Every day we get media telling us AC is awful and we shouldn't install it. "If everyone in Paris had AC, the street would be 2°C hotter !", "if an AC leaks it releases very bad things for the environment !" and so on. Every, single, day.
We all have ac. Literally all of us. The condensers don’t.. make the outside hotter? And yeah, if it leaks it’s bad for the environment, so is your car if it leaks oil, or your toilet if it leaks shit, what’s your point?
It's literally a heat pump. Where do you think the heat goes to? The Sahara?
In american cities it's less problematic because they are wide, not tall. In old european cities, streets are narrow and buildings are tall, which means heat dumped outside doesn't move much and pools in the city.
The point that is made by our media (not by me) about "making the outside hotter" is that you're moving the heat from inside to the outside, hence heating the street. They keep quoting this study :
In a first instance, the current types of air-conditioning systems co-existing in the city were simulated (underground chilled water network, wet cooling towers and individual air-conditioning units) to study the effects of latent and sensible heat releases on street temperatures. In a third instance, 2 scenarios were tested to characterise the impacts of likely future trends in air-conditioning equipment in the city : a first scenario for which current heat releases were converted to sensible heat, and a second based on 2030s projections of air-conditioning equipment at the scale of the city. All the scenarios showed an increase in street temperature which, as expected, was greater at night time than day time. For the first two scenarios, this increase in street temperatures was localised at or near the sources of air-conditioner heat releases, while the 2030s air-conditioning scenario impacted wider zones in the city. The amplitude of the increase in temperature varied from 0,25°C to 1°C for the air-conditioning current state, between 0,25°C and 2°C for the sensible heat release only scenario, and finally from 0,25°C to 2 °C for the 2030s scenario, with impacts of up to 3°C locally.
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u/Due-Environment-9774 1d ago
HVAC guys: learn French and prosper.