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首页> 外文期刊>Journal of Energy Storage >Design analysis of a particle-based thermal energy storage system for concentrating solar power or grid energy storage
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Design analysis of a particle-based thermal energy storage system for concentrating solar power or grid energy storage

机译:用于集中太阳能电网储能的粒子热能储存系统的设计分析

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Energy storage is becoming indispensable for increasing renewable energy integration, and it is critical to the future low-carbon energy supply. Large-capacity, grid scale energy storage can support the integration of solar and wind power and support grid resilience with the diminishing capacity of baseload fossil power plants. With the development of thermal energy storage (TES) for concentrating solar power systems, standalone TES for grid integration becomes attractive due to the declining renewable generation cost and an increasing need for energy storage. The standalone TES system introduced in this paper can play a big role in the carbon-free energy future with capacity larger than batteries and cost likely lower than other energy storage methods such as pumped storage hydropower and compressed air energy storage, both of which also have geological limitations. To this end, we describe a TES system that uses stable, inexpensive solid particles as a TES media to provide scalable, low cost energy storage. The particle-based TES has the ability to drive various thermal power cycles including conventional steam-Rankine, air Brayton turbine with combined-cycle ability, or the emerging supercritical carbon dioxide Brayton power cycle. This work describes the containment design method including a concrete silo and an internal-insulation layer for the particle-TES system. The economic analysis shows significantly low storage cost when the particle-TES is integrated with Brayton combined-cycle power generation. The paper shows the design approach of the particle-TES system and its economic potential for bulk energy storage. The advantage of the particle-TES system as a promising bulk energy storage method is its ability to economically support dispatchable renewable grid penetration for larger capacity and longer discharging hours than current battery storage technologies.
机译:储能越来可接受,即增加可再生能源集成,对未来的低碳能源供应至关重要。大容量,网格秤储能可以支持太阳能和风力电力的集成,并支持电网弹性,并通过Baseload化石发电厂的容量递减。随着用于集中太阳能系统的热能存储(TES),由于可再生的生成成本和越来越需要储能需求,网格集成的独立TES变得有吸引力。本文介绍的独立TES系统可以在碳自由能量未来发挥重要作用,容量大于电池的容量,并且成本低于其他能量存储方法,如泵送储存水电和压缩空气储能,这两者也具有地质局限性。为此,我们描述了一种使用稳定,廉价的固体颗粒作为TES介质的TES系统,以提供可扩展,低成本的能量存储。粒子基TE具有能够驱动各种热功率循环,包括传统的蒸汽Quin-rankine,空气Brayton涡轮机,具有组合循环能力,或新出现的超临界二氧化碳Brayton电力循环。这项工作描述了包含混凝土筒仓和用于粒子TES系统的内绝缘层的容纳设计方法。当粒子与布雷顿合并循环发电集成时,经济分析显示出明显的储存成本。本文显示了粒子系统的设计方法及其批量储能的经济潜力。粒子TES系统作为有希望的散装能量存储方法的优点是其能够经济地支持可调度的可再生电网渗透,以便比电流电池存储技术更大的容量和较长的排出小时。

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