Analysis and optimisation of packed-bed thermal reservoirs for electricity storage applications
Analysis and optimisation of packed-bed thermal reservoirs for electricity storage applications
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DOI：
10.1177/0957650916668447
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发表时间：
2016-09
期刊：
影响因子：
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通讯作者：
Alexander J. White;J. McTigue;C. Markides
中科院分区：
文献类型：
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作者：
Alexander J. White;J. McTigue;C. Markides
几种新兴的电能存储技术利用填充床储层来存储热能，以便随后转换回电能。本文介绍了该类油藏在瞬态和稳态循环工况下的分析与优化。重点是热力学问题，但也包括一个简单的成本计算模型，以确定成本因素对主要设计参数的影响。本文的主要部分致力于对充填层进行分段（或分层），这是以前提出的同时实现高储存效率和充分利用水库的一种手段。作为示例，我们对三种不同的储热器进行了建模，分别对应于抽水蓄能系统的冷热库，以及适合与绝热压缩空气蓄能集成的更大的储热器。
Several emerging electrical energy storage technologies make use of packed-bed reservoirs to store thermal energy for subsequent conversion back to electricity. The present paper describes analysis and optimisation of such reservoirs under transient and steady-state cyclic operation. The focus is on thermodynamic issues, but a simple costing model is also included in order to determine the influence of cost factors on the main design parameters. A major part of the paper is devoted to segmentation (or layering) of the packed beds, which has previously been proposed as a means of simultaneously attaining high storage efficiency and full utilisation of the reservoirs. As illustrative examples, three different reservoirs are modelled, corresponding to the hot and cold thermal stores of a pumped thermal energy storage system, and a larger thermal store suitable for integration with adiabatic compressed air energy storage.