Solar cleaning 

 For long periods of cleaning the solar several hazards: 

 1, the scale of the thermal conductivity than the metal is much lower, the thermal conductivity of the metal steel pipe is the scale of 1000 times, the vacuum tube knot scale will seriously affect the temperature of hot water; hard scale can make solar thermal energy conversion rate even failure . This is the solar water heater water temperature decreases and water is less. Contains a variety of chemical composition, scale, long-term precipitation and accumulation of harmful substances in water increasing, it may lead to skin allergies. 3, slime, microbes, bacteria in a long time continuously updated, alternate reaction generated a lot of harmful substances. Can trigger a variety of skin diseases, some women, children sometimes feel itchy skin and from the red dot in the bath. For this reason. 

 Several hazards of solar energy for long periods of cleaning; 

 ● 1, the scale of the thermal conductivity than the metal is much lower, the thermal conductivity of the metal steel pipe is the scale of 1000 times; vacuum tube knot scale will seriously affect the temperature of hot water; hard scale can make solar thermal energy conversion rate to reduce or even failure. This is the reasons for the reduction of solar water heaters, water temperature decreases and water volume 

 Contains a variety of chemical composition, scale, long-term precipitation and accumulation of harmful substances in water increasing, it may lead to skin allergies. 

 3, slime, microbes, bacteria in a long time continuously updated, alternate reaction generated a lot of harmful substances. Can trigger a variety of skin diseases, some women, children sometimes feel itchy skin and from the red dot in the bath. 

 Scale solar energy the harmful effects of the following four aspects: 

 (1) collection efficiency decreased, the scale of the thermal conductivity up to less than one percent of the metal and end up with dirt tube heat transfer slow, low temperature hot water; not timely removed from the tube absorbs heat, the coating is easy to overheat. affect the vacuum tube service life; 

 (2), the probe sensor is easy failure, the water level detection signal distortion, electric pipe heat transfer poor, explosive pipe; 

 (3), hot water is cloudy, dirty, scale, containing a small amount of nitrate and nitrite, the body of toxic and hazardous (carcinogens), the so-called "thousands of boiling water toxic to drink may not. The scale is the multiplication of bacteria growth the hereby habitat, hot water contains large amounts of fine 

 Bacteria to human allergic phenomenon. 

 (4), corrosive, water tank, easy to knot scale formation of corrosion under the scale, the tank easily holed leakage. 

 The annual production capacity of China's solar water heaters is two times that of Europe, North America four times, has become the world's largest solar water heater producer and the largest solar water heater market. 

 2009 solar water heaters to the countryside "is a major event of the solar water heater industry, marks the nationally recognized solar water heater, solar water heater industry in China has entered a new era. Solar water heater to the countryside "policy support for the official opening means that the solar water heater industry, solar water heater" rural areas "such as a ray of spring, the whole industry full of strong vitality. 

 At present, urban and rural residents on the bath of hot water demand is growing rapidly. In rural areas and small and medium-sized cities, the solar water heater has become to improve people's quality of life, an important means of comprehensively building a moderately prosperous society. Has improved steadily with the development of high-temperature solar water heaters and solar energy and building integrated technologies, the applications of solar water heater is no longer confined to provide hot water, and are gradually heating, cooling, drying and industrial applications, the direction of expansion. China solar water heater will maintain a growth rate of over 30% in the past three years, the market potential is huge. 

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