A new type of heat pump can match current air conditioning systems in terms of efficiency Shutterstock/Richard Peterson
A heat pump that uses sound to cool is three times as efficient as previous designs.
Heat pumps cool buildings by removing heat from the inside and pushing it outside, like a refrigerator. But unlike a refrigerator, they can also heat an enclosed area by reversing the process. To top it off, heat pumps are typically more efficient than conventional heating and cooling devices.
at Technion-Israel Institute of Technology in Haifa and his colleagues wanted to see if they…
