LAPSE:2023.32599
Published Article
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LAPSE:2023.32599
On the Application of Small-Scale Turbines in Industrial Steam Networks
April 20, 2023
This study investigates the technical and economic feasibility of replacing throttling valves with smale-scale, oil-free turbomachinery in industrial steam networks. This is done from the perspective of the turbomachine, which has to be integrated into a new or existing process. The considered machines have a power range of P=[0.5,…,250 kW] and have been designed using real industrial data from existing processes. Design guidelines are developed, which take into account the thermodynamic process as well as engineering aspects of such a turbomachine. The results suggest that steam conditioning prior to heat exchange could be completed by small expanders to produce mechanical work, reducing exergy destruction and improving site-wide energy efficiency compared to throttling valves. Cost estimates for such machines are presented, which serve as a basis for case-specific investment calculations. The resulting payback times of less than 18 months highlight the economic potential such solutions.
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Keywords
energy recovery, Exergy, industrial steam networks, oil-free, process integration, small-scale turbomachinery
Subject
Suggested Citation
Weickgenannt A, Kantor I, Maréchal F, Schiffmann J. On the Application of Small-Scale Turbines in Industrial Steam Networks. (2023). LAPSE:2023.32599
Author Affiliations
Weickgenannt A: EPFL-LAMD, Rue Maladière 71b, 2002 Neuchâtel, Switzerland
Kantor I: EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland; HES-SO Valais-Wallis, 1950 Sion, Switzerland [ORCID]
Maréchal F: EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland [ORCID]
Schiffmann J: EPFL-LAMD, Rue Maladière 71b, 2002 Neuchâtel, Switzerland
Kantor I: EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland; HES-SO Valais-Wallis, 1950 Sion, Switzerland [ORCID]
Maréchal F: EPFL-IPESE, Rue de l’Industrie 17, 1951 Sion, Switzerland [ORCID]
Schiffmann J: EPFL-LAMD, Rue Maladière 71b, 2002 Neuchâtel, Switzerland
Journal Name
Energies
Volume
14
Issue
11
First Page
3149
Year
2021
Publication Date
2021-05-28
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14113149, Publication Type: Journal Article
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LAPSE:2023.32599
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doi:10.3390/en14113149
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[v1] (Original Submission)
Apr 20, 2023
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Apr 20, 2023
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