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%.
They’re talking about commercial scale coffee products and coffee flavoured products (bottled coffee drinks, instant coffee, etc.), where a reduction of 75% of the energy consumption could not only be very profitable, but also helpful in hitting environmental targets. Coffee is already a bit of an environmental nightmare when it comes to water usage in farming, so lessening the impact of commercial coffee is definitely a plus.
if all that energy is used to boil water and we’re cutting that energy use by 3/4 then it’s saving 70Wh (not kWh) per litre, or 70kWh per cubic meter. that’s not much
They’re talking about commercial scale coffee products and coffee flavoured products (bottled coffee drinks, instant coffee, etc.), where a reduction of 75% of the energy consumption could not only be very profitable, but also helpful in hitting environmental targets. Coffee is already a bit of an environmental nightmare when it comes to water usage in farming, so lessening the impact of commercial coffee is definitely a plus.
if all that energy is used to boil water and we’re cutting that energy use by 3/4 then it’s saving 70Wh (not kWh) per litre, or 70kWh per cubic meter. that’s not much
When you’re dealing with thousands of litres per hour, it’s a fair amount.