日常生活中的科学
Why does a pressure cooker cook faster?
At fixed volume and amount, doubling absolute temperature in the ideal model doubles pressure.
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简短答案
At fixed volume and amount, doubling absolute temperature in the ideal model doubles pressure.
真正发生了什么？
Combustion releases energy to the surroundings; at constant pressure this is described by a negative enthalpy change.
一个有用的直观图景
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Higher pressure raises water's boiling temperature. Food can therefore cook in liquid water and steam at a temperature above the usual boiling point at standard atmospheric pressure.