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What to do with the solar water heater, experts to prevent?
Last week, the weekly quality report about the choice of the leakage protector and safety protection function, this time together to learn about the solar water heater, said it everyone not unfamiliar, a lot of people are in the home, use it to take a shower of green environmental protection, but water ruthless, if the solar water heater tube will be getting into trouble.
Recently, the solar water heater of a residential building in fuyang city had a burst pipe, and the water was flowing down. After freezing, the icicles were hanging from the fifth floor to the first floor, and when it fell, it was easy to break the pedestrians.
And this kind of solar water heater is installed on the roof, after the detonation tube, how can discover in time, and reduce the loss to the lowest?
"It's very simple," said li yuwu, a researcher at the solar product testing center of the shandong provincial quality inspection institute. Pay attention to indoor controller in liquid level gauge more at ordinary times, if the water has been unusual, dissatisfaction on the water, that there may be a tube or leakage, this time should be broken water valve, professional service, please."
Tube leakage occurs mainly in place, the water pipe and glass vacuum heat-collecting tube experts suggest that heat tracing drive solar water heater, winter temperatures low, power controller do not for a long time, make up water pipe heat preservation function can normal boot. At the same time, the bath must be in time to the water, do not let the solar water heater without water, form the air.
Li Yuwu said to reporters: "the inside of the solar energy water heater in the condition of air drying, the temperature can go to a couple of baidu, when the water injection, vacuum tube temperature of cold and hot alternation, local there will be a larger pressure, also will encounter temperatures in glass, it is likely to cause detonation tube phenomenon, so suggest the solar water heater water to timely, generally should choose water in the morning or evening."
Spring is the best season for solar water heater installation, the expert tips in addition to the energy efficiency label and 3 c certification, citizens when choosing the solar water heater, must pay more attention to the quality of the collection hot parts.
Weekly quality report 2.JPG.
"Pay attention to the uniformity of the color of the vacuum collector tube, and pay attention to the appearance of the key parts, and look at the appearance and sometimes the quality of the product." "Li said. At the same time, the tank on the roof of one-piece solar water heater, when the choice must pay attention to the product identification in the water tank insulation layer thickness, experts recommend choose thicker, heat preservation effect is good, so the supply of hot water more.
According to experts, in shandong, each solar water heater can save about 1,000 kilowatt-hours of electricity per year. Installing solar water heaters is a choice for many families. What about the quality of solar water heater in shandong province? Why the solar water heater is a three - point quality, seven - point installation?
From 2013 to 2017, the shandong department of quality solar water heater production enterprises in the province for the 170 batches of selectives examination, testing found 9 batches is unqualified, unqualified products are mainly concentrated in thermal performance, heat storage water tank and the energy efficiency label and so on. Collection hot parts of the absorption rate directly affects the thermal performance of solar water heater, if the higher the absorption rate, the higher the efficiency of the light energy is converted into heat energy of the sun, that the more hot water. But experts caution that companies should not blindly pursue high water temperature, but deliberately reduce the volume of water tanks, resulting in insufficient hot water supply.
Li Yuwu told reporters that the recent sampling inspection found that some companies for gb misunderstanding exists, he said: "the water capacity of 100 litres of solar water heater, even if the water temperature reached 98 degrees, its effective heat not comparable to water capacity of 150 litres of water temperature of 90 degrees of the solar water heater, and the index of national standard examination is useful heat, not the temperature."
With the continuous upgrading of the solar water heater industry, the number of enterprises in the province has decreased from nearly 1,000 in the past to less than 100 now, but the enterprise scale and production process have been continuously improved. Solar water heater products and ordinary appliances are different, installation is the key. In addition to fixing, the location of the water tank is also critical.
Li Yuwu tells a reporter, "solar water heater, it is a semi-finished products, industry quality often speak three points, seven points to install, in separate home solar water heater, for example, when installation to install the water tank is higher than collector, and connected to the water tank and the collector loop line should have a reasonable slope, because of the high density low density in cold water, hot water so as to form a natural cycle."
