SUCCES (Stored Up-valued Concentrated Cold Energy System)

SUCCES（储存升值集中冷能系统）

• 批准号: EP/W027712/1
• 负责人: Angad Panesar
• 金额: $ 62.73万
• 依托单位: University of Brighton
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW027712%2F1
• 关键词: SUCCES; Stored; Up; valued; Concentrated

Energy storage is an essential technology for balancing the differences in supply and demand in a sustainable power network reliant on intermittent renewable generation. Energy can be stored as electricity, as heat and chemically in a sustainable fuel and at different temporal and size scales. Short time variations in the power grid can be effectively managed using batteries but the battery technologies are too expensive for servicing the bulk long term storage requirements to balance variations in demand between seasons and extended periods of low renewable generation. Technologies with a slower response, lower round trip efficiency but lower capital base are preferred for these applications. Liquid Air Energy Storage (LAES) is a long duration storage technology being developed by Highview Power. Energy is stored thermally in three ways; as cold in liquid air and in a backed bed regenerator cold store and as heat in a molten salt hot store. An air liquefier is used to charge the LARS device. LAES has a sweet spot at large (>50MW) scale as plant efficiency increases and relative cost reduces with scale for this technology. But what would happen if a LAES plant could be efficiently deployed at smaller (<50MW) scale? The technology could then be integrated with other aspects of the energy network that require cooling at cryogenic temperatures such as the long term storage of bio methane and green hydrogen. In this project, we will investigate the integration of a small to mid scale LAES plant with the liquefaction of locally produced bio methane from waste, such as agriculture, managed grass land (such as parks and sports fields) and sewerage. Similarly, hydrogen produced by small to mid size electrolysers connected to local renewable generators requires a storage solution. We propose cold, pressurised storage of hydrogen at 80-90K which lowers the pressure required to store the gas (for an equivalent energy density) by a factor of 2 to 3 and avoids the high energy cost of cryogenic storage at 20K.Integration of LAES with methane and hydrogen storage opens up new revenue steams and shifts the economics to favour smaller plant serving local communities such as large farms, local authorities and water companies managing sewage waste. We propose a local rather than central solution as (a) the feedstocks for bio-methane production have a low energy density to local production and storage avoids transportation inefficiencies (b) Similarly local production and consumption of hydrogen avoids the need to move cold pressurised gas to bulk storage facilities and then to consumers and (c) imbedding the core electrical energy storage of the LAES plant closer to the end user has benefits in reducing the load on the transmission network.

储能是平衡依赖间歇性可再生能源发电的可持续电网供需差异的一项重要技术。能量可以以电、热和化学形式储存在可持续燃料中，并以不同的时间和规模储存。可以使用电池有效地管理电网中的短时间变化，但是电池技术对于服务于大规模长期存储需求以平衡季节之间的需求变化和低可再生发电的延长时期来说太昂贵了。对于这些应用，具有较慢响应、较低往返效率但较低资本基础的技术是优选的。液态空气储能（LAES）是Highview Power正在开发的一种长期储能技术。能量以三种方式热存储：作为液体空气中的冷量和背床再生器冷存储以及作为熔融盐热存储中的热量。空气净化器用于给LARS装置充电。LAES在大规模（> 50MW）下具有最佳点，因为工厂效率随着该技术的规模而增加并且相对成本随着该技术的规模而降低。但是，如果LAES工厂可以有效地部署在较小的规模（<50兆瓦）会发生什么？然后，该技术可以与需要在低温下冷却的能源网络的其他方面集成，例如生物甲烷和绿色氢的长期存储。在这个项目中，我们将研究一个小型到中型LAES工厂与液化当地产生的生物甲烷的整合，这些生物甲烷来自农业，管理的草地（如公园和运动场）和污水。同样，连接到当地可再生发电机的中小型电解槽生产的氢气需要存储解决方案。我们建议在80 - 90K的温度下对氢进行冷加压储存，这降低了储存气体所需的压力。LAES与甲烷和氢储存的集成开辟了新的收入来源，并将经济学转向有利于服务于当地社区的小型工厂，如大型农场，地方当局和水公司管理污水废物。我们提出了一个本地而不是集中的解决方案，因为（a）用于生物甲烷生产的原料具有低能量密度，以本地生产和储存避免了运输效率低下（B）类似地，氢的本地生产和消费避免了将冷加压气体移动到大容量储存设施然后移动到消费者的需要，以及（c）将LAES电站的核心电能存储器嵌入到更靠近终端用户的位置有利于减少传输网络上的负载。