Researchers at UNSW Sydney have harnessed the power of ultrasonic sound waves to make espresso-strength coffee with room temperature water, cutting energy use by up to 75%.
probably can be done, but ultrasound irradiation itself will warm up coffee a little. if all of it goes to heat, then it’s extra 20C or so so you’ll have to cool it down afterwards anyway
Better. Perfect would be using chilled water. I’m on a limited connection right now so I can’t investigate, but I’m curious to know if they tested.
probably can be done, but ultrasound irradiation itself will warm up coffee a little. if all of it goes to heat, then it’s extra 20C or so so you’ll have to cool it down afterwards anyway