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Energy and cost savings results for advanced technology systems from the Cogeneration Technology Alternatives Study /CTAS/The Cogeneration Technology Alternatives Study (CTAS), a program undertaken to identify the most attractive advanced energy conversion systems for industrial cogeneration applications in the 1985-2000 time period, is described, and preliminary results are presented. Two cogeneration options are included in the analysis: a topping application, in which fuel is input to the energy conversion system which generates electricity and waste heat from the conversion system is used to provide heat to the process, and a bottoming application, in which fuel is burned to provide high temperature process heat and waste heat from the process is used as thermal input to the energy conversion system which generates energy. Steam turbines, open and closed cycle gas turbines, combined cycles, diesel engines, Stirling engines, phosphoric acid and molten carbonate fuel cells and thermionics are examined. Expected plant level energy savings, annual energy cost savings, and other results of the economic analysis are given, and the sensitivity of these results to the assumptions concerning fuel prices, price of purchased electricity and the potential effects of regional energy use characteristics is discussed.
Document ID
Document Type
Conference Paper
Sagerman, G. D.
(NASA Lewis Research Center Cleveland, OH, United States)
Barna, G. J.
(NASA Lewis Research Center Cleveland, OH, United States)
Burns, R. K.
(NASA Lewis Research Center Cleveland, Ohio, United States)
Date Acquired
August 9, 2013
Publication Date
June 1, 1979
Subject Category
Energy Production And Conversion
Report/Patent Number
AIAA PAPER 79-1000
Meeting Information
American Institute of Aeronautics and Astronautics, Terrestrial Energy Systems Conference(Orlando, FL)
Accession Number
Funding Number(s)
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