Indirect-fired gas turbine bottomed with fuel cell

Patent · Sun Jan 01 00:00:00 EST 1995

OSTI ID:870062

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

---

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: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• 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

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