Thermal transpiration based pumping and power generation using solid oxide fuel cells

A. Bhat, Cory Bloomquist, Jeongmin Ahn, Paul D. Ronney

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Hydrocarbon fuels have very high energy density as compared to conventional batteries and hence are a better alternative to conventional batteries for power generation at small scale. A miniature thermochemical system for small scale power generation from hydrocarbon fuels is proposed. Any gaseous/liquid fuel processing device requires a pumping system. Due to heat and frictional losses associated with conventional pumping systems at small scales and orientation sensitivity of buoyancy based pumping systems, they are unprofitable for pumping in a miniature thermochemical system. In order to solve this problem, a thermal transpiration based pumping system is devised. A combustor is developed which can pump its own reactants by thermal transpiration without any external power supply i.e. a self-sustained pumping operation is obtained in the combustor. It is further integrated with a single chamber SOFC for power generation. This combustor can pump propane into itself at a flow rate of 40 ml/min and generate temperatures in excess of 400 °C. This temperature is high enough to initiate and sustain single chamber SOFC operation with a peak power density that can go up to 420 mW/cm2. Such a system when developed completely will have applications in MEMS and microelectronics.

Original languageEnglish (US)
Title of host publicationFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting
PublisherWestern States Section/Combustion Institute
Pages229-235
Number of pages7
Volume1
ISBN (Print)9781615676507
StatePublished - 2009
EventFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 - Irvine, United States
Duration: Oct 26 2009Oct 27 2009

Other

OtherFall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009
CountryUnited States
CityIrvine
Period10/26/0910/27/09

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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    Bhat, A., Bloomquist, C., Ahn, J., & Ronney, P. D. (2009). Thermal transpiration based pumping and power generation using solid oxide fuel cells. In Fall Technical Meeting of the Western States Section of the Combustion Institute 2009, WSS/CI 2009 Fall Meeting (Vol. 1, pp. 229-235). Western States Section/Combustion Institute.