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Title: Indirect-fired gas turbine bottomed with fuel cell

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.
Inventors:
 [1];  [1];  [1]
  1. (Morgantown, WV)
Issue Date:
OSTI Identifier:
870062
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Patent Number(s):
US 5449568
Contract Number:
AC05-84OR21400
Research Org:
LOCKHEED MARTIN ENRGY SYST INC
Country of Publication:
United States
Language:
English
Subject:
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/