Energetic and exergetic performance assessment of a marine engine with measurement of Co2 emission

Abstract

Nowadays, requirements posed by global warming and climate change especially have become imperative to reduce CO2 emissions for all sectors. The maritime sector is a rapidly growing one, and the global emission effect of this sector has reached to the level of 3%. Besides, this sector has important legal obligations. In this respect, the maritime industry having intensive consumption of fossil fuels including mainly diesel fuel should develop energy-efficient solutions. For this purpose, in this study, first energy and exergy analyses of a diesel engine under different loads were made, and CO2 emission loads of engine were examined separately. According to results, energy and exergy efficiencies of full load were found to be 41, 12%, and 30, 71%, respectively. At the end of the study, the improvement potential of the engine performance was evaluated together with the reduction of the emission potential. Additionally, some recommendations about use of exergy analysis in the maritime applications were made.