섬유

development of selectively coated solar absorber on the basis of aluminum roll-bond-heat exchangers

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 317
a process has been developed for the production of selectively coated roll-bond absorbers of al 99.5 and almnzr alloys. the method may be compared with a two-stage anodizing process. the coating produced represents a nickel structure with average absorption values of alpha = 94 and emission values of epsilon = 14. the absorbers thus coated have mainly been installed in hermetically sealed collectors and proved completely stable for three years. by means of a subsequent surface treatment, the stability of the coating has been so increased that they can also be mounted in ventilated collectors however, the test period of about 1 year does not yet allow of a definite judgement as to their quality. (era citation 07:043033)
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