Indirect-fired gas turbine bottomed with fuel cell

Patent · Sat Dec 31 23:00:00 EST 1994

OSTI ID:870062

Micheli, Paul L ^[1]; Williams, Mark C ^[1]; Parsons, Edward L ^[1]

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1. Morgantown, WV

An indirect-heated gas turbine cycle is bottomed with a fuel cell cycle with the heated air discharged from the gas turbine being directly utilized at the cathode of the fuel cell for the electricity-producing electrochemical reaction occurring within the fuel cell. The hot cathode recycle gases provide a substantial portion of the heat required for the indirect heating of the compressed air used in the gas turbine cycle. A separate combustor provides the balance of the heat needed for the indirect heating of the compressed air used in the gas turbine cycle. Hot gases from the fuel cell are used in the combustor to reduce both the fuel requirements of the combustor and the NOx emissions therefrom. Residual heat remaining in the air-heating gases after completing the heating thereof is used in a steam turbine cycle or in an absorption refrigeration cycle. Some of the hot gases from the cathode can be diverted from the air-heating function and used in the absorption refrigeration cycle or in the steam cycle for steam generating purposes.

• Research Organization: LOCKHEED MARTIN ENRGY SYST INC
• DOE Contract Number: AC05-84OR21400
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 5449568
• OSTI ID: 870062
• Country of Publication: United States
• Language: English

Related Subjects

/429/
absorption
absorption refrigeration
air
air discharge
air-heating
balance
bottomed
cathode
cell
cell cycle
chemical reaction
combustor
combustor provides
completing
compressed
compressed air
cycle
direct heat
directly
discharged
diverted
electricity-producing
electrochemical
electrochemical reaction
emissions
fuel
fuel cell
function
gas
gas turbine
gases
generating
heat
heated
heated air
heated gas
heating
heating gas
hot
hot gas
hot gases
indirect
indirect heat
indirect heating
indirect-fired
indirect-fired gas
indirect-heated
nox
nox emission
occurring
portion
provide
provides
purposes
reaction
reaction occur
reaction occurring
recycle
recycle gas
reduce
refrigeration
refrigeration cycle
remaining
required
requirements
residual
residual heat
separate
steam
steam cycle
steam generating
steam turbine
substantial
substantial portion
therefrom
turbine
turbine cycle
utilized