Beach in the morning, visit to the beach bar and nap in the rented house. It doesn’t sound bad. You leave the beach bar with your belly full and your soul intoxicated with the sweet feeling of carelessness that invades you when dessert arrives and you say “why wouldn’t I eat that three-scoop ice cream.”
But when going to the car, the harsh reality. The sun beats like never before. Touching anything inside the car is risking a trip to the hospital with a second-degree burn, and there doesn’t seem to be a way to lower the temperature inside. “But I put the parasol on”you will say. But… oh, friend. What if you have put it wrong? What if you have done everything backwards?
That is what the German experts from the ADAC defend, a kind of German RACE famous for its reliability studies but they put the focus on everything that revolves around our cars. And his last publication is a good example of this.
More “fresh”
The automobile club ADAC has published an article in which it explains what temperature a car reaches in the sun and what measures we can take to reduce the temperature we will find inside.
It must be taken into account that the temperature of the cabin in a car is not only important to avoid burns when touching the steering wheel or gear lever. According to the DGTdriving indoors that exceeds 30 degrees can have effects on our body similar to driving under the influence of alcohol.
Therefore, when we get to a car that is parked in the sun, it is important to try to lower the temperature as soon as possible. The best idea is to launch what went viral as “the japanese trick”: open the windows and fan the car with the door itself to move the air inside and try to get it out as soon as possible. If you turn on the air conditioning, you must play with it to throw it at the feet or the ceiling depending on whether or not we are driving and the windows are open or not.
But to make the task easier, it is very important to take precautions beforehand. One of them is, of course, the parasol. From the RACC they assure that using the sunshade can reduce the interior temperature of the vehicle by up to 11 degrees. We arrive at our destination, we grab the sunshade in the upper area and make sure that it covers the entire surface of the windshield, we close the car and we leave.
Sure?
What the ADAC experts say, this is not the best way to act. To do this, they have put five exactly identical Dacia Sandero in the sun and have looked for the best way to ensure that the temperature in the cabin is as low as possible.
In his study, the car that was unprotected reached an internal temperature of 53ºC (blessed 53ºC if we compare it with the temperatures that the interior of our car can reach in the sun in Spain) and the lowest temperature had been achieved by covering the car with a tarp that reflects the sun’s rays. Obviously, this option is the least practical due to the size of the tarp that must be moved in the trunk and the inconvenience of putting it on and taking it off. Of course, the 43ºC achieved inside made the difference.
The second least useful option was to put a white cloth over the car. In this case, the temperature reached was 50ºC.
And here comes the interesting thing because it is the option that we use the most. The experts tried putting the sunshade inside the car, under the windshield, and outside the car, over the windshield. And the result was that putting it on the windshield reduced the temperature by 4ºC compared to putting it under the glass. In fact, putting the sunshade over the windshield left the temperature at 45ºC, very close to the best option. On the contrary, installing the windshield in the traditional way left the interior temperature at 49ºC.
“Semi-garage” is Google’s translation of putting a tarp on the car to cover it
The truth is that it makes sense. When the sun acts directly on the glass of the car, it heats up and acts as a magnifying glass, so the temperature in the cabin rises even more. Besides, his own glass emits more heat inside when it is hot, which is why it is not entirely advisable to buy a car with a sunroof without a curtain if you live in especially hot climates. In this case, the heat from the glass is projected onto the heads of the passengers.
By placing the windshield inside we prevent the rays from directly hitting the glass and, therefore, its capacity to retain heat and raise the temperature further is lower. In that case, what we should do before leaving is to “grab” some ribbons from the parasol when closing the doors so that the parasol does not fly away.
Photo | Andrew Bone
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