An experimental study on storing thermal energy in packed beds with saturated steam as heat transfer fluid

Edwards, Jacob; Bindra, Hitesh

doi:10.1016/j.solener.2017.08.065

Cited by 12 publications

(6 citation statements)

References 22 publications

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“…Edwards and Bindra 33 studied the thermal behavior of packed bed systems using steam as heat transfer fluid. The heat transfer performance of the system by using the saturated steam was compared with the airflow to understand the thermal gradients at different heat inputs.…”

Section: Sensible Energy Storage Technology and Innovationsmentioning

confidence: 99%

Techno-economic analysis of thermal energy storage systems

Patil

Kumar

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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The rising energy demand can be met by increasing the share of renewable energy by overcoming the barriers of poor conversion efficiency, intermittent energy supply, and lower thermo-economic viability. Thermal energy storage technology can play a pivotal role in addressing these challenges. Thermal energy storage systems are still in the developing phase due to low energy density, higher investments, and poor storage efficiency. The present study is carried out to disseminate updated information pertaining to the technological innovations and performance analysis of different types of thermal energy storage systems. The primary focus of this study is to present a critical analysis and discussion on the current status of thermal energy storage technology that can help identify the thrust areas of future research for improved techno-economic designs. The analysis unfolds the need to reduce the size of sensible energy storage systems by enhancing the volumetric heat transfer rates and improving the thermal response of latent energy storage systems by enhancing the thermal conductance of phase change materials. The thermal response of the latent energy storage systems can be improved by the addition of extended surfaces, composites of PCM and metal foam, PCM, and metal powder. Hybrid systems are relatively new therefore more explorations are needed for ensuring the compactness and the economic feasibility of these systems.

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Section: Sensible Energy Storage Technology and Innovationsmentioning

confidence: 99%

Techno-economic analysis of thermal energy storage systems

Patil

Kumar

2023

Proceedings of the Institution of Mechanical Engineers, Part A:

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“…The use of various materials for both low-and high-grade TES systems can be found in the work of Gautam and Saini. 103 For medium-grade applications (temperatures between 100°C and 400°C), concrete bricks and bauxite are generally suggested thanks to their availability and affordability, 47,104 whereas for higher temperature storage (above 400°C), materials such as recycled ceramics, 105 honeycomb ceramic, 106 cast steel, 107 siliceous rocks, 108 basalt rocks, 109 basalt glasses, 110 sintered ore, 111 various concrete based materials [112][113][114] (including a mixture of concrete with phase change material 25 ), fine-grained materials (such as silica sand, quartz gravel, and basalt), 115 basalt fiber, 116 refractory blocks, 47 firebrick resistance material, 117 industrial wastes, 118 demolition waste based sensible heat materials (mainly composed of CaO, SiO 2 , and Fe 2 O 3 ), 119 and industrial by-product materials (from the potash industry) 120 are suggested. A recent study compared the energy recovery efficiency (the ratio of the heat released during discharging to the total energy consumption in a complete storage cycle) of various solid materials used in a packedbed TES, 121 and highlighted the suitability of sintered ore particles as the storage material at temperatures above 600°C.…”

Section: Use Of Different Storage Materials In Rtes Systemsmentioning

confidence: 99%

Progress on rock thermal energy storage (RTES): A state of the art review

Amiri

Ermagan

Kurnia

et al. 2023

Energy Science & Engineering

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Thermal energy is one of the most widely encountered energy forms in our daily life. To ensure efficient utilization and conversion of this energy, the balance between supply and demand needs to be maintained. For this purpose, thermal energy storage is required. There are various thermal energy storage systems available; one of the most basic is sensible thermal energy storage which includes rock thermal energy storage (RTES). This rock‐based energy storage has recently gained significant attention due to its capability to hold large amounts of thermal energy, relatively simple storage mechanism and low cost of storage medium. Accordingly, numerous studies have been conducted to elucidate the basic flow and heat transfer mechanism and to evaluate the performance of this energy storage. The major technical challenges hindering the wide adoption of this technology are the enormous pressure drop across the storage and nonoptimal heat transfer from the heat transfer fluid to the storage medium and vice versa. These issues will directly and indirectly affect the overall cost (capital, operational, and maintenance costs) of the system. To eliminate this issue and assist further development of this technology, it is crucial to compile and extract important findings from these previous studies, identify the challenge and research gap, and draw guidelines for the upcoming research and development. At the moment, this kind of compilation does not exist. Hence, this paper is prepared with the primary objective to comprehensively review the current technology and development of RTES and to propose a potential way forward based on the pain point identified. Discussion on the nontechnical aspect such as policy and regulations as well as community awareness will also be outlined and discussed.

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“…4) consists of a pressure vessel filled with solid pebbles or other heat storage media with a steam valve at the top and water outlet at the bottom. 51,52 Heat is stored as sensible heat in the pebbles. To charge the system, steam injected into the pebble bed condenses as the cold pebbles are heated and water exits from the bottom of the vessel.…”

Section: Iva2b Steam Heating Of Packed-bed Thermal Energy Storagementioning

confidence: 99%

Variable and Assured Peak Electricity Production from Base-Load Light-Water Reactors with Heat Storage and Auxiliary Combustible Fuels

Forsberg

2018

Nuclear Technology

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In a low-carbon world (nuclear, wind, solar, and hydro) there is the need for assured dispatchable electricity to replace the historical role of fossil fuels. Base-load reactors can provide variable electricity to the grid by (1) sending some of their output (steam) to storage at times of low electricity prices and (2) using stored heat to produce added peak electricity at times of high electricity prices. Heat storage (steam accumulators, sensible heat, etc.) is less expensive than electricity storage (batteries, hydro pumped storage, etc.). The added cost of incrementally larger or standalone turbine generators for peak electricity production is small. However, energy storage systems (heat or electricity) can't provide assured capacity for extreme events, be it supply side (extended low-wind or low-solar conditions in systems with high wind or solar capacity) or demand side (long periods of cold or hot weather). With heat storage systems there is the option to provide peak electricity output when heat storage is depleted by heat addition with a water-tube boiler using natural gas, biofuels, or ultimately hydrogen. Fuel consumption for assured peaking capacity is small because most of the time the heat storage system meets peak electricity demands. The same systems enable reliable low-cost heat production for industry. Such systems enable an all nuclear or nuclear/hydro/ wind/solar/geothermal low-carbon electricity grid.

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An experimental study on storing thermal energy in packed beds with saturated steam as heat transfer fluid

Cited by 12 publications

References 22 publications

Techno-economic analysis of thermal energy storage systems

Techno-economic analysis of thermal energy storage systems

Progress on rock thermal energy storage (RTES): A state of the art review

Variable and Assured Peak Electricity Production from Base-Load Light-Water Reactors with Heat Storage and Auxiliary Combustible Fuels

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