The network spreads and uses the solar water heater for a long time carcinogenically The expert calls it unharmful to skin

The network spreads and uses the solar water heater for a long time carcinogenically The expert calls it unharmful to skin
The network spreads and uses the solar water heater for a long time carcinogenically The expert calls it unharmful to skin
A few days ago, online articles said, 99% of the solar water heater water qualities in our country were not up to standard, water will produce inferior nitrate,etc. after heating repeatedly, it will even be carcinogenic that there are hidden dangers on health in long term administration; And propose, only abroad with the advanced closing solar water heater, and does not use more general turning on solar water heater namely vacuum tube water heater in our country. Are these statements with good grounds? The reporter has interviewed related departments, enterprise and expert. Doubt: Will water in the solar water heater be carcinogenic? [Respond ] heat inferior nitrate repeatedly, unsuitable to drink, but unharmful to skin It is reported, water will produce inferior nitrate to heat repeatedly, for instance water of some boilers, inferior nitrate is in the body and the gastric acid is applied inferior nitre amine produced it is a kind of carcinogen. Disease in Shandong is accused of Zhou JingYang, Deputy Director of centre, and said, the running water, through heating repeatedly, nitrate in water will be transformed into inferior nitrate, eating 0.3- 0.5 grams of inferior nitrate by mistake will be poisoned, breathe symptom not smooth with livid purple face, the serious one will even die. Eat the food of inferior nitrate with high content for a long time, can transform under certain condition into inferior nitre amine, may be carcinogenic. Water in the solar water heater should not be drunk, but is used for bathing and does not damage the skin, unless the one that does not in the water heater need for a long time, water that water quality has already deteriorated. Auspicious specially new energy Vice President of limited company Li YunBin says the strength promise in Shandong, water in the solar water heater should not be drunk or used for cooking, it is OK to use for bathing, doing washing, sweeping family's hygiene. Have not found that because uses the solar water heater to have pathogenic state of inferior nitrate to bath at present. Chemical engineering institute, Architecture School professor and king of Tianjin university say, water in the solar water heater of the vacuum tube is after heating repeatedly in a tie, will produce inferior nitrate, large intestine fungus group, but not only the solar water heater, including electric heater, have water tank store getting hot water heater these problem stores in. Water of the electric heater is similar to heating principle of the solar water heater of the vacuum tube, always some water is heated repeatedly. Because the capacity of the electric heater is smaller, water is very easy to use up, can close the power when being it is unnecessary, so this question is not very obvious. But there is much water that the solar water heater capacity can not be generally used once more than 100 liters, will heat repeatedly. Inferior nitrate is very common in life, for example the grain, vegetables, meat contain a certain amount of inferior nitrate, some processing smokes the food, pickles there is inferior nitrate in the vegetables too. As far as reporter know, according to the regulation that " national standard food additive of food security uses the standard ", inferior nitrate only allows to salt products such as the bacon,etc. down and have traces to remain, limit is 30 mg/kg, the remaining amount can't exceed 70 mg/kg either to smoke hams at most. Doubt: Does the solar water heater water quality of our country have standards? [Respond ] yes recommendatory standard, non- peremptory. Spotted check and has not found water quality does not conforms to and marks the relevant person in charge of national standard committee to tell reporters according to the existing standard, our country has already sanctioned releasing 19 items of solar energy heat and utilizing the national standard at present. Among them, " the home the intersection of sun and the intersection of hot water and the intersection of system and technological terms " stipulate home the intersection of sun and the intersection of hot water and hot water that system offer should have rust, peculiar smell, other material to hinder health; After water quality should fill the home sun hot water system with according with water of the sanitary standard while checking, stand for two days continuously on condition that the sun irradiating amount in Japan is greater than or equal to 17 trillion joule(J)s per square meter, then discharge the hot water, there are rust, peculiar smell or other materials which hinder the health in the hot water to check. The relevant person in charge of State Bureau of Quality Testing says, in the past two years, the country has spotted check country's quality surveillance to the home solar water heater, the product percent of pass is above 86%. In 2010, the national quality testing department spots check 8 provinces (market) such as Jiangsu, Zhejiang, Guangdong together 60 60 kinds of home sun hot water systematic products which enterprises produced, spot check 10 indexes such as the project including water quality. The result reveals, 8 kinds of products do not accord with the relevant standard, respectively for able to bear pressing, heat performance, appearance, storing four indexes of hot water tank not up to standarding, have not found that there is water quality that does not conform to and mark the phenomenon. This year, Quality Testing Bureau has organized spotting check 9 provinces (market) again 60 60 kinds of home sun hot water systematic products which enterprises produced, 8 kinds of product quality do not accord with the standard, involve heat performance, appearance and store the hot water tank, has not found water quality does not conforms to and marks. But the reporter finds, national standards regarding solar energy heat utilized are still all recommendatory standards at present, it is not the mandatory standard. A tie of king does not think our country have sector standard of solar water heater water quality, the existing standard is basically a standard made. An expert of Ministry of Health says, they mainly make measuring to the drinking water, do not measure and bath and use water. Auspicious specially new energy director of limited company monitoring center Ma GuangBai says the strength promise in Shandong, have not heard solar energy bathes and uses the detailed standard of water. Not only our country does not have, also have in the developed country. Doubt: By not using the opening water heater abroad? [Respond ] the intersection of our country and person who turn on solar water heater have export reach American-European countries according to the relevent statistics, in 2010, the total amount of market of water heater of our country is 46,500 million, among them the solar water heater proportion is 20 billion, the electric heater is 12,500 million, the gas heater is 10,500 million. Online article claims, the opening water heater namely vacuum tube water heater is relatively backward, are used only at home, do not use abroad. As to this, the expert of the national solar water heater quality surveillance inspection center of Beijing, Wuhan says, our country some producer vacuum tube solar water heaters have already got U.S.A., European Union, South Africa, Canada, Australian etc products to authorize, export 154 countries and regions, annual sales amount is about 200 million dollars. According to auspicious special company of the strength promise, the company exports opening nearly 70,000 square meters of water heater every year, person who close solar energy collect 36000 of heat exchanger, mainly export to areas such as Europe, Southeast Asia, Australia, America,etc.. The strength promise is auspicious specially the turning on solar water heater is authorized through Europe authoritative SolarKeymark, reveal in the report, it accords with " not producing pollution to water " to measure the products Requirement. A tie of king says, the vacuum tube solar water heaters inserts the vacuum glass tube into water tank directly, the ones that are similar to us and heat up water at ordinary times and use " It is fast hot " . This kind of vacuum tube solar energy is usually opening type, because the cost is too high if making into the closing type, also unnecessary. And what the closing solar water heater is generally used is plateform or plastic collection heat exchanger, adopt working medium to circulate, but some water is only used for heating, do not offer users to to use, avoid in this way Repetition heat phenomenon. Li YunBin says, the turning on solar water heater economy is applicable, have occupied about Chinese solar water heater 80% of markets. The foreign sun? �� of amaranth people the intersection of Tao and ape wake up dog account low to settle �� Jue sole �� brilliant to coerce the intersection of chaff and sincere the intersection of �� and low the intersection of field and 1 neck Why does Zhyuan �� Bu pass on Yan Jin admire?


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