Study of a water-source CO2 heat pump for residential use: experimental discharge pressure control and performance analysisYantong Li, Natasa Nord, Inge Håvard Rekstad, Stein Kristian Skånøy and Lars Konrad SørensenE3S Web Conf., 246 (2021) 06010DOI: https://doi.org/10.1051/e3sconf/202124606010