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Comment on The more air conditions in an area the hotter becomes around it. In turn increasing the demand for AC. Talk about infinite money glitch.

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agressivelyPassive@feddit.de ⁨3⁩ ⁨weeks⁩ ago

In cities it actually does have an effect, especially in crowded ones. Millions of people in a relatively small area blasting AC “exhaust” out of their windows heat up the crammed air and in turn the buildings, streets, etc. which increases the heat island effect of cities.

Granted, it’s not a huge effect, but it’s measurable. First source I could find: euronews.com/…/fact-check-is-air-conditioning-mak…

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captain_aggravated@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
see I’ve been wondering if a heat pump system could heat an oven hot enough to bake bread. use environmental heat to manufacture Wonder Bread or something.

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- NeatNit@discuss.tchncs.de ⁨3⁩ ⁨weeks⁩ ago
  I don’t know the answer, but it this did work it would both make the outside of the oven super cold and be so slow to warm up that it would be pointless. Keep in mind that you have to get stuff in and out so air exchange is inevitable, every time you open the door you’d be reducing the heat substantially and it would take a long time to rise back up.
  
  Also my gut feeling is that any practical implementation wouldn’t be as energy efficient as you’d hope.
  
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  - captain_aggravated@sh.itjust.works ⁨3⁩ ⁨weeks⁩ ago
    The other part of the idea is use the heat pump to not only heat an oven to bake bread (or do some other industrial heating process) but have the other end cool some process that produces waste heat, such as a data center or something. Or air condition a warehouse.
    
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- intensely_human@lemm.ee ⁨3⁩ ⁨weeks⁩ ago
  I don’t see why it shouldn’t be able to. You might need concentric shells depending on the power of the heat pump.
  
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  - Mubelotix@jlai.lu ⁨3⁩ ⁨weeks⁩ ago
    [deleted]
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    intensely_human@lemm.ee ⁨3⁩ ⁨weeks⁩ ago
    I don’t see how? Using heat pumps to concentrate heat doesn’t seem like a violation of any thermodynamic laws?
    
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muntedcrocodile@lemm.ee ⁨3⁩ ⁨weeks⁩ ago
Huh guess so. But still 2.4 degrees ain’t a whole lot (well except on a global scale lol).

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- agressivelyPassive@feddit.de ⁨3⁩ ⁨weeks⁩ ago
  Cities are already about 5C hotter than the surrounding countryside. Adding this increase on top, means 7.5C.
  
  4OC in the countryside is already bad, 47,5C in the city is deadly for a lot of people.
  
  I think you underestimate, how deadly heat can be: en.m.wikipedia.org/wiki/Wet-bulb_temperature
  
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  - ribboo@lemm.ee ⁨3⁩ ⁨weeks⁩ ago
    Wouldn’t those 2.5C already be included in cities being 5c warmer…?
    
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    agressivelyPassive@feddit.de ⁨3⁩ ⁨weeks⁩ ago
    No, since most cities are not fully air conditioned.
    
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