Demonstration of EnergyNest thermal energy storage (TES) technology

Høivik, Nils; Greiner, Christopher J.; Tirado, Eva Bellido; Barragan, Juan; Bergan, Pål G.; Skeie, Geir; Blanco, Pablo M.; Calvet, Nicolas

doi:10.1063/1.4984432

Cited by 30 publications

(13 citation statements)

References 3 publications

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“…The internal material stress due to thermal expansion and contraction in the structure places a constraint on the selection of materials, with firebrick and concrete being the major materials investigated recently due to their thermal expansion coefficient being nearly identical to steel, allowing the entire system to expand or contract without adding internal stress or losing heat transfer capability. A near-deployment stage technology is the concrete thermal battery [8], where the heat transfer fluid flows through a build-in U-tube steel pipe to deposit and withdraw heat into and from a single thermal battery. Such solid thermal batteries can be interconnected and stacked as a large-scale storage module, with a storage life exceeding 30 years.…”

Section: Overview Of Thermal Energy Storage Technologiesmentioning

confidence: 99%

Development of Energy Storage: Cost models

Ponciroli

Wang

Vilim

et al. 2021

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Section: Overview Of Thermal Energy Storage Technologiesmentioning

confidence: 99%

Development of Energy Storage: Cost models

Ponciroli

Wang

Vilim

et al. 2021

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“…Concrete thermal energy storage (CTES) is a technology under development domestically and internationally with the goal of using common and relatively low-cost materials in new ways to store heat. Concrete and steel are widely used materials with well-understood fabrication methods even in unconventional shapes and sizes [8]. Concrete formulas are proprietary and designed with the specific needs of cyclic operation in mind.…”

Section: Concrete Thermal Energy Storagementioning

confidence: 99%

“…In summary, the concrete TES is a simplified fluid pipe model that can import any fully developed Modelica fluid package and transfers heat in and out of a solid media whose properties are based on HEATCRETE® data [8]. The model uses a Nusselt correlation to condense the HTF, and the Kandlikar correlation to boil.…”

Section: Single-pipe Modelmentioning

confidence: 99%

Thermal Energy Storage Model Development within the Integrated Energy Systems Hybrid Repository

Mikkelson

Frick

Rabiti

et al. 2021

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This publication details newly created energy storage models developed within the HYBRID Modelica repository as part of the Department of Energy Office of Nuclear Energy (DOE-NE) Integrated Energy Systems (IES) program, led by Idaho National Laboratory (INL).Model development to-date includes creation of dynamic systems-level models of concrete, latent heat, and packed-bed thermocline energy storage technologies for deployment in the IES-based HYBRID repository. Models are developed using the latest publicly available data and incorporate the possibility of control strategy inclusion for use with the existing IES modeling, analysis, and optimization toolset. Simulations showcase the abilities of each technology to cyclically charge and discharge when exposed to time-varying boundary conditions.

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“…A cross-section of one of these "batteries" is shown in Figure 18. EnergyNest indicates that the storage life of this system will exceed 30 years, and more likely 50 years [57]. Other concrete technologies similarly discuss steel piping frames encased in the concrete storage medium.…”

Section: Concretementioning

confidence: 99%

“…EnergyNest believes that their thermal battery system could cost as low as $25/kWh depending on how expensive it is to source the construction materials [57]. Thus far, the storage has been modeled successfully, with the only differences between predicted and actual results being tied to the heat transfer fluid source temperature rather than any systematic modeling error [56].…”

Section: Concretementioning

confidence: 99%

Initial Performance Evaluation and Ranking of Thermal Energy Storage Options for Light Water Reactor Integration to Support Modeling and Simulation

Mikkelson

Frick

Bragg‐Sitton

et al. 2019

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This report provides an in-depth analysis of current thermal storage technologies in the marketplace as of 2019 and develops a phenomenological identification ranking table (PIRT) and Figure of Merit (FOM) study for near-term thermal energy storage technologies with light water reactor technology. Particular focus was given the NuScale reactor as part of the Joint Use Modular Plant (JUMP) program between INL, NuScale, and the Utah Associated Municipal Project (UAMPs).It is fair to notice that the changes in the scope of the Integrated Energy System program led this report to focus more on thermal energy storage than on hydrogen as a form of local energy storage. This is due to LWRS (Light Water Reactor Sustainability) program picking up this area of research with an industrial partner as a part of a CRADA.Moreover, instead of trying to develop few initial models of some storage technologies, it has been chosen to analyze a broader range of thermal storage technologies and models available in literature. This takes also in consideration that any new model development in modelica would become soon obsolete, giving the decision to reshape the hybrid ecosystem of modelica models, which is part of FY2020 effort.Ancillary service industries and technologies are explored in detail to ascertain thermodynamic requirements for integration with thermal energy storage technologies. These industries include steel manufacturing, hydrogen production, desalination, pulp and paper manufacturing. It was determined that a large percentage of these industries can make use of existing nuclear output temperatures and pressures. Storage technologies that can maintain these values are advantageous for coupling purposes.The report then analyzes ten thermal energy storage technologies, with thirteen specific systems discussed in detail regarding their potential to integrate with LWR technology. A ranking tool identified important characteristics of thermal storage and ranked each of the technologies. Concrete, molten salt, and thermal oil sensible heat storages, and steam accumulators evaluated highly. After including cost estimations and qualitatively comparing these technologies, it is recommended that either molten salt or thermal oil is used for implementation with the JUMP module. The TES project cost will likely cost between $14,000,000 and $50,000,000. The potential flexibility of a two-tank sensible heat storage system should be able to demonstrate various new uses for nuclear heat. From power peaking via steam or liquid air heat topping to process heat applications, a two-tank system should be able to best provide a constant power transfer capability to the auxiliary energy consumer.Through commencement of this work, a more refined thermal storage selection process for Nuscale and existing nuclear power plants can be conducted. The ranking system developed here can be used to reevaluate the energy storage options periodically depending on the projected installation dates. Current results suggest two-tank thermal energy storage i...

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Demonstration of EnergyNest thermal energy storage (TES) technology

Cited by 30 publications

References 3 publications

Development of Energy Storage: Cost models

Development of Energy Storage: Cost models

Thermal Energy Storage Model Development within the Integrated Energy Systems Hybrid Repository

Initial Performance Evaluation and Ranking of Thermal Energy Storage Options for Light Water Reactor Integration to Support Modeling and Simulation

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