The PERSEO line of air-source herat pumps, with a COP of 3.5 in cooling mode and 4.0 in heating mode, is viable in colder regions, Tecnofreddo says.
Dutch start-up SoundEnergy uses thermoacoustics to change waste or solar heat into cooling, without refrigerants or vapor compression.
The awards recognize excellence in advancing natural refrigerant technologies; nominations close on September 16, 2019.
Migros Ticino, a cooperative that is part of Swiss retail giant Migros, has been at the forefront of the CO2 revolution in HVAC&R since 2009.
Tracing the growth of natural refrigerants through the first 100 issues of Accelerate magazines from around the world