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Heat and electrical power cogeneration retrofitting technique. Costs and benefits

Conference ·
OSTI ID:5075403
A cost-benefit analysis is made of techniques for retrofitting existing power plants to obtain heat energy for district heating and cooling systems (DHCS). The five generic methologies for obtaining that heat energy include: condensing pressure and extraction volume increase retrofit on the existing steam turbines; intermediate cross-over extraction retrofit on the existing steam turbines; recuperator boiler retrofit on existing gas turbines; installation of new specially manufactured variable extractions steam turbines; and conversion of existing steam boilers in hot water boilers. Each of the above options was reviewed to ascertain the effects on the existing utility systems. It was established that the use of a 100% cogeneration in a DHCS system is not economical, and 10 to 40% of the heat energy should be provided in a pure heat production. It appears that the future development of the DHCS will require more heat energy than can be provided by the new electric generating units which will work in cogeneration, and it is clear that the involvement of the existing units will be done by retrofitting them with reasonable costs and not replacing them with new units. (LCL)
Research Organization:
Argonne National Lab., Ill. (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5075403
Report Number(s):
CONF-780109-7
Country of Publication:
United States
Language:
English

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Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200100* -- Fossil-Fueled Power Plants-- Power Plants & Power Generation
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320600 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- (1980-)
BOILERS
CO-GENERATION
CONSTRUCTION
COST BENEFIT ANALYSIS
DISTRICT HEATING
DUAL-PURPOSE POWER PLANTS
ECONOMICS
FEASIBILITY STUDIES
GAS TURBINES
HEATING
POWER GENERATION
POWER PLANTS
RETROFITTING
STEAM GENERATION
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY