A Waste Heat Recovery System for Light Duty Diesel Engines
- ORNL
In order to achieve proposed fuel economy requirements, engines must make better use of the available fuel energy. Regardless of how efficient the engine is, there will still be a significant fraction of the fuel energy that is rejected in the exhaust and coolant streams. One viable technology for recovering this waste heat is an Organic Rankine Cycle. This cycle heats a working fluid using these heat streams and expands the fluid through a turbine to produce shaft power. The present work was the development of such a system applied to a light duty diesel engine. This lab demonstration was designed to maximize the peak brake thermal efficiency of the engine, and the combined system achieved an efficiency of 44.4%. The design of the system is discussed, as are the experimental performance results. The system potential at typical operating conditions was evaluated to determine the practicality of installing such a system in a vehicle.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). National Transportation Research Center (NTRC)
- Sponsoring Organization:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 992104
- Journal Information:
- Proceedings of the Institution of Mechanical Engineers - Part D: Journal of Automobile Engineering, Journal Name: Proceedings of the Institution of Mechanical Engineers - Part D: Journal of Automobile Engineering
- Country of Publication:
- United States
- Language:
- English
Similar Records
Investigating potential light-duty efficiency improvements through simulation of turbo-compounding and waste-heat recovery systems
RC-1 organic Rankine bottoming cycle for an adiabatic diesel engine. Final report