Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling
The integration of multi-energy systems to meet the energy demand of buildings represents one of the most promising solutions for improving the energy performance of the sector. The energy flexibility provided by the building is paramount to allowing optimal management of the different available res...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/2/519 |
| _version_ | 1797409562658078720 |
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| author | Alice Mugnini Gianluca Coccia Fabio Polonara Alessia Arteconi |
| author_facet | Alice Mugnini Gianluca Coccia Fabio Polonara Alessia Arteconi |
| author_sort | Alice Mugnini |
| collection | DOAJ |
| description | The integration of multi-energy systems to meet the energy demand of buildings represents one of the most promising solutions for improving the energy performance of the sector. The energy flexibility provided by the building is paramount to allowing optimal management of the different available resources. The objective of this work is to highlight the effectiveness of exploiting building energy flexibility provided by thermostatically controlled loads (TCLs) in order to manage multi-energy systems (MES) through model predictive control (MPC), such that energy flexibility can be regarded as an additional energy source in MESs. Considering the growing demand for space cooling, a case study in which the MPC is used to satisfy the cooling demand of a reference building is tested. The multi-energy sources include electricity from the power grid and photovoltaic modules (both of which are used to feed a variable-load heat pump), and a district cooling network. To evaluate the varying contributions of energy flexibility in resource management, different objective functions—namely, the minimization of the withdrawal of energy from the grid, of the total energy cost and of the total primary energy consumption—are tested in the MPC. The results highlight that using energy flexibility as an additional energy source makes it possible to achieve improvements in the energy performance of an MES building based on the objective function implemented, i.e., a reduction of 53% for the use of electricity taken from the grid, a 43% cost reduction, and a 17% primary energy reduction. This paper also reflects on the impact that the individual optimization of a building with a multi-energy system could have on other users sharing the same energy sources. |
| first_indexed | 2024-03-09T04:16:33Z |
| format | Article |
| id | doaj.art-c03c6e8008fb45c9adff4839f1fad4ae |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-09T04:16:33Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c03c6e8008fb45c9adff4839f1fad4ae2023-12-03T13:53:07ZengMDPI AGEnergies1996-10732021-01-0114251910.3390/en14020519Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District CoolingAlice Mugnini0Gianluca Coccia1Fabio Polonara2Alessia Arteconi3Dipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, ItalyDipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, ItalyDipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, ItalyDipartimento di Ingegneria Industriale e Scienze Matematiche, Università Politecnica delle Marche, Via Brecce Bianche 12, 60131 Ancona, ItalyThe integration of multi-energy systems to meet the energy demand of buildings represents one of the most promising solutions for improving the energy performance of the sector. The energy flexibility provided by the building is paramount to allowing optimal management of the different available resources. The objective of this work is to highlight the effectiveness of exploiting building energy flexibility provided by thermostatically controlled loads (TCLs) in order to manage multi-energy systems (MES) through model predictive control (MPC), such that energy flexibility can be regarded as an additional energy source in MESs. Considering the growing demand for space cooling, a case study in which the MPC is used to satisfy the cooling demand of a reference building is tested. The multi-energy sources include electricity from the power grid and photovoltaic modules (both of which are used to feed a variable-load heat pump), and a district cooling network. To evaluate the varying contributions of energy flexibility in resource management, different objective functions—namely, the minimization of the withdrawal of energy from the grid, of the total energy cost and of the total primary energy consumption—are tested in the MPC. The results highlight that using energy flexibility as an additional energy source makes it possible to achieve improvements in the energy performance of an MES building based on the objective function implemented, i.e., a reduction of 53% for the use of electricity taken from the grid, a 43% cost reduction, and a 17% primary energy reduction. This paper also reflects on the impact that the individual optimization of a building with a multi-energy system could have on other users sharing the same energy sources.https://www.mdpi.com/1996-1073/14/2/519energy flexibilitydistrict coolingmodel predictive controlmulti-energy systemrule-based control |
| spellingShingle | Alice Mugnini Gianluca Coccia Fabio Polonara Alessia Arteconi Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling Energies energy flexibility district cooling model predictive control multi-energy system rule-based control |
| title | Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling |
| title_full | Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling |
| title_fullStr | Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling |
| title_full_unstemmed | Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling |
| title_short | Energy Flexibility as Additional Energy Source in Multi-Energy Systems with District Cooling |
| title_sort | energy flexibility as additional energy source in multi energy systems with district cooling |
| topic | energy flexibility district cooling model predictive control multi-energy system rule-based control |
| url | https://www.mdpi.com/1996-1073/14/2/519 |
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