scholarly journals Low carbon heating and cooling by combining various technologies with Aquifer Thermal Energy Storage

2019 ◽  
Vol 665 ◽  
pp. 1-10 ◽  
Author(s):  
M. Pellegrini ◽  
M. Bloemendal ◽  
N. Hoekstra ◽  
G. Spaak ◽  
A. Andreu Gallego ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Low Carbon ◽  
Heating And Cooling ◽  
Aquifer Thermal Energy Storage

scholarly journals Design Aspects for Large-scale Pit and Aquifer Thermal Energy Storage for District Heating and Cooling

2018 ◽  
Vol 149 ◽  
pp. 585-594 ◽  
Author(s):  
Thomas Schmidt ◽  
Thomas Pauschinger ◽  
Per Alex Sørensen ◽  
Aart Snijders ◽  
Reda Djebbar ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
District Heating ◽  
Heating And Cooling ◽  
Aquifer Thermal Energy Storage

scholarly journals Aquifer Thermal Energy Storage (ATES) for District Heating and Cooling: A Novel Modeling Approach Applied in a Case Study of a Finnish Urban District

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2478 ◽  
Author(s):  
Oleg Todorov ◽  
Kari Alanne ◽  
Markku Virtanen ◽  
Risto Kosonen
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Production ◽  
Production Cost ◽  
District Heating ◽  
Urban District ◽  
Heating And Cooling ◽  
Aquifer Thermal Energy Storage ◽  
Cooling Loads

Aquifer thermal energy storage (ATES) combined with ground-source heat pumps (GSHP) offer an attractive technology to match supply and demand by efficiently recycling heating and cooling loads. This study analyses the integration of the ATES–GSHP system in both district heating and cooling networks of an urban district in southwestern Finland, in terms of technoeconomic feasibility, efficiency, and impact on the aquifer area. A novel mathematical modeling for GSHP operation and energy system management is proposed and demonstrated, using hourly data for heating and cooling demand. Hydrogeological and geographic data from different Finnish data sources is retrieved in order to calibrate and validate a groundwater model. Two different scenarios for ATES operation are investigated, limited by the maximum pumping flow rate of the groundwater area. The additional precooling exchanger in the second scenario resulted in an important advantage, since it increased the heating and cooling demand covered by ATES by 13% and 15%, respectively, and decreased the energy production cost by 5.2%. It is concluded that dispatching heating and cooling loads in a single operation, with annually balanced ATES management in terms of energy and pumping flows resulted in a low long-term environmental impact and is economically feasible (energy production cost below 30 €/MWh).

Performance Assessment of an Aquifer Thermal Energy Storage System for Heating and Cooling Applications

2015 ◽  
Vol 138 (1) ◽  
Author(s):  
Abdullah A. AlZahrani ◽  
Ibrahim Dincer
Keyword(s):  
Energy Efficiency ◽  
Energy Storage ◽  
Performance Assessment ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Cooling System ◽  
Temperature Sensitive ◽  
Heating And Cooling ◽  
Aquifer Thermal Energy Storage ◽  
Energy And Exergy

This study presents energy and exergy analyses of aquifer thermal energy storage (ATES) integrated with a building heating and cooling system. In this regard, a typical bidirectional ATES integrated with a heat pump (HP) is considered in the provision of required heating and cooling demands. The different ATES components and the operating principle are described. Furthermore, energy and exergy models are formulated for three subprocesses: charging, storing, and discharging, to track changes in energy and exergy quantities with discharging time. The energetic and exergetic efficiencies are then evaluated for both operating cases. The limitation of the use of energy efficiency for ATES performance assessment is elaborated. In contrast, the importance of exergy analysis as a practical and temperature sensitive tool is considered as a quantitative and a qualitative measure of the ATES performance. Additionally, a comparison between energetic and exergetic efficiencies is presented where energy efficiency involves some ambiguities, especially when energy recovered from ATES is at a low temperature rather than at an ambient temperature.

Aquifer Thermal Energy Storage (ATES) systems - current global practical experiences

2020 ◽  
Author(s):  
Simon Schüppler ◽  
Paul Fleuchaus ◽  
Bas Godschalk ◽  
Guido Bakema ◽  
Roman Zorn ◽  
...  
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Storage Period ◽  
Energy System ◽  
Technical Performance ◽  
Heating And Cooling ◽  
Aquifer Thermal Energy Storage ◽  
Economic Barriers ◽  
Practical Experiences

<p>As most of the industrial nations are located in the moderate climate zone with distinct summer and winter, global heating and cooling supply is less a matter of energy shortage than an issue of seasonal storage. Aquifer Thermal Energy Storage (ATES ) is capable of storing large energy volumes to bridge the seasonal mismatch between demand and supply of heating and cooling systems. However, there is a discrepancy in global ATES development, since more than 80 % of all ATES system are currently operating in the Netherlands and Scandinavia, which is mainly attributed to techno-economic barriers. Thus, this work analyses the technical performance of ATES based on monitoring data from 73 low temperature Dutch ATES systems. The analysis reveals total abstraction of 30 GWh of heat and 32 GWh of cold per year with average abstraction temperatures of 10 °C and 15 °C in summer and winter, respectively. However, while the temperature difference between abstraction and injection is 3-4 K smaller compared to the optimal design, the stored and abstracted amount of thermal energy is 50 % lower than the licensed capacities. This suggests inadequate interaction between the energy system and the aquifer as a result of the insufficient charging process of the subsurface. Nevertheless, the data showed only small thermal imbalances and small temperature losses during the storage period. Based on the comprehensive analysis, valuable conclusions can be drawn on the optimizations needs of current and future ATES projects.</p><p> </p>

Environmental impacts of aquifer thermal energy storage investigated by field and laboratory experiments

2013 ◽  
Vol 4 (2) ◽  
pp. 77-89 ◽  
Author(s):  
Matthijs Bonte ◽  
Boris M. Van Breukelen ◽  
Pieter J. Stuyfzand
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Temperature Effects ◽  
Laboratory Experiments ◽  
Potential Temperature ◽  
Arsenic Concentration ◽  
Observation Data ◽  
Aquifer Thermal Energy Storage ◽  
Field Investigations

Aquifer thermal energy storage (ATES) uses groundwater to store energy for heating or cooling purposes in the built environment. This paper presents field and laboratory results aiming to elucidate the effects that ATES operation may have on chemical groundwater quality. Field data from an ATES site in the south of the Netherlands show that ATES results in chemical quality perturbations due to homogenisation of the initially present vertical water quality gradient. We tested this hypothesis by numerical modelling of groundwater flow and coupled SO4 transport during extraction and injection of groundwater by the ATES system. The modelling results confirm that extracting groundwater from an aquifer with a natural quality stratification, mixing this water in the ATES system, and subsequent injection in the second ATES well can adequately describe the observation data. This mixing effect masks any potential temperature effects in typical low temperature ATES systems (<25 °C) which was the reason to complement the field investigations with laboratory experiments focusing on temperature effects. The laboratory experiments indicated that temperature effects until 25 °C are limited; most interestingly was an increase in arsenic concentration. At 60 °C, carbonate precipitation, mobilisation of dissolved oxygen concentration, K and Li, and desorption of trace metals like As can occur.

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