B Home mobile air conditioning: Is this a contradiction to thermodynamics?

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Portable air conditioners are popular for cooling rooms, but their effectiveness relies on proper ventilation to expel hot air outside. There are two main types: heat pump units, which require an exhaust tube, and evaporative coolers, which do not and are less effective in humid climates. While evaporative coolers can be cost-effective during rare heat waves, they often lead to increased humidity indoors. The discussion highlights the importance of proper installation and ventilation for portable air conditioners to function efficiently. Overall, understanding the mechanics and limitations of these devices is crucial for effective home cooling solutions.
  • #31
hmmm27 said:
Ah, so very large coldside radiator required. (For some reason I previously thought it was in the 1/10atm range, not 1/100th : checked)
And this is a snag. Any self contained unit would have to use air because it involves only an air hose (or two), going outside with no heat exchanger 'outside on the wall'. These portable units are just so practical, compared with a whole system and the best system in most cases is surely to use good insulation, so the heat never gets inside in the first place. But you can't drive home with that in the car and begin using it in the minutes.

This issue will affect many people in Europe a lot more than it ever has so a re-think is necessary for house builders and (lol) the government.
 

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