17. Greenization Factor of a Turbojet Engine

The environmental issues associated with energy consumption and increasing energy demand are a major concern of this century. To reduce environmental impact and achieve more sustainable society, novel approaches are developed day by day. In the current chapter, a novel approach to evaluate environmental impact of a turbojet engine is presented. Recently defined, a genuine indicator, namely, greenization factor, is a measure to understand contribution of the system improvement to environmental impact reduction. The current study aims to derive this indicator defined for other energy conversion systems to assess propulsion systems from the same perspective. For this purpose, an application to a turbojet engine is also introduced for a better understanding of the methodology.