Demonstration system of pumped heat energy storage (PHES) and its round-trip efficiency
Demonstration system of pumped heat energy storage (PHES) and its round-trip efficiency
复制标题
抽水蓄能（PHES）示范系统及其往返效率
DOI：
10.1016/j.apenergy.2022.120580
复制
发表时间：
2023
期刊：
影响因子：
11.2
通讯作者：
Ameen M
中科院分区：
文献类型：
--
作者：
Ameen M
在旨在提高电网效率和稳定性的已知储能技术中，泵送热能存储（PHES）被许多人认为是有前途的候选者，因为其灵活性、扩大规模的潜力和每个储能单元的低成本。虽然有许多示范系统正在开发中，但目前唯一大规模实现的PHES示范系统位于英国汉普郡。本文的目的是目前的结果和分析，从其调试和测试的一部分，正在进行的研究。该系统的设计提供了一个标称功率大小为150千瓦和能量存储容量为600千瓦时为8小时的存储周期。这项工作提供了系统往返效率（RTE）的证据，RTE被认为是大规模储能技术的基本性能指标。最近在部分负荷下进行的热泵/发动机测试记录的压力-容积（P-V）测量结果提供了有关整体性能的有用见解。还开发了模型来模拟系统，以最终预测满负荷条件下的性能。首先描述了系统和操作原理，其次是数学建模，概述了组件内热力学过程中涉及的传热机制和相关的关键损失，最后给出了结果，并在不同的操作条件下使用不同的工作气体进行比较。研究结果与早期的研究结果吻合良好，表明预期的电对电RTE与其他成熟技术（如抽水蓄能和压缩空气储能）相当。并对系统的循环运行进行了讨论。与负载均衡循环操作相比，一次性存储循环导致较低的RTE，其中由于稳定的填充床行为和初始瞬态后的更好利用率，效率显著提高。
Among the known energy storage technologies aiming to increase the efficiency and stability of power grids, Pumped Heat Energy Storage (PHES) is considered by many as a promising candidate because of its flexibility, potential for scale-up and low cost per energy storage unit. Whilst there are numerous demonstration systems under development, as it stands the only PHES demonstration system to be realised at scale is located in Hampshire, UK. This paper aims to present the results and analysis obtained from its commissioning and testing as part of an on-going study. The system was designed to offer a nominal power size of 150 kWeand energy storage capacity of 600 kWhefor an 8-hour storage cycle. This work presents evidence of the system Round-trip efficiency (RTE), which is considered as a fundamental performance metric for large-scale energy storage technologies. Recorded Pressure-Volume (P-V) measurements from recent heat pump/engine testing at part-load offers useful insight in terms of overall performance. Models are also developed to simulate the system to finally predict the performance at full-load conditions. The system and principle of operation are described first, followed by mathematical modelling outlining heat transfer mechanism and associated key losses involved in thermodynamic processes within components, and finally results are presented and compared at different operating conditions using different working gases. The results show good agreement with earlier studies, which indicate that expected electricity-to-electricity RTE is quite comparable to other mature technologies such as Pumped Hydropower Storage and Compressed Air Energy Storage. The cyclic operation of the system is also discussed. One-off storage cycle results in lower RTEs compared to a load-levelling cyclic operation where the efficiency is significantly improved due to stable packed-bed behaviour and better utilisation after an initial transient state.
登录
查看更多内容
往复式压缩机和膨胀机中热致热力学损失的模拟：真实气体效应的影响
影响因子：
6.4
作者：
A. Taleb;C. Barfuss;P. Sapin;A. J. White;D. Fabris;C. Markides
通讯作者：
C. Markides
影响因子：
9.4
作者：
C. Willich;Alexander J. White
通讯作者：
C. Willich;Alexander J. White
影响因子：
10.4
作者：
J. McTigue;Pau Farres-Antunez;Kavin Sundarnath J;C. Markides;Alexander J. White
通讯作者：
J. McTigue;Pau Farres-Antunez;Kavin Sundarnath J;C. Markides;Alexander J. White
往复式机器气缸内部传热关联式的开发
DOI：
--
发表时间：
2021
期刊：
影响因子：
--
作者：
Bartłomiej Rutczyk;I. Szczygiel
通讯作者：
I. Szczygiel
DOI：
10.1177/0957650916668447
发表时间：
2016-09
期刊：
Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy
影响因子：
--
作者：
Alexander J. White;J. McTigue;C. Markides
通讯作者：
Alexander J. White;J. McTigue;C. Markides