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Development of a new flat stationary evacuated CPC-collector for process heat applications

Buttinger, F. et al.

Solar energy. VOL 84; NUMBER 7, ; 2010, 1166-1174 -- Elsevier Science B.V., Amsterdam. (pages 1166-1174) -- 2010

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  • Title:
    Development of a new flat stationary evacuated CPC-collector for process heat applications
  • Author: Buttinger, F.;
    Beikircher, T.;
    Proll, M.;
    Scholkopf, W.
  • Found In: Solar energy. VOL 84; NUMBER 7, ; 2010, 1166-1174
  • Journal Title: Solar energy.
  • Subjects: Electrical and Electronic Engineering; Mechanical Engineering; Civil Engineering; LCC: HN690; Dewey: 621.4705 621
  • Publication Details: Elsevier Science B.V., Amsterdam.
  • Language: English
  • Abstract: For the economical supply of solar process heat at temperatures between 120 and 150degreeC a new non-tracking, flat, low-concentrating collector has been developed. The new collector is an edge ray collector with a concentration of 1.8 and inert gas filling, existing of parallel mounted absorber-reflector units, aligned in east-west direction. The basic concept is the integration of an absorber tube and reflectors inside a low pressure enclosure. Asymmetrical reflectors below the headers with a concentration of 0.6X provide extra radiation and prevent longitudinal radiation losses. To suppress heat losses due to gas-convection inside, air or inert gas like krypton at a pressure below 10mbar is used. A prototype, with an aperture area of 2.0m2, was tested in Munich and showed efficiencies of about 50% for krypton at 0.01bar at a temperature of 150degreeC with a radiation of 1000W/m2 (900W/m2 direct, ambient temperature 20degreeC).
  • Identifier: Journal ISSN: 0038-092X
  • Publication Date: 2010
  • Physical Description: Electronic
  • Accrual Information: Monthly
  • Shelfmark(s): 8327.200000
  • UIN: ETOCRN271965806

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