CHP 시스템용 15㎾급 천연가스엔진의 성능 최적화 = An Optimization of 15㎾ Class Gas Engine for CHP system

다국어 초록 (Multilingual Abstract)

CHP (combined heat & power generation) system produces heat and electricity simultaneously in one process with high efficiency. Also, carbon dioxide emissions can be reduced as well. In the present, micro scale CHP systems under tens kWs are applied in small buildings. However, there have been few models in this class of CHP system. In the present study, a gas engine with nominal output of 15 kilowatts at 1,800rpm was developed from conventional agricultural diesel engine and optimized for micro CHP package. To increase the engine thermal efficiency, miller cycle was adapted by modification of earn shaft profile, and enhanced swirl was also introduced by modifying the intake gasket geometry. The gas engine shows 33.94% of thermal efficiency and Jess than 10 ppm of NOx emission at 13% Oxygen condition under stoichiometric combustion, and 35.52% of thermal efficiency and about 130 ppm of NOx emissions at 13% oxygen conditions under lean combustion.

목차 (Table of Contents)

• Abstract
  
• 1. 서론
  
• 2. 실험장치 및 방법
  
• 3. 실험결과 및 고찰
  
• 4. 결론
  
• 참고문헌