Effects of steam addition and/or injection on the combustion characteristics: A review

Due to increasing global energy demand and the fact that a major source of required is generated from fossil fuels, combustion process has turned into topic interest in converting fuels energy. An ideal system one can combine high engine efficiency with low fuel consumption emissions. Increasing humidity technique used by researchers for influencing process. The present study aims review previously conducted researches this regard. Based on viewpoints these researches, reviewed studies were categorized four groups: case used, methodology applied, design guidelines considered, performance parameters studied. It be concluded articles NOx reduction most significant advantage process, led widespread use method. other studied emissions either remained constant or their respective increases negligible.