Title: A technical review on waste heat recovery from compression ignition engines using organic Rankine cycle
Abstract: The study deals with the utilization of organic Rankine cycle (ORC) to recover waste heat from compression ignition (CI) engines and produce additional power output. A review on the potential of waste heat recovery from exhaust gas, water jackets and intake charge air of CI engines was carried out. Research challenges associated with engine-ORC technology such as selection of organic working fluid, type of evaporator/condenser, back pressure due to additional ORC components in the exhaust line are discussed. The evaporator for the engine-ORC needs to be designed by keeping a view of variable exhaust gas heat source (variable temperature and mass flow rate profiles). It is explored from the literature study that engine-ORC system could operate with the maximum thermal efficiency range about 10–25%. The main reason for low thermal efficiency could be due to lower operating temperatures in the ORC. However, the overall efficiency of combined system (engine and engine-ORC with exhaust gas/water jackets/intake air/use of hot water from condenser for heating/refrigeration application) is significantly higher (60–90%) than the conventional standalone ORC system (10–25%). It is also found that R245fa is the better organic working fluid for engine-ORC application based on better performance, availability, economic and environmental aspects.
Publication Year: 2017
Publication Date: 2017-08-17
Language: en
Type: review
Indexed In: ['crossref']
Access and Citation
Cited By Count: 113
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