Knowledge of
Consumers to buy is the most fundamental standard should be easy to use winter to see the winter can not provide enough hot water in winter, water tank insulation effectiveness, and secondly, the choice of the brand to homes on the \"small\" to take \"Big.\"
First, choose
First select the professional manufacturer of the product, it is best quality brands, and has excellent internal quality and excellent after-sales service system and commitment to consumers in the purchase of solar water heaters, they should also have self-protection, to see a see is not the \"three noes\" products, if not a professional manufacturer of the product, there is no guarantee of quality, if it is fake and shoddy products to get money for the purpose of service is empty. Because solar energy is not the final product, installation and after-sales service is very important. If the improper installation or service can not keep, to a large extent also affect use. So do not emphasis on price rather than quality (including product quality and service quality), the expert teams of three measures to consumers.
First of all, when consumers buy solar water heater is the most fundamental standard should be easy to use winter to see the winter can not provide enough hot water in winter, water tank insulation effectiveness, and secondly, the choice of the brand to homes \"small \"take\" big. \" Brand is the manufacturer of a credit guarantee to consumers. Finally, be sure to choose the most obvious performance advantages of large brand-name products, the only way to buy roses for solar water heaters.
Second, the essential quality of vacuum tube
The core technology is solar water heater vacuum tube, and vacuum coating layer of the core technology is the technology leader in the current international standards are used to interfere coating layer coating technology, many manufacturers on the market are still used in the previous gradient film coating technology, gradual absorption of the membrane than 0.8 to 0.88, while the emission ratio was 0.07 to 0.13; interference film absorption ratio of 0.94 to 0.98, emission ratio of 0.03 to 0.06. Therefore, in the same light conditions, interference film collector pipe capacity than the average of 12% or more. Coating layer directly determine the effects of the use of solar water heaters and life, because the tube is cut at a high temperature cut 800 to 1,000 degrees, if the coating layer separated and too close, if not high-temperature coating layer and a very good cutting technology, the coating will certainly be burnt or damaged, it is generally the manufacturers had to stay a little longer blank layer, but such tubes can also be started in 2012, a long time effects are not so good. Summer water temperature can be as high as 90 to 100 degrees, this brand water heater temperature can be done, a long tube in the water at high temperatures to cook, if not high-temperature coating layer, coating layer which is certainly influential, especially air drying in air traffic control when the temperature is as high as 300 to 400 degrees, so as mentioned above, the general manufacturing enterprises in the production of vacuum tubes to use for a long time will not you imagine the.
Third, the water tank is also a key quality
In the absence of solar radiation in the case (night or rainy days), solar water heater will heat the outside release, both the heat loss of solar water heaters lose energy mainly through two ways: (1) cooling water tank (2) vacuum cooling to reduce cooling water tank The main method is to take the tank insulation measures, as the fed and warm, full of warm underwear underwear does not depend on the thickness of the same, good or bad insulation thickness and insulation material not directly related to the consumer not to be (XXMM extra-thick insulation ) misled by this propaganda, but rather focus on the foam mass, density, closed-cell foam rate of technical parameters of the water tank is the best material SUS304 stainless steel, made of high quality SUS304 stainless steel liner, resistance more corrosion. Inner year after year to be immersed in water. If the poor corrosion resistance, rust corrosion, leakage, life is short. Your example is also a bike, spend four five hundred to buy a bike, riding for a long time is not easy to rust the rim, but more than a hundred dollars a bicycle, riding a couple of months, a rain shower, rims on all the rust. Is also a stainless steel rim, why a non-rust, a rust it? This is mainly because of its rarity in different grades of stainless steel chromium and nickel content is not the same. Good stainless steel, chromium, nickel content of 7% to 10%, so the anti-corrosion ability, is not easy to rust; and low-cost low-quality stainless steel, chromium, nickel content of only 1% to 2% or even simply not there. Therefore, the use of one or two years it is easy to rust. SUS304 stainless steel of high chromium, high nickel, durable, long life.
Liner material selection is critical welding process is also critical. If the welding process is not good, the use of hand-welding, welding can not control the speed and time, welds or over-burning, easily oxidized at high temperatures, susceptible to corrosion; or welding is not transparent, easy to open the seam, causing leaks. Brands have automatic arc welding, welding with argon protection, weld tightly and securely, long service life.
Fourth, the support structure components should be reasonable and strong
stent design should be reasonable and should have sufficient strength and hardness and acid resistance, corrosion resistance to ensure adequate load-bearing capacity. Solar stent placed in the room but not the top floor to withstand wind and rain, in the purchase of domestic solar water heater should also note that the product is designed to have wind resistance, but also to follow the principle of mechanical design.
Fifth, temperature controller, pipe fittings is not the first wife
Solar water heaters have a very intelligent water level controller, he has two tranches of Sheung Shui automatic and fully automatic electric heating settings, there is a speed manual Sheung Shui settings and manual electric heating, water enough to make you sit back and relax! Have hot and cold water pipes, all kinds of copper fittings such as brass ball valve, check valve, tee, elbow, the wire will also affect your water needs. Because solar energy is to use 15 to 20 years, solar energy work environment in the outdoors, winter, cold rain and snow, Xiatian Lie on temperature, for pipes, fittings requirements are particularly high, if his parts do not match, use effect is difficult to ensure, in a very large extent, affect your water, or even treatment, freeze plugging, corrosion, aging, or even fall off, the solar \"semi\" to consumers endless trouble!
Sixth, after-sales service
Domestic solar water heaters after-sales service is also very important. Because of domestic solar water heaters are durable consumer goods, and is usually installed in the roof, solar bulky, precision components, poor working conditions, if the service is not professional, non-standard, in case of failure, the user is difficult to solve, phone call How many times have nobody, or even simply to find people. So the service must be protected. Currently, the market machine free warranty period is generally 3 to 5 years. Be sure to select brands and brand products and good after-sales service dealers.