Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models
Information from exergy cost analysis can be effectively used in the design and management of modern district heating networks (DHNs) since it allows to properly account for the irreversibilities in energy conversion and distribution. Nevertheless, this requires the development of suitable graph-bas...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2017-03-01
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| Series: | Entropy |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1099-4300/19/3/109 |
| _version_ | 1818013939227688960 |
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| author | Stefano Coss Elisa Guelpa Etienne Letournel Olivier Le-Corre Vittorio Verda |
| author_facet | Stefano Coss Elisa Guelpa Etienne Letournel Olivier Le-Corre Vittorio Verda |
| author_sort | Stefano Coss |
| collection | DOAJ |
| description | Information from exergy cost analysis can be effectively used in the design and management of modern district heating networks (DHNs) since it allows to properly account for the irreversibilities in energy conversion and distribution. Nevertheless, this requires the development of suitable graph-based approaches that are able to effectively consider the network topology and the variations of the physical properties of the heating fluid on a time-dependent basis. In this work, a formulation of exergetic costs suitable for large graph-based networks is proposed, which is consistent with the principles of exergetic costing. In particular, the approach is more compact in comparison to straightforward approaches of exergetic cost formulation available in the literature, especially when applied to fluid networks. Moreover, the proposed formulation is specifically considering transient operating conditions, which is a crucial feature and a necessity for the analysis of future DHNs. Results show that transient effects of the thermodynamic behavior are not negligible for exergy cost analysis, while this work offers a coherent approach to quantify them. |
| first_indexed | 2024-04-14T06:39:28Z |
| format | Article |
| id | doaj.art-c2d07886a4994348b188b5d8508d7f65 |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-04-14T06:39:28Z |
| publishDate | 2017-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-c2d07886a4994348b188b5d8508d7f652022-12-22T02:07:22ZengMDPI AGEntropy1099-43002017-03-0119310910.3390/e19030109e19030109Formulation of Exergy Cost Analysis to Graph-Based Thermal Network ModelsStefano Coss0Elisa Guelpa1Etienne Letournel2Olivier Le-Corre3Vittorio Verda4Department of Energy, Politecnico di Torino, Turin 10129, ItalyDepartment of Energy, Politecnico di Torino, Turin 10129, ItalyDepartment of Research and Innovation, Veolia VERI, Limay 78520, FranceDepartment of Energy Systems and Environment, Ecole des Mines de Nantes, Nantes 44300, FranceDepartment of Energy, Politecnico di Torino, Turin 10129, ItalyInformation from exergy cost analysis can be effectively used in the design and management of modern district heating networks (DHNs) since it allows to properly account for the irreversibilities in energy conversion and distribution. Nevertheless, this requires the development of suitable graph-based approaches that are able to effectively consider the network topology and the variations of the physical properties of the heating fluid on a time-dependent basis. In this work, a formulation of exergetic costs suitable for large graph-based networks is proposed, which is consistent with the principles of exergetic costing. In particular, the approach is more compact in comparison to straightforward approaches of exergetic cost formulation available in the literature, especially when applied to fluid networks. Moreover, the proposed formulation is specifically considering transient operating conditions, which is a crucial feature and a necessity for the analysis of future DHNs. Results show that transient effects of the thermodynamic behavior are not negligible for exergy cost analysis, while this work offers a coherent approach to quantify them.http://www.mdpi.com/1099-4300/19/3/109graph-based modelsexergythermoeconomicsexergy costingdistrict heating |
| spellingShingle | Stefano Coss Elisa Guelpa Etienne Letournel Olivier Le-Corre Vittorio Verda Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models Entropy graph-based models exergy thermoeconomics exergy costing district heating |
| title | Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models |
| title_full | Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models |
| title_fullStr | Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models |
| title_full_unstemmed | Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models |
| title_short | Formulation of Exergy Cost Analysis to Graph-Based Thermal Network Models |
| title_sort | formulation of exergy cost analysis to graph based thermal network models |
| topic | graph-based models exergy thermoeconomics exergy costing district heating |
| url | http://www.mdpi.com/1099-4300/19/3/109 |
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