In this study, molten salt thermal storage systems utilizing live and reheat steam as heat sources were proposed, and the steam ejectors were integrated to recover the residual
The novelties of the present study are (i) a novel Carnot battery system that integrates CaL thermochemical energy storage with coal-fired power plants, capable of
It has great potential to serve as an ideal large-scale long-term energy storage solution to enhance the flexibility of coal-fired power units. This paper proposes a novel coal
The coal-based integrated energy system is widely utilized and involves the integration of coal-fired power plants, photovoltaic energy, wind power generation plants, and
Solar aided coal-fired power generation (SACPG) is the most efficient and economical technology for reducing coal resource consumption and increasing solar energy
The E2S Power concept converts existing coal-fired power plants into energy storage facilities by substituting the E2S thermal energy
An S–CO 2 energy-storage cycle system is added to a 660 MW coal-fired power unit to increase operational flexibility. With a round-trip efficiency (RTE) of 56.14%, a
Download Citation | On May 1, 2025, Shutao Xie and others published Enhancing peak-shaving capacity of coal-fired power plant by coupling molten salt energy storage and steam
The flexibility transformation of coal-fired power plants (CFPP) is of significant importance for the new power system primarily based on new energy sources. Coupling
Abstract The rapid growth of renewable energy applications demands enhanced flexibility in conventional coal-fired power plants. To address this challenge, A novel hybrid
To address these challenges, this study proposes a novel system coupling molten salt energy storage and a steam accumulator based on cascade thermal energy utilization.
The low-carbon energy system has introduced the urgent demand for the ability of peak-shaving for coal fired power plants (CFPPs). A novel and efficient integration concept
The results indicate that under heat storage mode, similar peak shaving depths are achieved with both single-steam source and multi-steam source heating strategies.
coal-fired boilers are the industrial equivalent of that reliable old pickup truck in your garage. They get the job done, but man, they guzzle "fuel" like there''s no tomorrow. Enter
To accommodate high penetration of intermittent renewable power, including wind power and photovoltaic power, coal-fired power plants (CFPPs) are forced to enhance
A novel tower solar aided coal-fired power generation (TSACPG) system with thermal energy storage is proposed in this paper. Based on the principle of energy grade matching and
The subcritical CFPP burns coal in the boiler to release the chemical energy and generates high-temperature and high-pressure steam for power generation. Compared to the
The feasibility of the proposed system is further evaluated in terms of exergy and economy. The results demonstrate that the proposed SF-TES-CFPP (solar field, thermal energy storage
A coal-fired boiler with integrated thermal energy storage was dynamically modeled using Dymola and its accuracy was verified.
This study proposes a power generation strategy for coupling a thermal storage system using molten salt as heat storage materials with a thermal power plant, aiming to enhance grid
Abstract In the situation of severe energy and ecological problems, waste heat recovery is essential to achieve the current carbon neutrality. This paper proposes a solar
It is essential to develop supercritical carbon dioxide (sCO 2) power systems integrated with thermal energy storage (TES) to achieve efficient and flexible operation of
In the case of solar tower technology, which delivers higher efficiency and operating temperatures compared to solar trough technology, most studies focused on
An approach of high-efficiency utilization of solar energy was proposed, by which the high concentrated heat received by the solar tower was integrated to the supercritical coal
With the majority of the world''s energy demand still reliant on fossil fuels, particularly coal, mitigating the substantial carbon dioxide (CO 2) emissions from coal-fired
The simulation models were first verified based on different typical operating conditions of the coal-fired power unit. Subsequently, a theoretical design of the coal-fired
Therefore, how the flexibility of coal-fired power plants can be improved has become an increasingly crucial research topic, and integrating energy storage with coal-fired power plants
The proposed novel integration of coal-fired combined heating and power generation unit and compressed air energy storage is demonstrated with better performance in
This work focuses on developing two such energy storage technologies: Liquid Air Energy Storage (LAES) and Hydrogen Energy Storage (HES), and their integration
One of the most critical challenges facing China is enhancing the operational flexibility of coal-fired power plants (CFPPs), given the increasing reliance on renewable
Abstract: This paper proposed a novel integrated system with solar energy, thermal energy storage (TES), coal-fired power plant (CFPP), and compressed air energy storage (CAES)
Energy storage technologies offer a viable solution to provide better flexibility against load fluctuations and reduce the carbon footprint of coal-fired power plants by minimizing exergy losses, thereby achieving better energy efficiency.
Although coal-fired power plant has been coupled with thermal energy storage to enhance their operational flexibility, studies on retrofitting coal-fired power plants for grid energy storage is lacking. In this work, molten salt thermal energy storage is integrated with supercritical coal-fired power plant by replacing the boiler.
At present, large-scale energy storage technology is not yet mature. Improving the flexibility of coal-fired power plants to suppress the instability of renewable energy generation is a feasible path. Thermal energy storage is a feasible technology to improve the flexibility of coal-fired power plants.
Grid energy storage is key to the development of renewable energies for addressing the global warming challenge. Although coal-fired power plant has been coupled with thermal energy storage to enhance their operational flexibility, studies on retrofitting coal-fired power plants for grid energy storage is lacking.
Two possible options are explored here: combining solar energy with coal-fired power generation, and cofiring natural gas in coal-fired plants. Both techniques show potential. Depending on the individual circumstances, both can increase the flexibility of a power plant whilst reducing its emissions. In some cases, plant costs could also be reduced.
Several studies have been reported in the literature, particularly on power plant system modeling, and integration of sensible and latent heat-based energy storage systems with fossil power cycles , . Liquid air energy storage (LAES) is another form of energy storage that has been proposed for integration with fossil power plants.
