how do coffee machines heat water so fast?
In: Physics
It depends on the machine. Classic drip coffee machines use a “bubble pump” they heat a small amount of water (like a tablespoons worth). The steam bubble rises pushing the warm water ahead of it up and out on the coffee.
Keurig and other single cup coffee makers heat a cups worth of coffee at a time and hold it until you push the button. This is why when you power on a Keurig it takes a minute or two before it lets you use it.
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