Thermo-acoustic heat pump
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Technology Description
Thermoacoustic heat pumps work by using an acoustic pressure wave to disburse heating or cooling effects, and generally feature a stack, resonator and heat exchangers. Two recent examples are the Equium heat pump, which rather than a compressor uses a patented sound generator at its core, and BlueHeart Energy, which works with two pistons that oscillate at a frequency of 100 Hz in a closed pressure vessel filled with 50 bar helium. Thermoacoustic heat pumps can reportedly reach higher or lower temperatures than conventional heat pumps, and do not require refrigerants.
Relevance for Net Zero
The thermoacoustic heat pump is a significantly smaller unit with excellent modulating capability and temperature flexibility, and does not require refrigerants.
Key Countries
Europe, China, Japan, United States
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