DonR
Major Contributor
French startup unveils new residential thermo-acoustic heat pump
Equium has developed a new thermo-acoustic heat pump core that reportedly produces 3 kW to 4 kW of heat for every kilowatt of power it consumes. It says the refrigerant-free device could generate domestic hot water at temperatures of up to 80 C.
www.pv-magazine.com
Heat pump uses a "hi-fi" speaker as a compressor.