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太阳能的吸热板芯的性能特点
来源:http://www.sdlntyn.com 发布时间:2016-3-15 17:09:50 浏览次数:674
吸热板芯的选用材料、结构形式和表面涂料的辐射特性对泰安太阳能热水器性能具有决定性影响。对吸热板的要求是有一定的承压能力,与水的相容性好,热性能高,制造工艺简单,各项成本合理,运行切实可靠。吸热板芯的材料,国外基本上都用铜和不锈纲,国内一般用铜、铝合金或镀锌板,用金属作吸热板芯,在通常温度范围内,其热传导能力较强,但对光的吸收能力却低于非金属。
The radiation characteristics of the material, structure and surface coating of the heat absorbing plate have a decisive influence on the performance of Tai'an solar water heater. Heat absorbing board is required to have a certain pressure, good compatibility with water, high thermal performance, manufacturing process is simple, the cost is reasonable, reliable operation. The heat collecting plate core material, foreign basically brass and stainless steel, the domestic copper, aluminum alloy or galvanized sheet, metal for heat absorbing plate core, usually within the temperature range, the heat conduction ability is strong, but light absorption ability is lower than non metal.
为降低反射率,提高吸收性能,需要在金属表面上制备一层黑色吸收涂层,以使金属的光吸收率提高到90%以上,从而改善泰安太阳能热水器的吸收效果。吸热板芯的断面形状较多,其中更常见的是管板式、管翼式、扁盒式和瓦楞式等多种形式。我国平板太阳能热水器大多采用全铜管平板式或铜铝复合式,因而热水器具有寿命长、不生锈、无腐蚀、水质清洁和热效率高等优点。
In order to reduce the reflectivity and improve the absorption performance, a layer of black absorbing coating is needed on the metal surface to increase the optical absorption of the metal to more than 90%, thus improving the absorption effect of Tai'an solar water heater. Heat absorbing plate core section shape more, of which the most common is tube plate and tube wing type, flat box and corrugated type and so on many kinds of forms. China's flat panel solar water heater is used mostly full brass plate or copper aluminum and water heater with long service life, no rust, no corrosion, clean water and thermal efficiency higher merit.
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