The best Material used in Thermal energy storage for high efficiency and optimizzed cost?

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Adel Ben Lakhdhar Oueslati

The integration of high-capacity thermal energy storage (TES) materials can revolutionize energy economics by enhancing efficiency, reducing costs, and stabilizing supply in renewable energy systems in several ways:

Enhanced Energy Efficiency: High-capacity TES materials allow for more efficient capture and storage of excess thermal energy, reducing waste and optimizing energy use. This is particularly beneficial in industrial processes, district heating, and power generation.

Cost Reduction: By reducing reliance on expensive peak-time electricity production and enabling better load management, TES lowers operational costs for industries and energy providers. It also decreases the need for costly backup power sources like gas turbines.

Renewable Energy Stabilization: TES helps address the intermittent nature of renewable energy sources (solar and wind) by storing surplus energy when production is high and releasing it when demand increases. This leads to a more reliable and balanced energy supply, reducing dependency on fossil fuels.

Grid Resilience and Demand Flexibility: TES enhances grid stability by absorbing excess electricity during low demand and supplying energy during peak hours. This reduces grid congestion, enhances demand response, and minimizes the risk of blackouts.

Decarbonization and Sustainability: By enabling longer-duration energy storage and reducing fossil fuel consumption, TES contributes to lowering carbon emissions and promoting a cleaner, more sustainable energy economy.

Economic and Industrial Growth: The development and commercialization of advanced TES materials can stimulate new industries, create jobs, and drive innovation in energy storage technologies, fostering economic growth.

Overall, high-capacity TES materials provide a cost-effective, scalable, and sustainable solution for optimizing energy systems, reducing costs, and ensuring a stable and efficient energy economy.

Jorge Morales Pedraza

Several materials stand out when it comes to thermal energy storage (TES) for high efficiency and optimized cost. These materials are, according to Zwien Ma and others, the following:

Molten Salts are widely used in TES systems due to their high heat capacity and ability to operate at high temperatures. They are also commonly used in concentrated solar power (CSP) plants.

Phase-change materials (PCMs): PCMs, such as paraffin wax and certain salt hydrates, store and release energy during phase changes (e.g., from solid to liquid). They are highly efficient and can store large amounts of energy in a small volume.

Water: Water is a cost-effective and efficient medium for sensible heat storage due to its high specific heat capacity. It is commonly used in residential and commercial heating systems.

Solid Particles: Novel TES systems using solid particles are being developed for grid electricity storage. These systems offer high efficiency and cost-effectiveness.

These materials are chosen based on their thermal properties, cost, and suitability for specific applications. By selecting the right material, TES systems can achieve high efficiency and optimized cost.