An Adsorption-Compression Cold Thermal Energy Storage System (ACCESS)

吸附压缩冷热能存储系统（ACCESS）

• 批准号: EP/W027593/2
• 负责人: Zhibin Yu
• 金额: $ 95.38万
• 依托单位: University of Liverpool
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2024
• 资助国家: 英国
• 起止时间: 2024 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW027593%2F2
• 关键词: Adsorption; Compression; Cold; Thermal; Energy; Adsorption; Compression; Cold; Thermal; Energy

The cooling sector currently consumes around 14% of the UK's electricity and emits around 10% of the UK's greenhouse gases. Global electricity demand for space cooling alone is forecast to triple by 2050. Moreover, as air temperature increases, the cooling demand increases, but a refrigerator's Coefficient of Performance decreases. This results in a time mismatch between a refrigerator's efficient operation and peak cooling demand over a day. Clearly, this problem will deteriorate over the coming decades. Indeed, research by UKERC recently reported that cooling sector will cause a 7 GW peak power demand to the grid by 2050 in the UK. A solution is to employ cold thermal energy storage, which allows much more flexible refrigeration operation, thereby resulting in improved refrigeration efficiency and reduced peak power demand. Large-scale deployment of cold thermal energy storage could dramatically reduce this peak demand, mitigating its impact to the grid. Moreover, the UK curtails large amounts of wind power due to network constraints. For example, over 3.6TWh of wind energy in total was curtailed on 75% of days in 2020. Therefore, through flattening energy demand, cold thermal energy storage technology provides a means to use off-peak wind power to charge cold thermal energy storage for peak daytime cooling demand. This project, based on the proposed novel adsorption-compression thermodynamic cycle, aims to develop an innovative hybrid technology for both refrigeration and cold thermal energy storage at sub-zero temperatures. The resultant cold thermal energy storage system is fully integrated within the refrigerator and potentially has significantly higher power density and energy density than current technologies, providing a disruptive new solution for large scale cold thermal energy storage. The developed technology can utilise off-peak or curtailed electricity to shave the peak power demand of large refrigeration plants and district cooling networks, and thus mitigates the impacts of the cooling sector on the grid and also reduces operational costs.

该冷却部门目前消耗了大约14％的英国电力，并散发出英国温室气体的10％。预计到2050年，仅全球对太空冷却的需求将三倍。此外，随着空气温度的升高，冷却需求增加，但冰箱的性能系数会降低。这导致冰箱的有效操作与一天中的峰值冷却需求之间的时间不匹配。显然，这个问题将在未来几十年中恶化。确实，Ukerc的研究最近报道说，到2050年英国，冷却部门将对电网产生7 GW峰值的需求。一种解决方案是采用冷热能源存储，这使得更加灵活的制冷操作，从而提高了制冷效率并降低了峰值功率需求。冷热能源存储的大规模部署可以大大减少这种高峰需求，从而减轻其对网格的影响。此外，由于网络限制，英国减少了大量风能。例如，在2020年的75％的天数中，总共限制了3.6泰铢的风能。因此，通过平坦的能源需求，冷热储能技术提供了一种使用非高峰风能来为冷热量储存充电的方法，以达到高峰日期冷却需求。 该项目基于拟议的新型吸附 - 吸附 - 热力学循环，旨在开发一种创新的混合技​​术，用于在零下温度下用于制冷和冷热储能。所得的冷热储能系统完全集成在冰箱内，并且可能比当前技术具有明显更高的功率密度和能量密度，从而为大型冷热储能提供了一种破坏性的新解决方案。开发的技术可以利用非高峰或限制的电力来刮除大型制冷厂和地区冷却网络的峰值电力需求，从而减轻冷却部门对网格的影响，并降低运营成本。