Development of High Grade Heat Storage for integration with Liquid Air Energy Storage

他说：“储能是电力供应的重要一环，平衡能源需求和能源生产的变化。一种新的能源储存方法是使用冷藏空气来储存能量，直到需要时才使用。液态空气储能(LAES)利用电力将空气冷却到-196摄氏度，这是空气液化的温度。然后将液体储存在绝缘罐中，直到对储存的能量有需求。暴露在环境空气或工业过程中产生的废热会导致冷藏空气迅速再气化，体积扩大700倍；这种膨胀用于驱动涡轮机和发电。LAES在供应安全方面为电网带来了相当大的好处。其大规模、长时间的存储能力有助于平衡电网与发电和需求的变化，间歇性与可再生能源(如风力发电)在能源发电组合中的贡献越来越大有关。与传统储能方案相比，LAES系统的一个主要优势是可以将LAES系统放置在工业区内或现有发电机旁边，以捕获可用于产生气体的废热，从而提高系统的效率。英国中小企业Highview Power Storage在大规模、长期LAES储能方面处于世界领先地位。Highview的LAES系统目前正在大曼彻斯特的皮尔斯沃斯的一家示范工厂投入使用，该系统已被设计为使用现成的组件，在其他应用中得到验证，并具有较长的使用寿命(30年)，将技术风险降至最低。它还使用广泛可用的环保材料，如冷藏库中的砾石。示范工厂使用的是基于水的储热系统；虽然这代表了当前的最先进技术，但水有很大的局限性，Highview正在与布莱顿大学合作，寻求英国创新公司的支持，以开发一种替代的、创新的HGHS，对LAES过程的效率做出重大贡献。该项目将优化LAES技术并加速商业化。具体地说，该项目将开发一种高级蓄热解决方案(HGHS)，使Highview的LAES系统能够从工艺本身或从共用的贡献源回收较高温度的废热。提出了一种创新的方法，需要开发一种替代传热流体(HTF)，它与LAES的压力、传热、粘度、易燃性和毒性参数相关，并在实用、成本效益高的HGHS解决方案中提供优化的RTE的温度下运行。

"Energy storage is a vital aspect of electricity supply, balancing variation in energy demand and energy generation. A novel approach to energy storage uses refrigerated air to store energy until it is needed. Liquid Air Energy Storage (LAES) uses electricity to cool air to -196degC, the temperature at which it liquefies. The liquid is then stored in an insulated tank until there is a demand for the stored energy. Exposure to ambient air or waste heat from an industrial process causes rapid re-gasification of the refrigerated air and a 700-fold expansion in volume; this expansion is used to drive a turbine and generate electricity.LAES brings considerable benefits to the grid in terms of security of supply. Its large scale, long duration storage capability helps balance the grid against variation in generation and demand, with intermittency linked to the increasing contribution of renewable energy, such as wind power, in the energy generation mix. A major advantage over conventional energy storage options is that LAES systems can be placed within industrial estates or next to existing power generators in order to capture waste heat which can be used to create the gas; thus increasing the efficiency of the system.UK SME Highview Power Storage are world leaders in large scale, long duration LAES energy storage. Highview's LAES system, currently being commissioned in a demonstration plant in Pilsworth, Greater Manchester, has been designed to use off the shelf components, proven in other applications and with long lifespans (30 years), minimising technology risk. It also uses widely available and environmentally benign materials, such as gravel in the cold store. The demonstration plant uses a water based heat store; whilst this represents the current state-of-the-art, water has significant limitations and Highview, in partnership with the University of Brighton, are seeking Innovate UK support to develop an alternative, innovative HGHS that makes a significant contribution to LAES process efficiency. This project will optimise LAES technology and accelerate commercialisation.Specifically, the project will develop a High Grade Heat Store Solution (HGHS) that allows Highview's LAES system to recover higher temperature waste heat from the process itself or from contributory sources that are co-located. An innovative approach is proposed, entailing the development of an alternative heat transfer fluid (HTF) that correlates with the pressure, heat transfer, viscosity, flammability and toxicity parameters of LAES, and operates at temperatures that deliver optimized RTE within a practical, cost-effective HGHS solution."