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

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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.