The effect of thermal matching on the thermodynamic performance of gas turbine and IC engine cogeneration systems

Journal Article · Thu Jan 01 04:00:00 EST 1987 · J. Eng. Gas Turbines Power; (United States)

DOI:https://doi.org/10.1115/1.3240004· OSTI ID:5651464

Baughn, J W; Bagheri, N

Computer models have been used to analyze the thermodynamic performance of a gas turbine (GT) cogeneration system and an internal combustion engine (IC) cogeneration system. The purpose of this study was to determine the effect of thermal matching of the load (i.e., required thermal energy) and the output steam fraction (fraction of the thermal output, steam and hot water, which is steam) on the thermodynamic performance of typical cogeneration systems at both full and partial output. The thermodynamic parameters considered were: the net heat rate (NHR), the power-to-heat ratio (PHR), and the fuel savings rate (FSR). With direct use (the steam fractions being different), the NHR of these two systems is similar at full output, the NHR of the IC systems is lower at partial output, and the PHR and the FSR of the GT systems are lower than those of the IC systems over the full range of operating conditions. With thermal matching (to produce a given steam fraction) the most favorable NHR, PHR, and FSR depend on the method of matching the load to the thermal output.

• Research Organization: Dept. of Mechanical Engineering, Univ. of California, Davis, CA 95616
• OSTI ID: 5651464
• Journal Information: J. Eng. Gas Turbines Power; (United States), Journal Name: J. Eng. Gas Turbines Power; (United States) Vol. 109:1; ISSN JETPE
• Country of Publication: United States
• Language: English

Related Subjects

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99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COGENERATION
COMPUTERIZED SIMULATION
DEUS
EFFICIENCY
ENERGY EFFICIENCY
ENERGY SYSTEMS
ENGINES
GAS TURBINES
HEAT ENGINES
HEATING LOAD
INTERNAL COMBUSTION ENGINES
MACHINERY
POWER GENERATION
SIMULATION
STEAM GENERATION
THERMODYNAMICS
TURBINES
TURBOMACHINERY