LAPSE:2023.11887
Published Article
LAPSE:2023.11887
Waste Heat Recovery Systems with Isobaric Expansion Technology Using Pure and Mixed Working Fluids
February 28, 2023
Economic expedience of waste heat recovery systems (WHRS), especially for low temperature difference applications, is often questionable due to high capital investments and long pay-back periods. With a simple design, isobaric expansion (IE) machines could provide a viable pathway to utilizing otherwise unprofitable waste heat streams for power generation and particularly for pumping liquids and compression of gases. Different engine configurations are presented and discussed. A new method of modeling and calculation of the IE process and efficiency is used on IE cycles with various pure and mixed working fluids. Some interesting cases are presented. It is shown in this paper that the simplest non-regenerative IE engines are efficient at low temperature differences between a heat source and heat sink. The efficiency of the non-regenerative IE process with pure working fluid can be very high, approaching Carnot efficiency at low pressure and heat source/heat sink temperature differences. Regeneration can increase efficiency of the IE cycle to some extent. Application of mixed working fluids in combination with regeneration can significantly increase the range of high efficiencies to much larger temperature and pressure differences.
Record ID
Keywords
Compressors, heat driven pump, isobaric expansion engines, low-grade heat, mixed working fluids
Subject
Suggested Citation
Roosjen S, Glushenkov M, Kronberg A, Kersten S. Waste Heat Recovery Systems with Isobaric Expansion Technology Using Pure and Mixed Working Fluids. (2023). LAPSE:2023.11887
Author Affiliations
Roosjen S: Sustainable Process Technology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands [ORCID]
Glushenkov M: Encontech B.V. TNW/SPT, P.O. Box 217, 7500 AE Enschede, The Netherlands
Kronberg A: Encontech B.V. TNW/SPT, P.O. Box 217, 7500 AE Enschede, The Netherlands [ORCID]
Kersten S: Sustainable Process Technology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Glushenkov M: Encontech B.V. TNW/SPT, P.O. Box 217, 7500 AE Enschede, The Netherlands
Kronberg A: Encontech B.V. TNW/SPT, P.O. Box 217, 7500 AE Enschede, The Netherlands [ORCID]
Kersten S: Sustainable Process Technology, Faculty of Science and Technology, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
Journal Name
Energies
Volume
15
Issue
14
First Page
5265
Year
2022
Publication Date
2022-07-20
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en15145265, Publication Type: Journal Article
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LAPSE:2023.11887
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doi:10.3390/en15145265
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[v1] (Original Submission)
Feb 28, 2023
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Feb 28, 2023
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