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[QUESTION] What are your favorite spices to use in soups?
Other Cooking Communities:
[email protected] - Lemmy.world's home for BBQ.
[email protected] - Showcasing your best culinary creations.
[email protected] - All things sous vide precision cooking.
[email protected] - Celebrating Korean cuisine!
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Thermodynamics question: do you think it is more or less efficient to burn coal or natural gas, use that heat to boil water to turn a turbine, generate enough of a surplus to avoid brownouts and blackouts, transmit that power over long distance, radiating energy the entire way and losing more at every transformer power station eventually using energy to boil a pot of water...
Or to burn gas to boil a pot of water directly.
I own stock of energy producers and transporters in my 401k, so I'm extremely glad those in power get this question wrong. But I also know that wrongness has a cost.
And before you say "solar" please realize capacity does not equal production. Germany is on the forefront of renewable energy, and generates 10.4% of power from solar compared to 20.1% from lignite, the dirtiest possible coal. Hard coal, natural gas and lignite add up to 11.3 + 13.3 + 20.1 = 44.6%. United states has solar at 3.93% of our energy mix, with 37.82% generated from natural gas.
A substantial proportion of the heat from burning gas on a stovetop in the usual manner does not heat the content of the pot, so the difference in thermal efficiency between electric and direct gas heating may not be as large as you might expect. This factor could probably be improved with different stove designs though (cheap burners do a worse job of putting the heat where it does the most work).
Additionally, gas ranges impact indoor air quality a lot more than electric stovetops, and gas delivery to homes leaks into the atmosphere a fair amount of gas with high greenhouse potential (I work for a gas pipeline company on leak tracking software) so there are other tradeoffs that one should consider beyond just thermal efficiency.
I don't think there's a one-size-fits-all answer here, both are good options for different situations.
Energy efficiency is only part of the equation. Combustion inside the home also worsens air quality and has the small risk of gas leaks.
It is also possible to reduce the carbon footprint of an electric range (either coils or induction) by changing the energy mix feeding it. It is not possible to due that with a gas range.
https://www.youtube.com/channel/UCy0tKL1T7wFoYcxCe0xjN6Q. Technology Connections has good videos on induction and gas range efficiency and emissions.