Feasibility and parametric studies of the performance and implication on ground thermal energy storage in short-term or diurnal operation as cold and hot storages

EnWave Toronto运营着世界著名的深湖水冷(DLWC)系统，该系统为市中心连通的商业建筑提供高效低碳的空调方式。由于DLWC技术是可再生的，比传统的电动冷水机组节省75%-83%的电能，从经济和低碳的角度来看，进一步利用和推广该技术将是有益的。因此，EnWave Toronto正在积极研究替代技术，如地热储存(GTES)，以进一步消除该地区的碳排放。EnWave Toronto有兴趣探索将高效制冷系统、DLWC和GTES相结合以在夏季高峰期提供更多制冷能力的可行性，以及探索将高效热泵系统、商业客户的数据中心废热和GTES相结合以在冬季高峰期全天提供更大供热能力的可行性。如果通过计算机模拟组合是可行的，则将对相关参数的范围进行参数研究，以建立针对短期或全天冷热热能存储的优化GTES的设计指南。这项研究将需要先进的计算设备、学科专业知识和复杂的计算程序，而这种合作就是朝着这个方向进行的。该项目是该公司致力于可持续技术和开发未来低碳区域供暖和制冷系统的一部分。这项为期六个月的研究由Ryerson大学的Wey Leong博士领导，将促进Ryerson和EnWave之间的合作，这将有利于EnWave在多伦多的业务，并将有助于为未来的研发活动建立牢固的合作伙伴关系。

Enwave Toronto operates the world renowned Deep Lake Water Cooling (DLWC) system which provides ahighly efficient and low-carbon means of air-conditioning for connected commercial buildings in the city'sdowntown core. Because the DLWC technology is renewable and uses 75% to 83% less electrical energy thanconventional electric chillers, it would be beneficial, in terms of economy and low-carbon means, to utilize andextend the technology further. Therefore, Enwave Toronto is actively perusing alternate technologies such asground thermal energy storage (GTES) to further de-carbonize the district. Enwave Toronto is interested inexploring the feasibility of combining high-efficient refrigeration system, DLWC and GTES to provideincreased cooling capacity during peak cooling in the summer, as well as in exploring the feasibility ofcombining high-efficient heat pump system, data-centre waste heat from their commercial customers andGTES to provide increased heating capacity during peak heating in the winter, on a diurnal basis.If the combinations are feasible through the computer simulations, a parametric study will then be performedfor ranges of relevant parameters in order to establish guidelines for the design of an optimized GTES forshort-term or diurnal cold and hot thermal energy storages. The study would require advanced computationalfacility, subject expertise, and sophisticated computational programs, and this collaboration is intended in thatdirection. This project is part of the company's commitment to sustainable technologies and the development offuture low-carbon district heating and cooling system.This six-month research headed by Dr. Wey Leong of Ryerson University will foster a collaboration betweenRyerson and Enwave, which would be beneficial to Enwave business in Toronto, and will help to build astrong partnership for future research and development activities.