ABSTRACT
Through the unified construction and management of university buildings, district cooling and heating systems (DCHS) play an important role in the energy-saving transformation of university parks, and the use of renewable energy benefits energy saving and emission reduction. The lack of a coupling simulation model of the DCHS and renewable energy in the current research is not conducive to the prediction of system operation in practical engineering (Kathryn 2022; Lu et al. 2021). Therefore, this study considers a university in Shenyang as the background to simulate the DCHS of an air source heat pump (ASHP) coupled with a soil source heat pump (SSHP). The system uses SSHP as the cold source in summer and ASHP as the auxiliary heat source in winter. The TRNSYS platform was used to build the system, which was compared with the results of an existing system model simulation on campus. The comparison results showed that the DCHS system runs smoothly throughout the year, the energy consumption in the cooling season and the annual carbon emissions are significantly reduced, and the average COP of the unit is improved.
