Solar-assisted CO₂ heat pump achieves 18.7% COP increase as irradiance rises

T2Covered by 1 source · first reported by Utility Dive / pv magazine / Energy-Storage.news at 22 Oct, 10:01 UTC

Researchers in Italy have tested a 10 kW dual-source heat pump using CO₂ as a refrigerant and air or photovoltaic-thermal collectors as heat sources. The results show that solar operation can improve heating performance under favorable irradiance conditions, while an optimized source-switching…