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Energies 2016, 9(11), 928; doi:10.3390/en9110928

Comparison of Cooling System Designs for an Exhaust Heat Recovery System Using an Organic Rankine Cycle on a Heavy Duty Truck

1
Daimler AG, Group Research & Advanced Engineering Powertrain, 70546 Stuttgart, Germany
2
Chair of Engineering Thermodynamics and Transport Processes (LTTT), Center of Energy Technology (ZET), University of Bayreuth, 95440 Bayreuth, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Fredrik Haglind
Received: 30 August 2016 / Revised: 27 October 2016 / Accepted: 1 November 2016 / Published: 9 November 2016
(This article belongs to the Special Issue Waste Heat Recovery)
View Full-Text   |   Download PDF [3282 KB, uploaded 9 November 2016]   |  

Abstract

A complex simulation model of a heavy duty truck, including an Organic Rankine Cycle (ORC) based waste heat recovery system and a vehicle cooling system, was applied to determine the system fuel economy potential in a typical drive cycle. Measures to increase the system performance were investigated and a comparison between two different cooling system designs was derived. The base design, which was realized on a Mercedes-Benz Actros vehicle revealed a fuel efficiency benefit of 2.6%, while a more complicated design would generate 3.1%. Furthermore, fully transient simulation results were performed and are compared to steady state simulation results. It is shown that steady state simulation can produce comparable results if averaged road data are used as boundary conditions. View Full-Text
Keywords: Organic Rankine Cycle (ORC); heavy-duty truck; cooling system; ethanol; 1-D simulation; heat recovery Organic Rankine Cycle (ORC); heavy-duty truck; cooling system; ethanol; 1-D simulation; heat recovery
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Stanzel, N.; Streule, T.; Preißinger, M.; Brüggemann, D. Comparison of Cooling System Designs for an Exhaust Heat Recovery System Using an Organic Rankine Cycle on a Heavy Duty Truck. Energies 2016, 9, 928.

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