Overview of recent developments and the future of organic Rankine cycle applications for exhaust energy recovery in highway truck engines

Abstract

Overall developments in internal combustion engines suggest that the ORC system recovers exhaust heat for further use, increases system performance, and decreases adverse environmental impacts, including greenhouse gas emissions, and particulate matter. This paper presents an overview of crucial advancements in the field of ORC application in commercial vehicles for WHR and continuing developments towards clean fuels and emission regulatory standards. The is review centred on the potential of ORC technology, its applications in highway truck engines heat recovery, and most notably, the bottlenecks associated with incorporating ORC technology into commercial vehicles exhaust energy recovery. Furthermore, a range of distinct engine operating patterns is reported in respect of average speeds of trucks to assess the appropriate operating points for the chosen application.

Bioethanol produced from regenerative wooden resource to operate an organic Rankine cycle-waste heat recovery system in case of a tractor propulsion Diesel engine: preliminary simulation results

“…A step even forward could be the use of the heat stored by the engine lubricating agent, used also in terms of preheating the Rankine organic agent. As a consequence, the whole installation efficiency could probably increase by certain percentage units, as already experimented, together with ensuring low emissions' levels and classic fuel economy [17].…”

Steady State Testing of an Organic Rankine Cycle Designed for Exhaust Heat Recovery Applications in Truck Engines

“…ORC system as a means of exhausting heat recovery has been implemented in some industrial procedures and on-board ship vessels with more than 100 plants operating to generate electricity commercially worldwide [2]. However, the application of this ORC technology on-board mobile vehicles is still a matter of academic studies and laboratory testing because of the adverse effects of added weight and space restrictions on the vehicles [3,4]. Some experimental studies on applying ORC systems for exhaust heat recovery are reported in this study.…”

Performance Assessment of a Heat Recovery Unit Utilizing Turbine with Variable Inlet Guide Vanes Configuration for Application in Passenger Vehicles

“…Today's concerns about these negative impacts of combustion exhaust emissions; increasingly stringent emission regulations benchmarked on the quantity of CO 2 expulsion from ICEs; and the need for sustainable and efficient deployment of fossil fuel resources in ICEs control the present trends of research and development (R & D) in automobile industries. Therefore, recapturing some portion of the exergy in this waste heat stream, which otherwise is exhausted to the environment, not only mitigate exhaust emissions and their adverse effects but as well lead to thermal efficiency improvement of the model through the generation of additional power to augment the existing one without extra-fuel consumption by the IC engine [2].…”