Off-design model of concentrating solar power plant with thermochemical energy storage based on calcium-looping

SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems Pub Date : 2019-07-26 DOI:10.1063/1.5117755

C. Ortiz, M. Binotti, M. Romano, J. Valverde, R. Chacartegui

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引用次数: 14

Abstract

Dispatchability is a key issue to increase the competitiveness of concentrating solar power plants. Thermochemical energy storage systems are a promising alternative to molten salt-based storage because of the higher energy storage density and the possibility of increasing the storage period. Among possible thermochemical systems, the Calcium-Looping process, based on the multicycle calcination-carbonation of CaCO3, is a main candidate to be integrated as energy storage system within a scenario of massive deployment of concentrating solar power plants. The present manuscript goes beyond previous works by developing an off-design model of the system that leads to a more accurate discussion on system size and plant efficiency. A capacity factor as high as 58% is calculated with lower mass of stored products than in commercial solar plants while the calculated solar-to-electric daily efficiency varies between 17.1% and 20.1%. Simulation results suggest an interesting attractive potential of the Calcium-Looping integration.Dispatchability is a key issue to increase the competitiveness of concentrating solar power plants. Thermochemical energy storage systems are a promising alternative to molten salt-based storage because of the higher energy storage density and the possibility of increasing the storage period. Among possible thermochemical systems, the Calcium-Looping process, based on the multicycle calcination-carbonation of CaCO3, is a main candidate to be integrated as energy storage system within a scenario of massive deployment of concentrating solar power plants. The present manuscript goes beyond previous works by developing an off-design model of the system that leads to a more accurate discussion on system size and plant efficiency. A capacity factor as high as 58% is calculated with lower mass of stored products than in commercial solar plants while the calculated solar-to-electric daily efficiency varies between 17.1% and 20.1%. Simulation results suggest an interesting attractive potential of the Calcium-Loopi...

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基于钙环的热化学储能聚光太阳能电站非设计模型

可调度性是提高聚光太阳能电站竞争力的关键问题。热化学储能系统由于具有更高的储能密度和延长储能周期的可能性，是熔盐储能系统的一个有前途的替代方案。在可能的热化学系统中，基于CaCO3多循环煅烧碳酸化的钙循环过程是大规模部署聚光太阳能发电厂场景中集成作为储能系统的主要候选系统。目前的手稿超越了以前的工作，通过开发系统的非设计模型，导致对系统大小和工厂效率的更准确的讨论。与商业太阳能发电厂相比，在储存产品质量较低的情况下，计算出的容量系数高达58%，而计算出的太阳能发电日效率在17.1%到20.1%之间变化。仿真结果表明，钙环集成具有有趣的吸引力。可调度性是提高聚光太阳能电站竞争力的关键问题。热化学储能系统由于具有更高的储能密度和延长储能周期的可能性，是熔盐储能系统的一个有前途的替代方案。在可能的热化学系统中，基于CaCO3多循环煅烧碳酸化的钙循环过程是大规模部署聚光太阳能发电厂场景中集成作为储能系统的主要候选系统。目前的手稿超越了以前的工作，通过开发系统的非设计模型，导致对系统大小和工厂效率的更准确的讨论。与商业太阳能发电厂相比，在储存产品质量较低的情况下，计算出的容量系数高达58%，而计算出的太阳能发电日效率在17.1%到20.1%之间变化。模拟结果表明，钙环具有有趣的吸引潜力。

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SOLARPACES 2018: International Conference on Concentrating Solar Power and Chemical Energy Systems

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