Good s the most important
Winter or cloudy, hot water if out of the home less, or no insulation, so this water heater on the quality of solar cells is questionable.
The province is located in Haining solar product quality inspection center statistics, Henin-Hardenne\\ s all-glass solar collector tubes of the actual annual output has reached 150 million. However, market share, the production of solar cells from Haining sales account for only 25% of total market share. This means that about half of Haining\\ s solar collector tube overcapacity.
Shen Bin, deputy director of the center, said, Haining\\ s solar collector tube manufacturers still showed a rapid increase in trend. \"Two years ago, only 10 more than Henin solar collector tube manufacturer, has now reached 46.\" These 46 enterprises, mostly SMEs, large companies are few.
Excess capacity, supply and demand with solar collector tubes have a clear peak seasons, resulting in a disorderly competition in the industry, and ultimately affect the quality of products. According to Shen Bin, the last three years, the production of solar cells Haining, the market\\ s most widely used 57 mm diameter tube integrated pass rate 80%.
The performance of solar cells is directly related to the water heater\\ s performance good or bad. \"Quality, but off the solar collector tubes for solar energy absorption and transformation capacity is limited, especially in the winter and cloudy days, a less hot water heater, the water temperature is low, poor thermal insulation properties. A good solar water heater insulation in the winter time is 2 ~ 3 days, but the difference of , water temperature may be only just over one day at room temperature the same. \"
Recently, based on \"all-glass vacuum tube solar collector,\" the national standard, the provincial quality inspection center of the solar products prepared by the \"Zhejiang Province, all-glass vacuum tube solar collector evaluation of product quality supervision and inspection rules,\" permitted release. This means that, in the province-wide, for all-glass vacuum tube solar collectors have a uniform standard of supervision and inspection evaluation.