JAILCD2025-031: Study on Energy Saving Effect of Transmission and Distribution System in Ice Storage Systems

Abstract

With the development of society, excessive greenhouse gas emissions have increased the process of global warming. Severe climate change in the future will seriously affect human production and life. Therefore the research on how to make the energy system more energy efficient and reduce pollutant emissions becomes crucial. In this study, the performance and energy saving effect of using variable speed pumping strategy applied to ice storage system is investigated based on the case of actual ice storage system. The results show that the application of the variable speed pump operation strategy in the ice storage system will have some energy saving effect and reduce the annual operation cost by about 4% relative to the constant frequency pump operation strategy. This study also investigates the energy efficiency and adaptability of cooling system operation in different climate zones and future temporal frameworks based on measured meteorological data from different climate zones and the CMIP6 climate prediction model. It was found that Guangzhou city, which is located in the hot summer and warm winter zones and has higher annual cooling load demand, has the best energy saving effect by using the variable frequency pump strategy. And in the background of future climate change, compared with the baseline scenario, the ice storage system with variable speed pumping strategy is better adapted and more energy efficient, with annual total energy savings of 37.46%-43%, total cooling capacity savings of 46.53%-53.07%, and total operating cost savings of 38.5%-45.32%.