A study on Paris' future air condition use during a 9-day heatwave like the one in 2003, found:
if only all public buildings are running AC, ie not even the homes,
the outside air temperature🌡️increases by a lethal 3.6C
due to AC's warm air released into the streets.
While 10% more parks and proper insulation (and mandating an AC-cooled temperature of 26C) mean a temperature drop by 4C.
"Early adaptation to heat waves and future reduction of air-conditioning energy use in Paris",
#Viguié et al, 2020
https://iopscience.iop.org/article/10.1088/1748-9326/ab6a24
Makes a lot of sense to cull cars from Paris' streets like mayor #Hidalgo does it, freeing up former parking space for trees and future "towel parks".
The 9 day #heatwave in August 2003 had cost 5000 lives in #Paris alone.
#climate #adaptation #heat #UrbanHeat #ExtremeWeather #energy
@anlomedad I wonder what the effect would be if a % used ground source heat pumps and not air source heat pumps? They could mandate all government buildings use ground source, and only air source where it is not feasible. Only if they need cooling.
virgin, not version 😁
@dean @anlomedad
The local visitor centre uses water sourced heat pumps from a lake.
My sister-in-law uses ground sourced heat pumps in granite rock. There are limits on proximity between such pumps.
We have an air sourced one, and it runs at 24C for cooling, 19C for heating. The house is built to the most recent standards of insulation.
@dean
Would like to know that too. I'm an utter version when it comes to knowing how either tech works in detail.