A Study on the Generating Efficiency and NO x Emissions of a 30kW Gas Engine Generator with Hydrogen Addition

ABSTRACT This study is about characteristics of generating efficiency and NO x emissions of a 30 kW gas engine generator in case of using model biogas with hydrogen addition. In this case, both generating efficiency and NO x emissions are lower than the case of using urban gas (LNG). However, generating efficiency and NO x emissions are higher than the case of using model biogas only. It means that adding hydrogen which has a high flame propagation velocity has the possibility to improve the generating efficiency, but simultaneously it is also able to increase the NO x emissions of a gas engine generator.KEY WORDS : Generating efficiency(발전효율), NO x emissions(질소산화물 배출량), Gas engine generator (가스엔진 발전기), Biogas(바이오가스), Hydrogen addition(수소 첨가) 한국수소 및 신에너지학회 논문집(2011. 6), 제22권 제3호Trans. of the Korean Hydrogen and New Energy Society(2011. 6), Vol. 22, No. 3, pp. 313~318 † Corresponding author : soonhosong@yonsei.ac.kr [ 접수일 : 2011.4.20 수정일 : 2011.6.20 게재확정일 : 2011.6.20 ] Nomenclature BTDC : before top dead center, ° (degree)EAR : excessive air ratio, λ (lambda)NO