Thermodynamic and Thermoeconomic investigation of an Integrated Gasification SOFC and Stirling Engine

Masoud Rokni

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Abstract

Thermodynamic and thermoeconomic investigation of a small scale Integrated Gasification Solid Oxide Fuel Cell (SOFC) and Stirling engine for combined heat and power (CHP) with a net electric capacity of 120kW have been performed. Woodchips are used as gasification feedstock to produce syngas which is then utilized for feeding the anode side of SOFC stacks. Thermal efficiency of 0.424 LHV for the plant is found to use 89.4kg/h of feedstock for producing 120kW of electricity. Thermoeconomic analysis shows that the production price of electricity is 0.1204$/kWh. Further, hot water is considered as a by-product and the cost of hot water was found to be 0.0214$/kWh. When compared to other renewable systems at similar scale, it shows that if both SOFC and Stirling engine technology emerges enter commercialization phase, then they can deliver electricity at a cost rate which is competitive with corresponding renewable systems at the same size and therefore.
Original languageEnglish
Title of host publicationProceedings of the 8th Conference on Sustainable Development of Energy, Water and Environment Systems
Number of pages23
Publication date2013
Publication statusPublished - 2013
Event8th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2013) - Dubrovnik, Croatia
Duration: 22 Sep 201327 Sep 2013
Conference number: 8
http://www.dubrovnik2013.sdewes.org/

Conference

Conference8th Conference on Sustainable Development of Energy, Water and Environment Systems (SDEWES 2013)
Number8
CountryCroatia
CityDubrovnik
Period22/09/201327/09/2013
Internet address

Keywords

  • Gasification
  • Stirling
  • SOFC
  • Fuel cell
  • Hybrid cycle
  • Thermoeconomy

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