Solar Water Heater Hidden Trouble: 99% of Products Allegedly Failed

"Solar water heaters, especially water in solar water heaters for the domestic sector, have solved the problem of water temperature. There are still two areas that are currently problems and are also hidden dangers: water pressure and water quality. Especially water quality, the country's total, 99% of the The solar water heater company's products failed in this regard, including the industry giant Huang Ming, the water contains nitrite, coliform bacteria, etc., if you use this water to bathe, the long-term hidden dangers to health," Beijing Solar Energy Technology Wang Zhihui, founder of the company (hereinafter referred to as Sola Sunshine), told Daily Economic News.

When reporters stated that some companies raised concerns about the quality of solar water heaters and tried to take off the "emperor's new clothes," the first reaction of Chen Yiyan, the secretary general of the China Solar Energy Professional Committee, doubted: "Which company is so aware?"

Is there any problem with the quality of solar water heaters? If there is a problem, is the proportion really high? While paying close attention to the highly industrialized nature of an industry, should people still look back and see if the products provided by the industry are healthy and safe? After all, respect for life and health is above everything else.

"This does not dare to say" nitrite into the industry "imperial new"?

According to the source of data on the "99%" rate of unsatisfactory water quality of solar water heaters, Wang Zhihui said that the conclusion is that "solar water heaters on the market are mostly open-type products, and the characteristics of open-type products determine the quality of water." There is always 20% to 30% of the water is dead, there has been repeated cooking, there will be a lot of bacteria, and these things start to be used as new water."

Regarding nitrites, Wang Zhihui told the “Daily Economic News” that the national mandatory standards stipulated that the nitrite content in dairy products should not exceed 0.2 mg/kg, and the nitrite residue in meat products should not exceed 0.03 g/kg. Kg. The water contains trace amounts of nitrates. When the water is heated for a long time, the concentration of nitrates increases relatively as the water evaporates, and it is decomposed by heat into nitrite. If stored too long or improperly stored, bacteria can multiply and nitrate can be converted to nitrite. Nitrite produces carcinogenic nitrite amines in gastric juice or in bacteria in the intestine, increasing the risk of gastric cancer.

"Daily Economic News" during the interview, found that more solar water heater companies for "solar water heaters contain excessive bacteria, whether there is nitrite," and other issues shut it down.

A handful of companies admit that the water in solar water heaters contains nitrite and the bacteria are exceeding the standard. “This is a common-sense issue. Any company that knows solar water heaters knows it, but it is not willing to face it because it means that Solar water heaters can hardly make money in this area anymore,” said a founder of a company that has been in the solar water heater industry for more than 10 years and told Daily Daily News.

"This has become the emperor's new outfit, or melamine in the milk industry. Many people know this industry rule, but no one is willing to say this," said a dealer who has worked with solar water heater companies for many years. Say". He said that he has a guideline. Every time he goes to install water heaters in his home, he will say, "Don't cook with water from solar water heaters, and don't use it for washing dishes and washing fruits."

"Conclusion can not be" refraction industry standards are missing

Relevant people told the "Daily Economic News" that the solar water heater industry was in trouble.

“There are no mandatory standards, and there are no reliable institutions for unified management. There are many experts, but each expert has a interest group behind it. This interest group has a bad relationship with each other. As a result, many experts are quite For some corporate spokespersons, this is also one of the chaos in the solar water heater industry," a person who did not wish to be named to abandon the solar water heater industry and seek further development told the "Daily Economic News." At the same time, he said, "Every company has its own business intentions to release rumors or set off waves," and like that, Huang Ming (President of Huangming Solar Energy Group) once said that 80% of the quality of solar water heaters is unqualified. In fact, he is paving the way for his own product marketing."

Jiangsu Sun Energy Solar Energy Co., Ltd. (hereinafter referred to as: dual energy) founder, said that "the solar water heater industry actually has water quality problems." How serious is the problem? Yan Dafa believes that "the number of companies is certainly not as much as 99%." Yan Daofa once paid attention to this issue and his company's research results for improving water quality: “The soft water treatment in-line solar water heater storage tanks are too expensive to implement in the actual promotion process, and a water storage tank is even higher than it is now. Solar water heater product prices."

"Europe is no longer using open-type solar water heaters," said Wang Zhihui. For Wang Zhihui's point of view, more companies think that "the phenomenon exists, but the conclusion cannot be made." "There is no statutory basis, no one can do it," said the person who left the solar water heater industry.

The staff of the Nepali Water Quality Project team told the Daily Economic News that solar water heaters are definitely not clean because solar water heaters burn water at around 70 degrees. More can not be cleaned, it will certainly breed many bacteria. At the same time, there is no standard for the solar water heater industry. How much of it is beyond the standard? What happens after the standard is exceeded? And on the detection of solar water heater quality, manufacturers will not do, the industry will not do, the quality inspection department will not do it, "We do not accept individual cases." What if the consumer encounters such a problem? "You can only find the consumer association yourself."

Whether the country has the standard for bathing water or not, the Secretary-General of the National Solar Energy Standardization Technical Committee Jia Tieying told reporters on the phone, "There is no standard in two sentences in one sentence and there is no standard for bath water." Luo Yunjun, deputy director of the Beijing New Energy and Renewable Energy Association, said: “There are no standards. There is only one sentence in the relevant documents: To be healthy, do not have unhealthy factors.”

"If the bath water contains nitrite and coliforms, etc. will bring health risks to the body," Wang Yaotang, deputy director of the Department of Water Supply and Drainage at the China Building Design Institute, believes that "it can't be based on feeling that we need to do pathological tests."

Matters related to industry giants Huang Ming: The quality inspection department shall prevail

Ms. Zhou of the Ming Dynasty Company called the “Daily Economic News” to say that some years ago, in order to sell filters, someone said that the water in the Huang Ming Solar Water Heater contained nitrite. “If any company thinks that it is 1%, other belongs to 99. %, its remarks must have intentions.Huang Ming believes that there is no nitrite in the water in the solar water heater, should be the national quality inspection department, the Ministry of Health standards shall prevail."

Ms. Zhou said that the relevant national quality inspection departments and health departments had done research and testing, "proving that there is no problem with Huang Ming." But are the relevant supporting materials oral or documented? Ms. Zhou said "not very clear."

"Daily Economic News" learned from the interview that the AQSIQ and the Ministry of Health have no test report in this area and there are no relevant standards. Luo Yunjun told the “Daily Economic News”, “The current claim of the solar water heater industry about unqualified water quality is a problem, but it is unfounded. This should be the subject of the health and epidemic prevention department.”

He believes that “many companies are now talking more about themselves, and some companies find relevant testing departments to make a test report, whichever is the case, walking the arena is not appropriate.” But Luo Yunjun also said, “Testing It's a little complicated to do. At present, no one can explain this problem. Water quality is very different because of geographical differences, and the temperature range is also a problem. "The cost of the 100,000 yuan project can support the relevant inspection and reporting station. With the statutory test report, the issue of water quality will not be distorted or beautified."

Wang Yaotang told reporters that the water quality of the solar water heater industry was unqualified and contained nitrite. “The phenomenon exists, but currently there are no quantitative indicators, so it is not easy to conclude.” Why do we have no quantitative indicators? Wang Yaotang said, “Nobody is going to do this thing. It is a technical issue. It should be established by a well-qualified school water teacher.”