatively speaking, solar water heaters are not very popular. Consumers also worry about whether solar water heaters are durable, and the news about solar water heater damage is endless. Is solar water heater really "weak"?
A vacuum tube. The vacuum tube is the core part of the solar water heater and the "heart" of the solar water heater. Its quality directly determines the performance of the entire water heater. The use of vacuum tubes is affected by coating technology and cleaning, coating, vacuuming, and sealing processes.
However, the vacuum tubes used in some ultra-low-cost solar water heaters have the following drawbacks: the vacuum is low, only 1/100 of the quality products; there are large amounts of impurities and vapors in the tubes, and when they encounter high temperatures, they become gases and the vacuum degree decreases; The stability of the lower film is poor, and within two to three years, the film layer is aged and detached, resulting in rapid deterioration of heat collection performance and inability to absorb sufficient heat.
Second, the insulation layer. Solar water heaters produce hot water during the day and they are stored in water storage tanks. If the thermal insulation performance of the insulation is not good, they cannot be used overnight or on rainy days, or they are not easy to use. The main reason for the poor insulation performance of solar water heaters is the insulation layer of the water heater. The quality of the insulation layer determines the temperature of the hot water and the amount of hot water.
Good insulation layer uses imported raw materials, such as polyurethane, low thermal conductivity, high temperature; insulation process using automatic constant temperature high pressure quantitative foaming, and high temperature aging treatment, high insulation performance and stability and long-lasting. Some low-grade materials have high thermal conductivity and non-uniform foaming. The temperature can be reduced by more than ten degrees overnight, and there is no hot water on rainy days. There are also black heart companies, in order to reduce costs, even using homemade benzene board, a few months after the insulation effect plummeted, basically do not keep warm after a year or two.
Third, the liner. At present, most solar water heater manufacturers claim that the tank liner is stainless steel. Also stainless steel, but chromium and nickel in stainless steel are very different. A good solar water heater adopts a high-chromium, high-nickel stainless steel inner liner to ensure that the inner liner is strong and durable, and has strong corrosion resistance; the low-quality liner uses low-grade stainless steel, is basically nickel-free, has poor corrosion resistance, and has a short service life.
Fourth, installation and service. Solar water heaters have very high installation requirements. Specialized installations are the basis and guarantee for their good winter use. Some no-name companies often recruit migrant workers to form guerrillas. They haven’t even had formal training to rush to work. These people neither know the design of pipelines or the expertise of fixing the main body of water heaters, nor do they understand the maintenance of the products in the later period. The problems abound, directly affecting the solar water heater's "standard life."
For example, the accessories used to fix the water heater mounting brackets are made of steel wire rods, which are strong and corrosion resistant. However, some small manufacturers use iron wire to fix them. As a result, some regions experience heavy rain, hail and other bad weather. Less solar water heaters fell to the ground.
Solar water heaters in the use of the process should pay attention to what issues?
1, pay attention to the water time.
2, according to the weather conditions, determine the amount of water to ensure proper water temperature when bathing.
3, regular inspection of the water heater pipe, exhaust vents and other components are working properly.
4. The air pollution is serious or the sand is large, and the vacuum tube is regularly washed in dry areas.
5, after the installation of water heaters, non-professionals should not easily move, handle the entire machine, so as not to damage the key components.
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