Modelling and control of district heating networks with reduced pump utilisation
Abstract District heating systems (DHS) provide thermal energy to a range of consumers. Hence, an adequate sizing of the key elements involved in the energy supply system and their management are critical. Pumps and valves are essential components of a DHS as they ensure hydraulic operating conditio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-03-01
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| Series: | IET Energy Systems Integration |
| Online Access: | https://doi.org/10.1049/esi2.12001 |
| _version_ | 1797988508510453760 |
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| author | Hector Bastida Carlos E. Ugalde‐Loo Muditha Abyesekera Meysam Qadrdan |
| author_facet | Hector Bastida Carlos E. Ugalde‐Loo Muditha Abyesekera Meysam Qadrdan |
| author_sort | Hector Bastida |
| collection | DOAJ |
| description | Abstract District heating systems (DHS) provide thermal energy to a range of consumers. Hence, an adequate sizing of the key elements involved in the energy supply system and their management are critical. Pumps and valves are essential components of a DHS as they ensure hydraulic operating conditions are met for the energy distribution process. To achieve this, a hydraulic system is typically controlled by defining a differential pressure set‐point at a critical location in the network. However, a good understanding of the dynamic behaviour of the hydraulic system during the diverse operating conditions is required for its efficient control and to maximise its performance. This paper presents a control strategy based on suitable dynamic models of the hydraulic system. These non‐linear models enable the simulation of the behaviour of mass flow rate, pressure drops in pipes, power consumption of the pump and the heat delivery to meet the thermal loads. Control system design is carried out in MATLAB, and the designed controller is verified with Apros—a commercial process simulation software. It is shown that the hydraulic behaviour of a DHS is well described by the dynamic models presented. In addition, the designed control scheme reduces the electricity consumption of pumps compared with a conventional mass flow rate controller based on a look‐up table and a differential pressure valve. |
| first_indexed | 2024-04-11T08:05:00Z |
| format | Article |
| id | doaj.art-9bfc294863ab40f792027e14437d8a2f |
| institution | Directory Open Access Journal |
| issn | 2516-8401 |
| language | English |
| last_indexed | 2024-04-11T08:05:00Z |
| publishDate | 2021-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Energy Systems Integration |
| spelling | doaj.art-9bfc294863ab40f792027e14437d8a2f2022-12-22T04:35:35ZengWileyIET Energy Systems Integration2516-84012021-03-0131132510.1049/esi2.12001Modelling and control of district heating networks with reduced pump utilisationHector Bastida0Carlos E. Ugalde‐Loo1Muditha Abyesekera2Meysam Qadrdan3School of Engineering Cardiff University Cardiff Wales UKSchool of Engineering Cardiff University Cardiff Wales UKSchool of Engineering Cardiff University Cardiff Wales UKSchool of Engineering Cardiff University Cardiff Wales UKAbstract District heating systems (DHS) provide thermal energy to a range of consumers. Hence, an adequate sizing of the key elements involved in the energy supply system and their management are critical. Pumps and valves are essential components of a DHS as they ensure hydraulic operating conditions are met for the energy distribution process. To achieve this, a hydraulic system is typically controlled by defining a differential pressure set‐point at a critical location in the network. However, a good understanding of the dynamic behaviour of the hydraulic system during the diverse operating conditions is required for its efficient control and to maximise its performance. This paper presents a control strategy based on suitable dynamic models of the hydraulic system. These non‐linear models enable the simulation of the behaviour of mass flow rate, pressure drops in pipes, power consumption of the pump and the heat delivery to meet the thermal loads. Control system design is carried out in MATLAB, and the designed controller is verified with Apros—a commercial process simulation software. It is shown that the hydraulic behaviour of a DHS is well described by the dynamic models presented. In addition, the designed control scheme reduces the electricity consumption of pumps compared with a conventional mass flow rate controller based on a look‐up table and a differential pressure valve.https://doi.org/10.1049/esi2.12001 |
| spellingShingle | Hector Bastida Carlos E. Ugalde‐Loo Muditha Abyesekera Meysam Qadrdan Modelling and control of district heating networks with reduced pump utilisation IET Energy Systems Integration |
| title | Modelling and control of district heating networks with reduced pump utilisation |
| title_full | Modelling and control of district heating networks with reduced pump utilisation |
| title_fullStr | Modelling and control of district heating networks with reduced pump utilisation |
| title_full_unstemmed | Modelling and control of district heating networks with reduced pump utilisation |
| title_short | Modelling and control of district heating networks with reduced pump utilisation |
| title_sort | modelling and control of district heating networks with reduced pump utilisation |
| url | https://doi.org/10.1049/esi2.12001 |
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