Thermal electricity storage by a thermodynamic process: study of temperature impact on the machines
Thermal electricity storage by a thermodynamic process: study of temperature impact on the machines
复制标题
热力学过程的热电存储：温度对机器影响的研究
DOI：
10.1016/j.egypro.2013.07.106
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
G. Descombes
中科院分区：
文献类型：
--
作者：
C. Périlhon;S. Lacour;P. Podevin;G. Descombes
本文介绍了不同的方法来储存电力，以克服可再生能源的不稳定性。在回顾现有储能技术的基础上，提出了一种大规模储能的新方法。该系统基于将电转化为热的高温热泵原理。这种热能被储存在耐火材料中，并在后期通过焦耳循环转化为电能。第一种模式-能量储存-需要使用涡轮机-压缩机和涡轮机-在与通常遇到的条件不同的条件下运行。特别是，为了使该过程有效，压缩机必须在高温（500至1000° C）下运行。由于市场上没有能够在这种条件下运行的压缩机，这是该工艺中的一个主要技术障碍。本文介绍了燃气轮机领域的最新进展，包括高压涡轮机叶片的最新进展，以便使其适应压气机。这些进步主要导致镍基高温合金的组成及其实现（单晶）的变化，以实现约950 °C的最高壁温。
This paper presents different ways of storing electricity to overcome the intermittency of renewable energies. After reviewing existing storage technologies, a new way of storing electricity thermodynamically on a large scale is presented. This system is based on the principle of a high temperature heat pump that converts electricity into heat. This thermal energy is stored in refractory materials, and at a later stage converted into electricity by means of a Joule cycle. The first mode -of energy storage- requires the use of turbomachinery - compressors and turbines - to operate under conditions different from those usually encountered. In particular, for the process to be efficient, the compressor must operate at high temperatures (500 to 1000° C). This represents a major technological barrier in the process due to the market unavailability of compressors capable of operating under such conditions. In this study the latest advances in the field of gas turbines are presented, including those concerning high pressure turbine blades, in order to adapt them to the compressor. These advances result mainly in changes in the composition of nickel-based superalloys and their implementation (single crystals) to achieve maximum wall temperatures around 950 °C.