Research and practice of water source heat pump technology in Heyi stationShiyao He, Yongxiang Ren, Kai Jiao, Jun Deng, Yiming Meng, Le Liu, Jinshuai Li and Renjie LiE3S Web Conf., 218 (2020) 01004DOI: https://doi.org/10.1051/e3sconf/202021801004