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윤석주 ( Suckju Yoon ),황창영 ( Changyeong Hwang ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
This paper presents the possibility of bio-diesel which has high viscosity and oxygenated fuel by gun-type burner. The experiments were carried out for the comparison of the spray characteristics of the kerosene, lard, and soybean fuel injected from the pressure swirl nozzle of gun-type burner. The spray images were acquired by the high speed camera and changes of injection pressures and blending rate. In the horizontality direction spray different from vertical direction spray, the flow of single spray in downstream was found. This flow was appeared by the generation of primary spray and secondary spray. The primary spray has an influence of initial spray condition and secondary spray was shown by correlation of primary spray and nearby air.
오영택(Youngtaig Oh),윤석주(Suckju Yoon),최승훈(Seunghun Choi),최영하(Youngha Choi) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study, we investigated the spray characteristics of bio-diesel blended fuel. The experiments were performed mixing rates and injection pressures on the spray behavior. Bio-diesel blended fuel have different spray pattern due to the viscosity.
황창영 ( Changyeong Hwang ),윤석주 ( Suckju Yoon ) 한국액체미립화학회 2016 한국액체미립화학회 학술강연회 논문집 Vol.2016 No.-
In this study, the experiments were carried out for the comparison of the flame shape of biodiesel as an alternative fuel from gun type burner using on the domestic oil burner. The burner nozzle is pressure swirl nozzle in this experiment. To compare the flame shape macroscopically, flow rate, particle size were measured with biodiesel-kerosene blending rate at 0.8MPa. The results showed that flow rate were increased and particle size were also increased with increasing the biodiesel-kerosene blending rate. When the ignition was tried, a part of blending rate could not be burned and white area of biodiesel flame were larger than kerosene flame on blending rate 5, 10%.
바이오 디젤 적용 압력식 스월노즐의 분무입경 특성 연구
황창영 ( Changyeong Hwang ),윤석주 ( Suckju Yoon ) 한국액체미립화학회 2016 한국액체미립화학회 학술강연회 논문집 Vol.2016 No.-
This study provides the effect of biodiesel blending rate and injection pressure on the atomization of spray droplets from a pressure swirl nozzle used for biodiesel. Lard, beef, soybean and kerosene used in this experiment that has been performed to confirm the trend and laser diffraction spectroscope(LDS) was used for the measurement of the horizontal spray droplet diameters. The results showed that the SMD of primary, secondary spray were increased with increasing the biodiesel blending ratio but that were decreased with increasing the injection pressure.
미립화 및 분무장치 2 : 바이오디젤의 점도와 표면장력 측정 및 분석
문평권 ( Pyeong Gwon Moon ),정회중 ( Hoijoong Jung ),윤석주 ( Suckju Yoon ) 한국액체미립화학회 2015 한국액체미립화학회 학술강연회 논문집 Vol.2015 No.-
This study is conducted into initial experiment of a study on the horizontally injected spray formation using image analysis technique. And it is be closely related with domestic boiler. Fuels of domestic boiler are kerosene & different types of biodiesel. The property of fuels must be collected at cold start temperature. So, Measurement of the property in the range of 263~313K is essential for this study. Biodiesel is made of kerosene, soybean oil, lard, beef oil and has blending rate BD10, BD20, BD30, BD50, BD75. As a result of measurement and analysis, the viscosity increases as temperature decreases and blending rate increases. But the viscosity displays different trend to each blending rate and fuel type. Next, the surface tension was shown small differences on the effect of temperature. Therefore, measurement of surface tension was focused on the influence of blending rate. Lard and Soybean oil have a similar surface tension. Beef oil has low surface tension as compared with other oil