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C 중유의 황 함유량에 따른 CO<sub>2</sub> 배출 특성
임완규,도진우,황인하,하종한,이상섭,Lim, Wan-Gyu,Doe, Jin-Woo,Hwang, In-Ha,Ha, Jong-Han,Lee, Sang-Sup 한국대기환경학회 2015 한국대기환경학회지 Vol.31 No.4
Bunker C fuel oil is a high-viscosity oil obtained from petroleum distillation as a residue. The sulfur content of bunker C fuel oil is limited to 4.0% or even lower to protect the environment. Because bunker C fuel oil is burned in a furnace or boiler for the generation of heat or used in an engine for the generation of power, carbon dioxide is emitted as a result of combustion. The objective of this study is to investigate $CO_2$ emission characteristics of bunker C fuel oil by sulfur contents. Calorific values and carbon contents of the fuels were measured using the oxygen bomb calorimeter method and the CHN elemental analysis method, respectively. Sulfur and hydrogen contents, which were used to calculate the net calorific value, were also measured and then net calorific values and $CO_2$ emission factors were determined. The results showed that hydrogen content increases and carbon content decreases by reducing sulfur contents for bunker C fuel oil with sulfur contents less than 1.0%. For sulfur contents between 1.0% and 4.0%, carbon content increases as sulfur content decreases but there is no evident variation in hydrogen content. Net calorific value increases by reducing sulfur contents. $CO_2$ emission factor, which is calculated by dividing carbon content by net calorific value, decreases as sulfur content decreases for bunker C fuel oil with sulfur contents less than 1.0% but it showed relatively constant values for sulfur contents between 1.0% and 4.0%.
윤활 기유로서의 대두유 원료 지방선 메틸에스테르에 대한 윤활 및 마모 특성 연구
임완규(Wangyu Lim),임태윤(Taeyoon Lim),김신(Shin Kim),권종수(Jongsoo Kwon),송홍옥(Heungok Song),신성철(Seoungchul Shin) 한국트라이볼로지학회 2007 한국트라이볼로지학회 학술대회 Vol.2007 No.11
The lubrication properties and wear preventive characteristics of soy bean oil based fatty acid methyl esters(FAMEs) as a lubricating base oil were examined using the four ball tester. The lubrication and wear properties of FAMEs are similar or somewhat better than petroleum base oils. Acid numbers were measured to investigate acidity variation after wear test. Petroleum base oils have shown no change in acid number but there was an increase of acid number for FAMEs after wear test. Particulate formation analysis was performed using membrane filters after wear test. There was no particulate observed for petroleum base oil but black particulate which is thought as soot was observed on the membrane filter of FAMEs.