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Performance Analysi...
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
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- Latz, Gunnar, 1984 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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Erlandsson, Olof (author)
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Skåre, Thomas (author)
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Contet, Arnaud (author)
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- Andersson, Sven B, 1952 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Munch, Karin, 1954 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2016-06-29
- 2016
- English.
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In: Energies. - : MDPI AG. - 1996-1073 .- 1996-1073. ; 9:7, s. 495-
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Abstract
Subject headings
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- 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.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- piston expander
- waste-heat recovery (WHR)
- Rankine cycle
Publication and Content Type
- art (subject category)
- ref (subject category)
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