Comparative performance of two types of evacuated tube solar collectors in a residential heating and cooling system. The progress report [electronic resource].
- Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 1979.
- Physical Description:
- Pages: 5 : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Two types of evacuated tube solar collectors have been operated in space heating, cooling and domestic hot water heating systems in Colorado State University Solar House I. An experimental collector from Corning Glass Works supplied heat to the system from January 1977 through February 1978, and an experimental collector from Philips Research Laboratory, Aachen, which is currently in use, has been operating since August 1978. A flat absorber plate inside a single-walled glass tube is used in the Corning design, whereas heat is conducted through a single glass wall to an external heat exchanger plate in the Philips collector. In comparison with conventional flat-plate collectors, both types show reduced heat losses and improved efficiency. For space heating and hot water supply in winter, the solar delivery efficiency of the Corning collector ranged from 49% to 60% of the incident solar energy. The portion of the space heating and domestic hot water load carried by solar energy through fall and winter ranged from 50% to 74%, with a four-month contribution of 61% of the total requirements. Data on the Philips collector are currently being analyzed.
- Report Numbers:
- E 1.99:coo-2577-18
E 1.99: conf-790541-52
- Other Subject(s):
- Published through SciTech Connect.
International Solar Energy Society meeting, Atlanta, GA, USA, 28 May 1979.
Duff, W.S.; Lof, G.O.G.; Pratt, R.G.; Conway, T.M.
Colorado State Univ., Fort Collins (USA)
- Funding Information:
View MARC record | catkey: 14798933