Abstract
In the energy transition, multi-energy systems are crucial to reduce the temporal, spatial and functional mismatch between sustainable energy supply and demand. Technologies as powerto-heat (PtH) allow flexible and effective utilisation of available surplus green electricity when integrated with seasonal heat storage options. However, insights and methods for integration of PtH and seasonal heat storage in multi-energy systems are lacking. Therefore, in this study, we developed methods for improved integration and control of a high temperature aquifer thermal energy storage (HT-ATES) system within a decentralized multi-energy system. To this end, we expanded and integrated a multi-energy system model with a numerical hydro-thermal model to dynamically simulate the functioning of several HT-ATES system designs for a case study of a neighbourhood of 2000 houses. Results show that the integration of HT-ATES with PtH allows 100% provision of the yearly heat demand, with a maximum 25% smaller heat pump than without HT-ATES. Success of the system is partly caused by the developed mode of operation whereby the heat pump lowers the threshold temperature of the HT-ATES, as this increases HT-ATES performance and decreases the overall costs of heat production. Overall, this study shows that the integration of HT-ATES in a multi-energy system is suitable to match annual heat demand and supply, and to increase local sustainable energy use.
| Original language | English |
|---|---|
| Article number | 7958 |
| Pages (from-to) | 1-31 |
| Journal | Energies |
| Volume | 14 |
| Issue number | 23 |
| DOIs | |
| Publication status | Published - 1 Dec 2021 |
Bibliographical note
Funding Information:This research was co-financed with PPS-funding from the Topconsortia for Knowledge and Innovation (TKI’s) of the Ministry of Economic Affairs and Climate. The authors would like to thank the TKI Watertechnology (2016KWR019 or RVO5289) and TKI Urban Energy (TEUE117059) in The Netherlands for their financial contribution to the research projects that lay at the foundation of this publication.
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
Funding
This research was co-financed with PPS-funding from the Topconsortia for Knowledge and Innovation (TKI’s) of the Ministry of Economic Affairs and Climate. The authors would like to thank the TKI Watertechnology (2016KWR019 or RVO5289) and TKI Urban Energy (TEUE117059) in The Netherlands for their financial contribution to the research projects that lay at the foundation of this publication.
Keywords
- Heat storage
- High temperature aquifer thermal energy storage (HT-ATES)
- Multi-energy system
- Sustainable heating
