Effect of Mixing Ratio of n-heptane Fuel on the Combustion Characteristics of n-butanol Fuel

Lim, Young Chan; Suh, Hyun Kyu

doi:10.15231/jksc.2015.20.3.021

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“…그 중 바이오매스 기반의 연료인 butanol은 기존 연구에 많 이 사용되던 ethanol에 비해 발열량이 높고, 상대적으로 쉽게 추출 가능한 장점이 있기 때문에 대체 연료 연구 에 많이 적용되고 있다 (14,15) . 하지만, butanol 연료를 적 용한 선행 연구들은 NTC(Negative Temperature Coefficient) 영역과 점화 지연(Ignition delay)에 관한 연소 특 성 연구에 치중되어 있고, 높은 분위기 조건에서의 연소 및 배출물 특성의 규명이 미흡한 상태이다 (10,16) . …”

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Effect of High Temperature and Pressure Conditions on the Combustion Characteristics of n-butanol and n-heptane Fuel

Lim¹,

Suh²

2016

Journal of ILASS-Korea

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The effect of high ambient temperature and pressure conditions on the combustion performance of n-butanol, n-heptane and its mixing fuel (BH 20) were studied in this work. To reveal this, the closed homogeneous reactor model applied and 1000-1200 K of the initial temperature, 20-30 atm of initial pressure and 1.0 of equivalence ratio were set to numerical analysis. It was found that the results of combustion temperature was increased and the ignition delay was decreased when the ambient conditions were elevated since the combustion reactivity increased at the high ambient conditions. On the contrary, under the low combustion temperature condition, the combustion pressure was more influenced by the ambient temperature in the same ambient conditions. In addition, the total mass and the mass density of tested fuels were influenced by the ambient pressure and temperature. Also, soot generation of mixing fuel was decreased than n-heptane fuel due to the oxygen content of n-butanol fuel.

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