Towards Sustainable Heat Supply with Decentralized Multi-Energy Systems by Integration of Subsurface Seasonal Heat Storage

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 power-to-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.

Guided Transformation of Abandoned Hydrocarbon Fields into Heat Storage Solutions Using Enhanced MCDA-AHP Geostatical Based Method, Hungarian Case Study

“…Revitalizing abandoned hydrocarbon fields for sustainable energy utilization presents a promising pathway to address the intermittent nature of renewable resources and the global challenge of carbon emissions reduction [1,2]. This initiative aligns with the urgent call for innovative energy solutions underscored in pivotal studies and reports [3][4][5][6], aiming to bridge the seasonal supply-demand mismatch and enhance energy security [7,8]. It embodies the drive towards energy decentralization and independence, highlighting the critical need for adaptable and reliable energy systems in the face of fluctuating renewable outputs [9,10].…”

Remote Temperature Control Strategy of Multi-energy Heat Collection Based on the Internet of Things

“…The conclusion was that heat and gas storage equipment helped solve the impact of renewable energy uncertainties in the MES. van der Roest et al [23] developed a method to improve the integration and control of hightemperature aquifer thermal energy storage (HT-ATES) system in a decentralized multi-energy system. The study expanded the multi-energy system model and combined it with the numerical hydrothermal model in order to dynamically simulate the functions of multiple HT-ATES system design.…”

Using multiple partially-penetrating wells (MPPWs) to improve the performance of high-temperature ATES systems: Well operation, storage conditions and aquifer heterogeneity

“…In the last decade, interest in the suitability and applicability of HT-ATES has grown massively, resulting in many case studies which explore the potential of HT-ATES for site-specific conditions (e.g. Réveillère et al, 2013;Zeghici et al, 2015;Xiao et al, 2016;Opel et al, 2017;Winterleitner et al, 2018;Ueckert and Baumann, 2019;Collignon et al, 2020;Stricker et al, 2020;Van der Roest et al, 2021).…”