I have friends who are very tolerant (I think & hope!) of my messaging.pic.twitter.com/alDtLmlbbv
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Yeah! Natural gas based power plants are about 50% energy efficient (source: https://en.wikipedia.org/wiki/Combined_cycle_power_plant#Difference_between_HHV_and_LHV …). But for a laptop, if we used oil to power it, we'd need an internal combustion engine which would make the laptop much heavier...
Why does it need to be very heavy? Why not try to invent a very small, very light approach? (Not entirely wild about this idea, for climate reasons. But it's fun to think about a bit.)
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Heat engine efficiency is governed by 2nd law of thermo (Carnot theorem). To achieve high efficiency, radiators in an ICE & cooling towers in a power plant need to have large surface areas as they dissipate heat through convection. Other option is to burn fuel at very high temp.
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You can get a very large surface area in a tiny volume. Same essential idea as space-filling curves (though different). Requires fans or something similar to rapidly remove heat.
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Apple was working on hydrogen cells at some point. Not combustion, but it's another idea
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