Analysis of the ground-source heat pump operation with various heat-carrier fluids in the lower heat sourceEwelina Stefanowicz, Małgorzata Szulgowska-Zgrzywa and Natalia Fidorów-KaprawyE3S Web Conf., 44 (2018) 00168DOI: https://doi.org/10.1051/e3sconf/20184400168