Long-term performance of heat exchanger piles | Acta …
The analyses simulated 30 years of pile operation and resulted in significant findings for long-term performance of heat exchanger piles under different climatic conditions. …
Energy storage charging piles for long-term use in hot weather
The analyses simulated 30 years of pile operation and resulted in significant findings for long-term performance of heat exchanger piles under different climatic conditions. …
Can energy storage reduce the discharge load of charging piles during peak hours?
Combining Figs. 10 and 11, it can be observed that, based on the cooperative effect of energy storage, in order to further reduce the discharge load of charging piles during peak hours, the optimized scheduling scheme transfers most of the controllable discharge load to the early morning period, thereby further reducing users' charging costs.
How do energy storage charging piles work?
To optimize grid operations, concerning energy storage charging piles connected to the grid, the charging load of energy storage is shifted to nighttime to fill in the valley of the grid's baseline load. During peak electricity consumption periods, priority is given to using stored energy for electric vehicle charging.
What is an energy pile?
The energy pile represents an embedment of heat exchange pipes into the pile body. In this way, it can serve as a vertical heat exchanger in addition to its primary function of supporting the building. The additional land use and construction costs related to the conventional vertical boreholes of the GSHP system can thus be saved.
Does pile length underestimate the rate of heat exchange?
As shown in Fig. 5 (a), for the case in unfavourable ground conditions, the computed results corresponding to the actual pile length of 30 m underestimated the daily-averaged rate of heat exchange by about 25% for both the modes of heat extraction and injection. To improve the situation, an equivalent pile length was calibrated.
What is the temperature range of the energy pile?
In this study, temperature changes of the energy pile were constrained to be within a range of 5–40 °C. This range serves as an input into the thermo-mechanical analysis of the energy pile foundation, resulting in a one-way coupling between the thermal analysis of the whole system and the thermo-mechanical analysis of the energy pile foundation.
How long does it take to charge a charging pile?
In the charging and discharging process of the charging piles in the community, due to the inability to precisely control the charging time periods for users and charging piles, this paper divides a day into 48 time slots, with the control system utilizing a minimum charging and discharging control time of 30 min.
Underground solar energy storage via energy piles: An …
Energy piles, which embed thermal loops into the pile body, have been used as heat exchangers in ground source heat pump systems to replace traditional boreholes. …
Planning approach for integrating charging stations and …
A total of 120 charging piles were installed at a cost of 395,830.58 USD. The total production capacity of the PV panels was 908.75 kW at a cost of 64,678.82 USD. Energy storage systems were planned to have a total capacity of 7955.06 kWh at a cost of 865,935.69 USD. The overall investment was 9,999,999.99 USD, which did not exceed the total ...
Performance of energy piles foundation in hot-dominated climate: …
Energy piles represent an innovative technology that can help provide sustainable geothermal heating or cooling energy for thermal conditioning purposes. In hot-dominated …
Performance of energy piles foundation in hot-dominated …
Energy piles represent an innovative technology that can help provide sustainable geothermal heating or cooling energy for thermal conditioning purposes. In hot-dominated climates, the interest is to inject heat in the ground and extract energy for space-cooling purposes.
Long-Term Thermal Performance Evaluation of a Novel Energy Pile …
In cold climates, space heating and domestic hot water production account for a large portion of the building''s energy demand and the related CO 2 emissions. To sustainably …
Underground solar energy storage via energy piles
In recent years, energy piles have been attracting attention from the academic field and getting more installations in engineering practice [7], [8], [9].The energy piles combine the foundation piles with the heat exchange pipes, the latter being attached to the steel cage and embedded in the pile body, as illustrated in Fig. 1 this way, the energy piles sustain the …
Charging up Stationary Energy Storage
To sustain and accelerate this growth of intermittent energy production, electricity systems will require increased flexibility, including the potential to store power over long durations of time. Economical long-term energy storage for stationary applications is a pivotal missing element toward enabling a predominantly renewable energy powered ...
Energy optimization dispatch based on two‐stage and …
1 INTRODUCTION. Cooperative efforts to build a new type of power system, promote the use of renewable energy, accelerate the transformation of the energy structure, achieve an efficient and clean supply of …
Frontiers | A Novel Thermochemical Long Term …
Basic idea of the concept is to use excess electricity, for example from roof top photovoltaic systems, during the summer time to drive the endothermal charging reaction. The charged material can then be stored in simple containers at …
Performance of energy piles foundation in hot-dominated …
The unbalanced thermal loading of energy piles in hot-dominated climates is an important aspect to consider for these applications. Having an unbalanced thermal load can lead to an increase in soil and pile temperatures over time which then leads to a decrease in the efficiency of the system in the long term [9].Olgun et al. [11] found that the extent of the …
Optimized operation strategy for energy storage charging piles …
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic …
Long-term performance of heat exchanger piles | Acta …
The analyses simulated 30 years of pile operation and resulted in significant findings for long-term performance of heat exchanger piles under different climatic conditions. Heat exchanger piles utilize the constant temperature and the thermal storage capacity of the ground for heating and cooling of buildings.
