Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes
This paper focuses on the experimental characterization of horizontal, spiral heat exchangers used for heat recovery from sewage pipes. Such non-intrusive heat exchanger configurations are appealing for this application, but they often exhibit reduced heat exchange performances compared to more comp...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Thermal Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23010766 |
| _version_ | 1797422574002503680 |
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| author | Z. Mokhtar J. Vanden Berghe J. Blondeau |
| author_facet | Z. Mokhtar J. Vanden Berghe J. Blondeau |
| author_sort | Z. Mokhtar |
| collection | DOAJ |
| description | This paper focuses on the experimental characterization of horizontal, spiral heat exchangers used for heat recovery from sewage pipes. Such non-intrusive heat exchanger configurations are appealing for this application, but they often exhibit reduced heat exchange performances compared to more compact designs. To compare the performance of this configuration with that of an ideal counter-flow heat exchanger, a representative test setup was constructed. As the sewer pipes are generally not completely filled, tests were conducted using three different fillings (100%, 50%, 33%) and a filling parameter z was introduced in the heat transfer equations. Correction factors to be applied in the Logarithmic Mean Temperature Difference (LMTD) design method for this specific spiral configuration were derived from the test results. It was found that the filling of the sewer pipe has minimal impact on the correction factor, which ranges between 0.78 and 0.83. The average value of 0.81 is recommended for design purposes. |
| first_indexed | 2024-03-09T07:34:15Z |
| format | Article |
| id | doaj.art-655a784c20a84f44add0515fe32f5b3d |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-09T07:34:15Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-655a784c20a84f44add0515fe32f5b3d2023-12-03T05:41:35ZengElsevierCase Studies in Thermal Engineering2214-157X2023-12-0152103770Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipesZ. Mokhtar0J. Vanden Berghe1J. Blondeau2Thermo and Fluid dynamics (FLOW), Faculty of Engineering, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium; Brussels Institute for Thermal-fluid Systems and Clean Energy (BRITE), Vrije Universiteit Brussel (VUB) and Université Libre de Bruxelles (ULB), BelgiumThermo and Fluid dynamics (FLOW), Faculty of Engineering, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium; Brussels Institute for Thermal-fluid Systems and Clean Energy (BRITE), Vrije Universiteit Brussel (VUB) and Université Libre de Bruxelles (ULB), BelgiumCorresponding author at: Thermo and Fluid dynamics (FLOW), Faculty of Engineering, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium.; Thermo and Fluid dynamics (FLOW), Faculty of Engineering, Vrije Universiteit Brussel (VUB), Pleinlaan 2, 1050 Brussels, Belgium; Brussels Institute for Thermal-fluid Systems and Clean Energy (BRITE), Vrije Universiteit Brussel (VUB) and Université Libre de Bruxelles (ULB), BelgiumThis paper focuses on the experimental characterization of horizontal, spiral heat exchangers used for heat recovery from sewage pipes. Such non-intrusive heat exchanger configurations are appealing for this application, but they often exhibit reduced heat exchange performances compared to more compact designs. To compare the performance of this configuration with that of an ideal counter-flow heat exchanger, a representative test setup was constructed. As the sewer pipes are generally not completely filled, tests were conducted using three different fillings (100%, 50%, 33%) and a filling parameter z was introduced in the heat transfer equations. Correction factors to be applied in the Logarithmic Mean Temperature Difference (LMTD) design method for this specific spiral configuration were derived from the test results. It was found that the filling of the sewer pipe has minimal impact on the correction factor, which ranges between 0.78 and 0.83. The average value of 0.81 is recommended for design purposes.http://www.sciencedirect.com/science/article/pii/S2214157X23010766Waste water heat recoverySpiral heat exchangerPartially filled pipesCorrection factorLMTD |
| spellingShingle | Z. Mokhtar J. Vanden Berghe J. Blondeau Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes Case Studies in Thermal Engineering Waste water heat recovery Spiral heat exchanger Partially filled pipes Correction factor LMTD |
| title | Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| title_full | Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| title_fullStr | Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| title_full_unstemmed | Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| title_short | Experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| title_sort | experimental characterization of a spiral heat exchanger for waste water heat recovery from partially filled sewage pipes |
| topic | Waste water heat recovery Spiral heat exchanger Partially filled pipes Correction factor LMTD |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23010766 |
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