Comparison of Thermocline Molten Salt Storage Performances to Commercial Two-tank Configuration

Angelini, G.; Lucchini, Andrea; Manzolini, Giampaolo

doi:10.1016/j.egypro.2014.03.075

Cited by 82 publications

(27 citation statements)

References 8 publications

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“…In this technology, the Heat Transfer Fluid is used also as storage medium. However, it is possible to reduce the overall cost by using only one tank [5]. In this unique tank, hot and cold fluid are stored in the same tank, split by a thermal gradient called the thermocline.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of a packed-bed thermal energy storage system designed to recover high temperature waste heat: an industrial scale up

Touzo

Olivès

Dejean³

et al. 2020

Journal of Energy Storage

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An industrial-scale air-ceramic horizontal packed-bed thermal energy storage (Eco-Stock®) has been designed and built by Eco-Tech Ceram and tested during an experimental campaign of 500h. The goal is to provide experimental data and analysis of a horizontal and containerized packed bed TES at high temperature, with performance indicators specific to waste heat recovery. A single charge-discharge at 525°C and 3 cycles at 500°C were carried out (300 kW Th for charge, 350 kW Th for discharge). The unit was able to store up to 1.9 MWh Th in a TES system (1.7 × 1.7 × 3.08 m 3 ) composed by 16-ton of bauxite ceramic media. The packed bed was able to valorize up to 90% of the heat source, which demonstrates the system ability to recover waste heat up to 525°C at industrial scale. No channeling effect and moderate radial thermal gradient were detected, even though the tank had a horizontal geometry. The plug and play TES presents a non-negligible part of its energy stored in the insulant, which can be recovered during discharge. To take into account such phenomenon, a one-dimension 3 temperature model is proposed. The model fitted well with experimental results, with a root mean standard deviation of the model below 20°C for the temperature profiles.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical analysis of a packed-bed thermal energy storage system designed to recover high temperature waste heat: an industrial scale up

Touzo

Olivès

Dejean³

et al. 2020

Journal of Energy Storage

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“…To reduce the cost of the tank material, the storage material can be stored in only one tank with an upper hot and a bottom cold part [13]. Those can be separated by a floating barrier that is lifted and lowered during discharging and charging (Figure 2 left).…”

Section: Direct One Tank Sodium Systemmentioning

confidence: 99%

Assessment of thermal energy storage options in a sodium-based CSP plant

Niedermeier

Flesch

Marocco

et al. 2016

Applied Thermal Engineering

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“…New applications of binary and ternary mixtures, with a lower melting point, have been discussed from a technical and economic perspective. The target of these applications is to compare the efficiency of single tank thermocline molten salts storages and commercial “two tank” configurations …”

Section: Energy Storage and Smart Grids: Case Studiesmentioning

confidence: 99%

“…The target of these applications is to compare the efficiency of single tank thermocline molten salts storages and commercial "two tank" configurations. 102 In such studies, thermocline storages systems with nitrates salts, used in the range of 300 to 400 C with quartzite fillers, have been considered economically advantaged due to the reduced costs of salts, materials, and equipment. 103 Nevertheless, some flexibility in the design is required for the adoption of a single tank approach, as the two tanks configurations represents the most suitable solution to keep the plant working close to the design point.…”

Section: The Molten Salts Thermoclinic Storagementioning

confidence: 99%

On the integration of the energy storage in smart grids: Technologies and applications

et al. 2019

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Smart grids are one of the major challenges of the energy sector for both the energy demand and energy supply in smart communities and cities. Grid connected energy storage systems are regarded as promising solutions for providing ancillary services to electricity networks and to play an important role in the development of smart grids. The aim of the present article is to analyze the role of storage systems in the development of smart grids. The article includes an analysis and a list of energy storage systems that are applied in smart grids. Various energy storage systems are examined raging from electrical, electrochemical, thermal, and mechanical systems. Two case studies are presented that show the role of energy storage in effective management of energy demand and supply.

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Comparison of Thermocline Molten Salt Storage Performances to Commercial Two-tank Configuration

Cited by 82 publications

References 8 publications

Experimental and numerical analysis of a packed-bed thermal energy storage system designed to recover high temperature waste heat: an industrial scale up

Experimental and numerical analysis of a packed-bed thermal energy storage system designed to recover high temperature waste heat: an industrial scale up

Assessment of thermal energy storage options in a sodium-based CSP plant

On the integration of the energy storage in smart grids: Technologies and applications

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