Long-term performance of heat exchanger piles
Energy demand and the estimated ground thermal loads were further used to model long-term heating and cooling of the ground around the heat exchanger piles. 2.2 Energy demand analysis Fig. 4 Layout of the office building used in the energy demand analyses During the cooling phase, the axial loads in the pile are reduced, and tensile stresses may be observed in the lower part …
Long-term performance and life cycle assessment of energy piles …
Long-term performance of energy piles in different climatic conditions were analysed. GSHP system was successful in providing majority of space heating–cooling …
Frontiers | A Novel Thermochemical Long Term Storage Concept: …
Basic idea of the concept is to use excess electricity, for example from roof top photovoltaic systems, during the summer time to drive the endothermal charging reaction. The charged material can then be stored in simple containers at ambient temperature and the chemical potential is preserved without energy losses for an unlimited period of time.
Long-Term Thermal Performance Evaluation of a Novel Energy Pile …
In cold climates, space heating and domestic hot water production account for a large portion of the building''s energy demand and the related CO 2 emissions. To sustainably climatize buildings, renewable energy technologies need to …
Optimized operation strategy for energy storage charging piles …
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic characteristics of electric vehicles, we have developed an ordered charging and discharging optimization scheduling strategy for energy storage Charging piles considering time-of-use el...
The Impact of Public Charging Piles on Purchase of Pure Electric …
3Center for Energy & Environmental Policy Research, Beijing Institute of Technology, Beijing, ... in terms of charging piles construction, in 2022, the number of charging infrastructures reached 5.2 million units, an increase of nearly 100% year-on-year. Among them, the public charging piles grows about 650 thousand, and the total number reaches 1.8 million …
Long-term performance and life cycle assessment of energy piles …
Long-term performance of energy piles in different climatic conditions were analysed. GSHP system was successful in providing majority of space heating–cooling demands. Auxiliary heating–cooling systems were required during peak demand periods. Life cycle assessment analyses were performed on conventional and energy piles.
Charging up Stationary Energy Storage
To sustain and accelerate this growth of intermittent energy production, electricity systems will require increased flexibility, including the potential to store power over long durations of time. Economical long-term …
Energy Storage Charging Pile Management Based on Internet of …
DOI: 10.3390/pr11051561 Corpus ID: 258811493; Energy Storage Charging Pile Management Based on Internet of Things Technology for Electric Vehicles @article{Li2023EnergySC, title={Energy Storage Charging Pile Management Based on Internet of Things Technology for Electric Vehicles}, author={Zhaiyan Li and Xuliang Wu and Shen Zhang …
Assessment of various energy storage methods for implementation in hot …
This study compares 13 different energy storage methods, namely; pumped hydro, compressed air, flywheels, hot water storage, molten salt, hydrogen, ammonia, lithium-ion battery, Zn-air battery, redox flow battery, fuel cells, supercapacitors, and superconducting magnetic storage to be implemented in hot arid regions in terms of water ...
Underground solar energy storage via energy piles: An …
Energy piles, which embed thermal loops into the pile body, have been used as heat exchangers in ground source heat pump systems to replace traditional boreholes. Therefore, it is proposed to store solar thermal energy underground via energy piles.
Energy pile-based ground source heat pump system with …
This study proposed a tailored solution to heating/cooling demands and domestic hot water preheating of high-rise residential buildings by integrating the energy pile-based GSHP system with seasonal solar energy storage. Characteristic features of the proposed system were presented in detail, and an optimal design procedure for it was developed ...
Long-term energy management for microgrid with hybrid …
Hybrid energy storage system (HESS) [7], [8] offers a promising way to guarantee both the short-term and long-term supply–demand balance of microgrids. HESS is composed of two or more ES units with different but complementing characteristics, such as duration and efficiency. Ultra-short-duration ES, such as supercapacitor, is an essential solution to voltage stability problems …
Optimized operation strategy for energy storage charging piles …
In response to the issues arising from the disordered charging and discharging behavior of electric vehicle energy storage Charging piles, as well as the dynamic characteristics of electric vehicles, we have developed an ordered charging and discharging optimization scheduling strategy for energy storage Charging piles considering time-of-use electricity …
Assessment of various energy storage methods for …
This study compares 13 different energy storage methods, namely; pumped hydro, compressed air, flywheels, hot water storage, molten salt, hydrogen, ammonia, lithium-ion battery, Zn-air battery, redox flow battery, fuel …
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