LAPSE:2019.0006v1
Published Article
LAPSE:2019.0006v1
Performance Analysis of a Reciprocating Piston Expander and a Plate Type Exhaust Gas Recirculation Boiler in a Water-Based Rankine Cycle for Heat Recovery from a Heavy Duty Diesel Engine
January 7, 2019
The exhaust gas in an internal combustion engine provides favorable conditions for a waste-heat recovery (WHR) system. The highest potential is achieved by the Rankine cycle as a heat recovery technology. There are only few experimental studies that investigate full-scale systems using water-based working fluids and their effects on the performance and operation of a Rankine cycle heat recovery system. This paper discusses experimental results and practical challenges with a WHR system when utilizing heat from the exhaust gas recirculation system of a truck engine. The results showed that the boiler’s pinch point necessitated trade-offs between maintaining adequate boiling pressure while achieving acceptable cooling of the EGR and superheating of the water. The expander used in the system had a geometric compression ratio of 21 together with a steam outlet timing that caused high re-compression. Inlet pressures of up to 30 bar were therefore required for a stable expander power output. Such high pressures increased the pump power, and reduced the EGR cooling in the boiler because of pinch-point effects. Simulations indicated that reducing the expander’s compression ratio from 21 to 13 would allow 30% lower steam supply pressures without adversely affecting the expander’s power output.
Record ID
Keywords
piston expander, Rankine cycle, waste-heat recovery (WHR)
Subject
Suggested Citation
Latz G, Erlandsson O, Skåre T, Contet A, Andersson S, Munch K. Performance Analysis of a Reciprocating Piston Expander and a Plate Type Exhaust Gas Recirculation Boiler in a Water-Based Rankine Cycle for Heat Recovery from a Heavy Duty Diesel Engine. (2019). LAPSE:2019.0006v1
Author Affiliations
Latz G: Division of Combustion, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg 41296, Sweden
Erlandsson O: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Skåre T: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Contet A: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Andersson S: Division of Combustion, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg 41296, Sweden
Munch K: Division of Combustion, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg 41296, Sweden
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Erlandsson O: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Skåre T: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Contet A: TitanX Engine Cooling AB, Sölvesborg 29471, Sweden
Andersson S: Division of Combustion, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg 41296, Sweden
Munch K: Division of Combustion, Department of Applied Mechanics, Chalmers University of Technology, Gothenburg 41296, Sweden
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Journal Name
Energies
Volume
9
Issue
7
Article Number
E495
Year
2016
Publication Date
2016-06-29
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en9070495, Publication Type: Journal Article
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Published Article
LAPSE:2019.0006v1
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doi:10.3390/en9070495
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[v1] (Original Submission)
Jan 7, 2019
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Jan 7, 2019
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v1
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https://psecommunity.org/LAPSE:2019.0006v1
Original Submitter
Calvin Tsay
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