Electric thermal energy storage and advantage of rotating heater having synchronous inertia

Storage of electrical energy is a key technology for a future climate‐neutral energy supply with volatile photovoltaic and wind generation. Besides the well‐known technologies of pumped hydro, power‐to‐gas‐to‐power and batteries, the contribution of thermal energy storage is rather unknown. At the end of 2019 the worldwide power generation capacity from molten salt storage in concentrating solar power (CSP) plants was 21 GWhel. This article gives an overview of molten salt storage in CSP and new potential fields for decarbonization such as industrial processes, conventional power plants and electrical energy storage.

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“…-Solar receiver/absorbers for trough [54] and towers [55] -Electrical heater [56] -Combustion heater (melting units are commonly used)…”

Section: Integration Of Molten Salt Storage In Csp Plantsmentioning

confidence: 99%

Molten Salt Storage for Power Generation

Bauer

Odenthal

Bonk

2021

Chemie Ingenieur Technik

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“…To establish a low-carbon society, dependence on fossil fuel should be avoided. To reduce the use of fossil fuel, the new processes such as unused heat recovery, 1,2) promotion of renewable energy utilization, [3][4][5][6][7] and improvement in various process efficiencies have been required. In these processes, the key technology is heat exchanger.…”

Section: Introductionmentioning

confidence: 99%

Long-term Experiment of Hot Spring Heat Recovery Using Rotary Heat Exchanger by Controlling Precipitation

Maruoka

Yamamoto

Endo³

et al. 2022

ISIJ Int.

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To establish a low-carbon society, it is necessary to break away from dependence on fossil fuels, and the utilization of geothermal energy/waste heat is one of the key methods. When using geothermal energy, the rate of heat transfer decreases with time due to the precipitation of scale on the heat transfer surface, and periodic maintenance is required. Therefore, the running cost of utilizing geothermal energy is high. We focused on a rotary heat exchanger consisting of a rotating cylinder as the heat transfer wall and a fixed blade attached to the rotating cylinder for scraping the heat transfer surface. In this study, the heat recovery characteristic from chloride hot spring was experimentally evaluated. The results showed that scale formation on the heat transfer surface could be suppressed and the heat transfer characteristics could be maintained for one month.

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“…In the best case such electricity storage systems provide also grid stabilization with rotating masses. A concept with a combination of a Thermal Battery combined with rotating mass has been proposed in [2].…”

Section: Introductionmentioning

confidence: 99%

Electricity Storage With a Solid Bed High Temperature Thermal Energy Storage System (HTTES) - A Methodical Approach to Improve the Pumped Thermal Grid Storage Concept

Schneider¹,

Maier²,

Häcker³

et al. 2021

Atlantis Highlights in Engineering

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High Temperature Thermal Energy Storage (HTTES) systems offer a wide range of possible applications. Since electrical batteries such as Li-ion batteries suffer degradation and since complete battery-systems are expected not to fall to low cost levels (IEA-WEO report 2018 [1]) until 2040, it becomes economically more interesting to use thermal energy storage systems as 'Thermal Batteries' to store electrical energy. In this article an improved and optimized Thermal battery based on a closed Brayton-cycle is proposed (Carnotbattery). The improved electricity storage concept applies an efficient low-cost high temperature thermal energy storage technology for both, the hot-and the cold thermal storage. This concept not only allows for a bigger temperature spread and simplified operation, but also reduces CAPEX significantly. It is named enolcon-OPTES-Battery (Optimized Pumped Thermal Energy Storage-Battery).

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Electric thermal energy storage and advantage of rotating heater having synchronous inertia

Cited by 40 publications

References 21 publications

Molten Salt Storage for Power Generation

Molten Salt Storage for Power Generation

Long-term Experiment of Hot Spring Heat Recovery Using Rotary Heat Exchanger by Controlling Precipitation

Electricity Storage With a Solid Bed High Temperature Thermal Energy Storage System (HTTES) - A Methodical Approach to Improve the Pumped Thermal Grid Storage Concept

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