• Title/Summary/Keyword: 스위스롤 연소기

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Effect of Scale and Geometry on the Performance of Heat-Recirculating Swiss roll combustors for Micro Power Generation Applications (마이크로 동력발생용 소형 스위스롤 연소기의 크기와 형상 효과에 대한 연구)

  • Oh, Hwa-Young;Huh, Hwan-Il;Ronney, Paul D.
    • Journal of the Korean Society of Propulsion Engineers
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    • v.15 no.1
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    • pp.1-10
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    • 2011
  • Combustion and extinction limits in heat-recirculating excess enthalpy reactors employing both gas-phase and catalytic reaction have been examined with an emphasis Reynolds number (Re) effects and possible application to microscale combustion devices. In this paper, geometrically similar reactors of different physical sizes and different numbers of turns were tested with the aim of estimating for combustor characteristics. Combustion efficiency is estimated by measuring exhausted gases through the gas chromatograph. From these results the effect of scale and number of turns are demonstrated and optimal operating conditions for Swiss roll combustors are identified.

Effect of Scale and Fuel Type on Heat-recirculating Swiss-roll Combustor Performance for Fuel Cell Reformer Applications (연료전지 개질기로 활용을 위한 스위스 롤 연소기의 크기와 연료의 종류에 따른 특성연구)

  • Kim, Youn-Ho;Huh, Hwan-Il;Ronney, Paul D.
    • Journal of the Korean Society of Propulsion Engineers
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    • v.15 no.1
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    • pp.11-18
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    • 2011
  • The geometrically similar swiss roll reactors of different physical sizes were tested with the aim of independently determining the effects of Re and Da. It is found that the difference between catalytic and non-catalytic combustions extinction limits are narrowed as scale decreases. In addition to assess the importance of fuel chemistry, different families of fuels including alkanes and ethers were tested. From these results the effect of scale and fuel type on microscale reactor performance and implications for practical micro combustion devices are discussed.

Study of scale on small polyimide combustor performance (폴리이미드 재질의 소형 플라스틱 연소기의 크기에 따른 특성 연구)

  • Sin, Kang-Chang;Huh, Hwan-Il;Ronney, Paul D.
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2008.11a
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    • pp.45-48
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    • 2008
  • Micro power generators have been studying to provide high power that micro systems require. Micro power generators need micro combustor. Swiss-roll combustor has been studied about scale, geometry, material. From previous study experiments have shown that swiss-roll combustors require thin walls with low thermal conductivity for maximum performance at small scales. In this work, polyimide combustors with low thermal conductivity and thin thickness are built and tested.

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Effects of Size on the Performance of Heat-Recirculating Swiss-roll Combustors (크기에 따른 스위스 롤 형태 연소기의 성능 변화)

  • Oh, Hwa-Young;Kim, Youn-Ho;Huh, Hwan-Il;Ronney, Paul D.
    • 한국연소학회:학술대회논문집
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    • 2006.10a
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    • pp.46-49
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    • 2006
  • Extinction limits and combustion temperatures in heat-recirculating excess enthalpy reactors employing both gas-phase and catalytic reaction have been examined previously, with and emphasis Reynolds number (Re) effects and possible application to microscale combustion devices. However, Re is not the only parameter needed to characterize reactor operation. In particular, the use of a fixed reactor size implies that residence time and Re cannot be adjusted independently. To remedy this situation, in this work geometrically similar reactors of different physical sizes were tested with the aim of independently determining the effects of Re and Da. It is found that the difference between catalytic and non-catalytic combustion limits narrow as scale decreases. Moreover, to assess the importance of wall thermal conductivity, reactors of varying wall thickness were studied. From these results the effect of scale on microscale reactor performance and implications for practical microcombustion devices are discussed.

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