scholarly journals GLOBAL WARMING IS LARGE-SCALE THERMAL ENERGY STORAGE

2007 ◽  
pp. 75-86 ◽  
Author(s):  
Bo Nordell
Keyword(s):  
Global Warming ◽  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale

Effect of Design Parameters on the Performance of Thermal Energy Storage Systems

Solar Energy ◽  
2004 ◽  
Author(s):  
Gregor P. Henze
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Control Strategies ◽  
Storage System ◽  
Operating Cost ◽  
Energy Storage System ◽  
Design Parameters ◽  
Wide Range

This paper describes simulation-based results of a large-scale investigation of a commercial cooling plant including a thermal energy storage system. A cooling plant with an ice-on-coil system with external melt and a reciprocating compressor operating in a large office building was analyzed under four different control strategies. Optimal control as the strategy that minimizes the total operating cost (demand and energy charges) served as a benchmark to assess the performance of the three conventional controls. However, all control strategies depend on properly selected design parameters. The storage and chiller capacities as the primary design parameters were varied over a wide range and the dependence of the system’s cost saving performance on these parameters was evaluated.

scholarly journals Empirical Validation and Numerical Predictions of an Industrial Borehole Thermal Energy Storage System

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2263
Author(s):  
Emil Nilsson ◽  
Patrik Rohdin
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Storage System ◽  
Flow Characteristics ◽  
Heat Extraction ◽  
Short Term ◽  
Numerical Predictions ◽  
Heat Injection

To generate performance predictions of borehole thermal energy storage (BTES) systems for both seasonal and short-term storage of industrial excess heat, e.g., from high to low production hours, models are needed that can handle the short-term effects. In this study, the first and largest industrial BTES in Sweden, applying intermittent heat injection and extraction down to half-day intervals, was modelled in the IDA ICE 4.8 environment and compared to three years of measured storage performance. The model was then used in a parametric study to investigate the change in performance of the storage from e.g., borehole spacing and storage supply flow characteristics at heat injection. For the three-year comparison, predicted and measured values for total injected and extracted energy differed by less than 1% and 3%, respectively and the mean relative difference for the storage temperatures was 4%, showing that the performance of large-scale BTES with intermittent heat injection and extraction can be predicted with high accuracy. At the actual temperature of the supply flow during heat injection, 40 °C, heat extraction would not exceed approximately 100 MWh/year for any investigated borehole spacing, 1–8 m. However, when the temperature of the supply flow was increased to 60–80 °C, 1400–3100 MWh/year, also dependent on the flow rate, could be extracted at the spacing yielding the highest heat extraction, which in all cases was 3–4 m.

scholarly journals Thermal energy storage

2020 ◽  
Vol 2 (2) ◽  
pp. 66-88 ◽  
Author(s):  
Fehim Findik ◽  
Kemal Ermiş
Keyword(s):  
Energy Storage ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
Energy Use ◽  
Supply And Demand ◽  
Environmentally Benign ◽  
Energy Technology ◽  
Effective Use ◽  
Thermal Energy Storage Systems

Thermal energy storage (TES) is an advanced energy technology that is attracting increasing interest for thermal applications such as space and water heating, cooling, and air conditioning. TES systems have enormous potential to facilitate more effective use of thermal equipment and large-scale energy substitutions that are economic. TES appears to be the most appropriate method for correcting the mismatch that sometimes occurs between the supply and demand of energy. It is therefore a very attractive technology for meeting society’s needs and desires for more efficient and environmentally benign energy use. In this study, thermal energy storage systems, energy storage and methods, hydrogen for energy storage and technologies are reviewed.

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.

Aquifer Thermal Energy Storage in Finland

1988 ◽  
Vol 20 (3) ◽  
pp. 75-86 ◽  
Author(s):  
H. Iihola ◽  
T. Ala-Peijari ◽  
H. Seppänen
Keyword(s):  
Energy Storage ◽  
Water Treatment ◽  
Thermal Energy ◽  
Thermal Energy Storage ◽  
Large Scale ◽  
International Energy Agency ◽  
Energy Agency ◽  
Aquifer Thermal Energy Storage ◽  
Rapid Changes ◽  
New Ideas

The rapid changes and crises in the field of energy during the 1970s and 1980s have forced us to examine the use of energy more critically and to look for new ideas. Seasonal aquifer thermal energy storage (T < 100°C) on a large scale is one of the grey areas which have not yet been extensively explored. However, projects are currently underway in a dozen countries. In Finland there have been three demonstration projects from 1974 to 1987. International co-operation under the auspices of the International Energy Agency, Annex VI, ‘Environmental and Chemical Aspects of Thermal Energy Storage in Aquifers and Research and Development of Water Treatment Methods' started in 1987. The research being undertaken in 8 countries includes several elements fundamental to hydrochemistry and biochemistry.

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