Cogeneration-wave of the future
Cogeneration is a method for producing process steam or heat, together with electric power, which optimizes the use of the fuel input to obtain maximum energy output. Two classes of cogeneration, topping cycles, and bottoming cycles, are studied in this paper. When heat is a byproduct of an electrical generating system, it is called a topping cycle; when the electricity is a byproduct of a system's excess heat, it is a bottoming cycle. Three cogeneration plant types--reciprocating engine, gas turbine, and steam turbine--are compared. Gas turbines have a wide fuel flexibility, produce high heat output, and have low atmospheric pollution. Steam turbines have the greatest flexibility, are efficient at partial load, and have the highest heat output per unit of electricity. Rankine and Brayton steam cycles are the two most common bottoming cycles.
- OSTI ID:
- 6866202
- Journal Information:
- Spec. Eng.; (United States), Vol. 49:3
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
COGENERATION
BOTTOMING CYCLES
TOPPING CYCLES
AIR POLLUTION
BRAYTON CYCLE
COMPARATIVE EVALUATIONS
DUAL-PURPOSE POWER PLANTS
ELECTRIC POWER
ENERGY EFFICIENCY
ENGINES
FLEXIBILITY
FUELS
GAS TURBINES
OPTIMIZATION
PROCESS HEAT
RANKINE CYCLE
STEAM GENERATION
STEAM TURBINES
DEUS
EFFICIENCY
ENERGY
ENERGY SYSTEMS
HEAT
MACHINERY
MECHANICAL PROPERTIES
POLLUTION
POWER
POWER GENERATION
POWER PLANTS
TENSILE PROPERTIES
THERMODYNAMIC CYCLES
TURBINES
TURBOMACHINERY
200102* - Fossil-Fueled Power Plants- Power Cycles
425000 - Engineering- Power Cycles- (1980-)