Sunday, October 2, 2022

Climate: what if we painted all the roofs of cars white?

It is already known that painting the roof of your house white can considerably reduce the effects of heat at home and, therefore, consume less energy. The same practice could be adapted to the automotive sector. If all cars had a roof repainted in white, this would allow motorists to release less CO2 into the air, but also to save money.

In his op-ed published this summer in The world, Raphaël Ménard, the president of the architectural agency AREP (for Architecture Research Engagement Post-carbon), subsidiary of the SNCF, recommends that in the long term the roof of the cars be systematically painted in white. This solution is based on the albedo phenomenon, ie the ability of a surface to reflect the sun’s rays according to its color. The principle is already used in housing, via the “cool roofing” notably.

This adaptation for the automotive sector is in fact based on a proposal from the Intergovernmental Panel on Climate Change (IPCC).

This modification could be imposed during a technical inspection, for example. According to Raphaël Ménard, in France alone, painting the entire car fleet white could save up to 500 million liters of gasoline per year, i.e. nearly a billion euros in savings. purchasing power. Above all, this would correspond to the equivalent of one million tonnes less CO2 released into the air, ie nearly 1% of emissions linked to road transport. And if this proves effective for cars, it also applies to trucks, buses or even trains.

It should be noted that the same technique could be adopted for certain infrastructures, in particular the floors, in order to heat less.

(ETX Daily Up)

Nation World News Desk
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