Even if it is 40 ° C, we can be cool without abusing air conditioning, which represents 10 % of global electrical consumption.
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This summer, your mission, if you accept it: do without air conditioning! Energivore, it represents 10 % of global electricity consumption, according to the International Energy Agency. Pollutant, it participates in global warming due to leaks or poor recycling of refrigerants, which are powerful greenhouse gases. Calorific, it is partly responsible for “urban overheating”, by itself increasing by 1 ° C to 1.5 ° C the temperature in town compared to that of the surrounding countryside – the total differential up to 8 ° C In the event of a heat wave.
Now, if we do nothing to limit global warming, by the end of the century, we could go to temperatures of 50 ° C, or even greater than 55 ° C. “Heat waves will double or triple frequency. It is therefore urgent to adapt our habits but also urban forms,” warns Charlotte Izard, climate and territory manager to the Action Climate Network.
Here are some solutions to act now in your house or apartment.
beginner level: have control of your air
1 – Preserve the interior temperature. For you who start, it is better by saying it: you have to close the shutters during the day as soon as the sun hits the window or do it before leaving for the morning. “The roller shutters are those who are most isolate, the air they contain serving as insulation,” explains Florence Clément, coordinator of consumer information at the Environment Agency and mastering the energy (Ademe). Also close the windows as soon as the outside temperature exceeds that of your accommodation. Take advantage of the night to ventilate, which allows you to cool the walls, the ceilings, the floors, which will keep the freshness. Tracking electrical devices: in case of heat, no question of cooking a chicken or working with the laptop on the knees.
If you have a floor, at night, you can make an effective air current called “fireplace effect” by opening a window at the top and another at the bottom. “This will create an ascending air movement more likely to hunt heat towards the outside of the attic,” continues Florence Clément. If you fear leaving a window open at the bottom overnight, seal a grid in front of the opening.
2 – Create natural cooling. Dry very damp cloth inside the rooms or moistened a terracotta jar that you will have watered in a bowl and place it in the place where the accommodation is sunny: by drying, laundry and terracotta Evaporated water, which creates natural air conditioning, recommends Julien file, director of the Quattrolibri consulting firm and author of Ecological Renaissance, 24 sites for the world of tomorrow (South Acts): “In India, the Beehive method Cooling, which consists in stacking terracotta pots in front of the houses, creates a temperature differential of more than 10 ° C between the outside and the interior. “
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