섬유

aging and corrosion problems with flat solar energy absorbers. study based upon literature and experiment exchanges aaldrings-och korrosions-problem hos plana termiska solfaangare. en studie baserad paa litteratur och erfarenhetsutbyte

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 341
the construction and the causes of damage to solar energy absorbers are reviewed. aging is due to ultraviolet radiation, temperature, humidity, oxygen, impurities in the air and other effects. a literature review is given about the constituent parts. the coverplate may be of glass, several types of plastics, fluoro-compounds, fiberglass, or silicones. for the absorbing surface, sintered chromium oxide, black nickel, black iron, copper oxide, manganese oxides, or selective coated alumimium are used. the insulation is often made of mineral wool or polyurethane resins inspection data are reported for nine solar flat-shaped energy absorbers. most of them are used for the production of warm water and have been in use between three months and three years. nearly all coverplates bore important deposits caused by condensation. some of the nine aborbers show corrosion on the aborbing surface and/or on insulation
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