PugJesus@piefed.socialM to HistoryPhotos@piefed.socialEnglish · 1 year agoInventor Charles S. L. Baker and his assistant, posing with friction heater, USA, 1906 ADmedia.piefed.socialimagemessage-square3linkfedilinkarrow-up10arrow-down10
arrow-up10arrow-down1imageInventor Charles S. L. Baker and his assistant, posing with friction heater, USA, 1906 ADmedia.piefed.socialPugJesus@piefed.socialM to HistoryPhotos@piefed.socialEnglish · 1 year agomessage-square3linkfedilink
minus-squareGreyEyedGhost@lemmy.calinkfedilinkarrow-up1·1 year agoHeat pumps are more than 100% efficient (if you consider the frame of reference to be the area whose temperature you want to control).
Heat pumps are more than 100% efficient (if you consider the frame of reference to be the area whose temperature you want to control).