LAPSE:2023.34123
Published Article
LAPSE:2023.34123
Diagnostic Protocol for Thermal Performance of District Heating Pipes in Operation. Part 1: Estimation of Supply Pipe Temperature by Measuring Temperature at Valves after Shutdown
Peter Lidén, Bijan Adl-Zarrabi, Carl-Eric Hagentoft
April 24, 2023
This study evaluates temperatures measured at district heating (DH) valves in manholes and their usability for non-destructively assessing the thermal performance of buried DH pipes. The study was conducted as a field test in which part of a DH network was shut down and the temperature decline in the valves was analysed in terms of absolute temperature and thermal response time from the DH pipe to the top of the valve. The calculated and measured supply pipe temperatures by the drainage valves were in good agreement, with 1% deviation. The valve measurement analysis from this study shows that the drainage valve has good potential to serve as a measurement point for assessing the thermal status of a DH network. However, the shutdown valve measurements were greatly affected by the manhole environment.
Keywords
cooling method, district heating network, non-destructive testing, polyurethane, thermal response time, valve
Suggested Citation
Lidén P, Adl-Zarrabi B, Hagentoft CE. Diagnostic Protocol for Thermal Performance of District Heating Pipes in Operation. Part 1: Estimation of Supply Pipe Temperature by Measuring Temperature at Valves after Shutdown. (2023). LAPSE:2023.34123
Author Affiliations
Lidén P: Department of Architecture and Civil Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden [ORCID]
Adl-Zarrabi B: Department of Architecture and Civil Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
Hagentoft CE: Department of Architecture and Civil Engineering, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
Journal Name
Energies
Volume
14
Issue
16
First Page
5192
Year
2021
Publication Date
2021-08-22
Published Version
ISSN
1996-1073
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Original Submission
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PII: en14165192, Publication Type: Journal Article
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LAPSE:2023.34123
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doi:10.3390/en14165192
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Apr 24, 2023
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Apr 24, 2023
 
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