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U.S. Department of Energy
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Cogeneration: back on the front burner

Journal Article · · Energy (Stamford, Conn.); (United States)
OSTI ID:6753935

State-of-the-art technology for cogeneration includes: Process steam supplied by back pressure of extraction steam-turbine generators; Gas turbines and waste-heat boilers; Diesel engines and waste-heat boilers. In addition, there are a variety of combinations and permutations of state-of-the-art technology such as combined cycles exemplified by gas turbines combined with steam cycles, ''tri-generation'' involving diesel engines to supply shaft power, jacket engines to supply shaft power, jacket cooling water for process heating use, and hot exhaust gases for space heating or to generate steam in waste-heat boilers. Energy savings attributable to cogeneration have averaged 15-20%. Typical investments required for coal-fired steam-turbine cogeneration facilities are on the order of $25 million for a facility consuming 250 million Btu/hour and some analysts see cogeneration supplying 30% of industrial power by the mid-80's. A tabulation summarizes energy savings if cogeneration were implemented in selected plants in the food, textile, pulp and paper, chemical, andnd petroleum refining sectors of industry.

OSTI ID:
6753935
Journal Information:
Energy (Stamford, Conn.); (United States), Journal Name: Energy (Stamford, Conn.); (United States) Vol. 6:3; ISSN ENGYD
Country of Publication:
United States
Language:
English