scholarly journals Addressing energy storage needs at lower cost via on-site thermal energy storage in buildings

2021 ◽  
Vol 14 (10) ◽  
pp. 5315-5329
Author(s):  
Adewale Odukomaiya ◽  
Jason Woods ◽  
Nelson James ◽  
Sumanjeet Kaur ◽  
Kyle R. Gluesenkamp ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Lower Cost ◽  
Residential Buildings ◽  
The U.S

Energy storage needs to support commercial and residential buildings in the U.S. in 2050 for various 100% renewable energy scenarios.

scholarly journals Self-Sufficiency and Energy Savings of Renewable Thermal Energy Systems for an Energy-Sharing Community

Energies ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4284
Author(s):  
Min-Hwi Kim ◽  
Youngsub An ◽  
Hong-Jin Joo ◽  
Dong-Won Lee ◽  
Jae-Ho Yun
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Energy Systems ◽  
Hot Water ◽  
Pump System ◽  
Ground Source Heat Pumps ◽  
Self Sufficiency ◽  
Energy Sharing

Due to increased grid problems caused by renewable energy systems being used to realize zero energy buildings and communities, the importance of energy sharing and self-sufficiency of renewable energy also increased. In this study, the energy performance of an energy-sharing community was investigated to improve its energy efficiency and renewable energy self-sufficiency. For a case study, a smart village was selected via detailed simulation. In this study, the thermal energy for cooling, heating, and domestic hot water was produced by ground source heat pumps, which were integrated with thermal energy storage (TES) with solar energy systems. We observed that the ST system integrated with TES showed higher self-sufficiency with grid interaction than the PV and PVT systems. This was due to the heat pump system being connected to thermal energy storage, which was operated as an energy storage system. Consequently, we also found that the ST system had a lower operating energy, CO2 emissions, and operating costs compared with the PV and PVT systems.

scholarly journals The Capacity Optimization of Wind-Photovoltaic-Thermal Energy Storage Hybrid Power System

2019 ◽  
Vol 118 ◽  
pp. 02054
Author(s):  
Jingli Li ◽  
Wannian Qi ◽  
Jun Yang ◽  
Yi He ◽  
Jingru Luo ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Storage ◽  
Power System ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Electric Heater ◽  
Transmission Channel ◽  
Capacity Optimization ◽  
Hybrid Power System ◽  
Hybrid Power

This paper proposes a Wind-Photovoltaic-Thermal Energy Storage hybrid power system with an electric heater. The proposed system consists of wind subsystem, photovoltaic subsystem, electric heater, thermal energy storage and steam turbine unit. The electric heater is used to convert the redundant electricity from wind or photovoltaic subsystem into heat, which is stored in thermal energy storage. When the system output is less than the load demand, thermal energy storage system releases heat to generate electricity. In this paper, the optimal objective is to minimize the levelized cost of energy and maximize the utilization rates of renewable energy and transmission channel. The fitness function is compiled according to the scheduling strategy, and the capacity optimization problem is solved by particle swarm optimization algorithm in MATLAB. The case analysis show that the proposed system can effectively increase the utilization rate of renewable energy and transmission channel.

scholarly journals Evaluation of the State of Charge of a Solid/Liquid Phase Change Material in a Thermal Energy Storage Tank

Energies ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1425 ◽  
Author(s):  
Gabriel Zsembinszki ◽  
Christian Orozco ◽  
Jaume Gasia ◽  
Tilman Barz ◽  
Johann Emhofer ◽  
...  
Keyword(s):  
Energy Storage ◽  
Phase Change ◽  
Phase Change Material ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Residential Buildings ◽  
The State ◽  
State Of Charge ◽  
Accurate Estimation ◽  
Change Material

Monitoring of the state of charge of the thermal energy storage component in solar thermal systems for space heating and/or cooling in residential buildings is a key element from the overall system control strategy point of view. According to the literature, there is not a unique method for determining the state of charge of a thermal energy storage system that could generally be applied in any system. This contribution firstly provides a classification of the state-of-the-art of available techniques for the determination of the state of charge, and secondly, it presents an experimental analysis of different methods based on established sensor technologies, namely temperature, mass flow rates, and pressure measurements, tested using a lab-scale heat exchanger filled with a commercial phase change material for cooling applications. The results indicate that, depending on the expected accuracy and available instrumentation, each of the methods studied here can be used in the present application, the deviations between the methods generally being below 20%. This study concludes that a proper combination of two or more of these methods would be the ideal strategy to obtain a more reliable and accurate estimation of the state of charge of the latent heat thermal energy storage.

scholarly journals The potential of thermal energy storage as an energy retrofit measure for high-rise residential buildings in Canada

2021 ◽  
Author(s):  
Shahrzad Soudian
Keyword(s):  
Energy Consumption ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Phase Change Materials ◽  
Simulation Analysis ◽  
Residential Buildings ◽  
Small Scale ◽  
Energy Retrofit ◽  
High Rise

High-rise apartments are a prominent type of residential buildings in Canadian cities. However, poor aging performance of existing apartments has led to high discomfort and energy consumption that must be addressed. Thermal energy storage is a potential energy retrofit measure that affects energy consumption by regulating radiant temperatures. The aim of this study is to evaluate the effectiveness of latent thermal energy storage using phase change materials (PCMs) integrated into walls and ceilings of apartment units. A composite PCM system comprised of two different PCM products with melting points of 21.7 oC and 25 oC is proposed and evaluated to provide a year-around thermal energy storage. A simulation analysis using Energy Plus is performed to investigate the impacts of the composite PCM system on indoor temperatures and energy use. An experimental study is conducted using two small scale test cells to monitor the performance of the PCM system in detail.

Overview of Seasonal Thermal Energy Storage (STES) Technology

1983 ◽  
Vol 2 (2) ◽  
pp. 113-122
Author(s):  
Charles F. Meyer
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Operating Experience ◽  
Field Trials ◽  
Department Of Energy ◽  
Commercial Development ◽  
Potential Benefits ◽  
The U.S

This paper presents an overview of what seasonal thermal energy storage (STES) is, how it can best be used, and its potential benefits and problems. ATES, the storage of thermal energy in underground aquifers in freshwater, considered to be the most viable form of the technology, is only economic on a large scale, but commercial operating experience demonstrates its technical feasibility, e.g. in China. The U.S. Department of Energy has spent several million dollars supporting research into ATES over the last decade, although field trials are currently curtailed. Despite lack of funding and unwillingness on the part of the private sector to take risks in commercial development, ATES can be shown to be a valuable source of energy, and money, saving, and could be effectively exploited to advantage.

Systems of Sensible Thermal Energy Storage

2016 ◽  
Vol 820 ◽  
pp. 206-211
Author(s):  
Martina Jurigova ◽  
Ivan Chmúrny
Keyword(s):  
Renewable Energy ◽  
Energy Consumption ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Storage Systems ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
Effective Use

This paper is focused on new seasonal energy storage technology. World demands for energy are increasing at present, but the resources of fuel are limited. There is a prediction, that they will become rare and more expensive in subsequent years. The technology, which can contribute to increasing the efficiency of energy consumption, is thermal energy storage. The role of such energy storage systems is to accumulate heat, balancing temperature differences and achievement the most effective use of the collected energy. Thermal energy storage plays an important role in increasing the using of renewable energy.

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