The car can reach more than 50 degrees in half an hour with a high temperature! How to reduce the temperature inside the car as fast as possible? Really revealed

When you start driving out in summer, if you park your car outside, the temperature inside the car is very scary. When you return to the car, the first thing you must do is to lower the temperature inside the car before you can get into a seat. As for how to quickly reduce the temperature, professional testing will tell you the fastest way to reduce the temperature inside the car.

High temperature sunshine: You can reach more than 50 degrees in half an hour

The recent temperature is 37 or 38 degrees, and going out is really a big test. It seems to be a little better to drive out, but if you can't find an indoor parking lot, you must park the outdoor parking lot. When you return and start driving, you must pay special attention. After the sun is exposed to the inside, the temperature inside the car will quickly rise.

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In the past, a parent forgot to take the child off the car and died of heat. There are also a few tests that indicate the high-temperature fried eggs in the car; how hot is the temperature in the car in summer? Many years ago, Zhu Bohan, the current attending physician of the Bed Department of the General Hospital of the Third Army, also had a self-test. At that time, he conducted a "summer temperature rise speed" experiment at the Third General Parking Site. The temperature on the weather website was 35 degrees that day, because it was stopped at the test site. On the concrete floor of the car, the solar radiation heat can be reflected. The current temperature is 39.7 degrees. The initial temperature in the car is also 39.7 degrees. After the temperature meter is installed and the car is opened, the temperature in the car has reached 53.3 degrees after half an hour.

When you have no choice but to park outdoor parking, you should carefully choose the parking position. When parking, you should first roughly observe the sun position to avoid direct exposure of the front wind glass with the largest area. Then use a sunshade and close the sunroof to prevent the rapid temperature increase problem of short-term parking. After the car starts up again, the temperature reduction time can be shortened.

Therefore, when you want to re-enter the car, you must pay attention to reducing the temperature first. There are many ways to reduce the temperature, but which one is the fastest and most effective? According to the report of the life website "maidonanews.jp", according to the official X account of the Japan Automobile Alliance (JAF) (@jaf_jp), 5 methods are actually conducted to reduce the temperature as fast as possible by "cooling + driving".

Practice 5 internal temperature drop methods

This test was conducted around June 2016 at a parking lot in Toda City, Saitama Prefecture. The test was prepared for the same car model of 5 trucks. When the temperature inside the car rose to 55℃, the five testers each used different methods to reduce the temperature.

【Method without cooling】

1. Repeat the door → drop to 47.5℃

2. Cold spray → drop to 50.1℃

Note: Cold spray contains combustible gases, so be careful when using it.

【Method of using cold air】

3. Cooling (external circulation ring) → it dropped to 29.5℃

4. Cooling (internal circulation ring) → it dropped to 27.5℃

5. Cooling + driving → it dropped to 28.0℃

Note:

. External circulation: suck the outer air of the car, and then pass it into the car through a cooler (or warmer) ; at the same time, discharge the heated air in the car outward.

. Internal circulation: Repeat the treated air in the car, and then cycle after cooling off (or heating) the air; almost no new air in the outside world is inhaled.

The most efficient temperature reduction step "Cold + Driving" fastest temperature reduction

The results of "Cold + Driving" can clearly reduce the temperature in the car in the shortest time. JAF pointed out that this approach not only saves fuel and reduces waste emissions, but also has benefits for the environment.

However, if the temperature inside the car is compared after 10 minutes, the temperature of the internal circulation cooling alone is the lowest. Therefore, the most efficient way to reduce the temperature is to open the car windows first, set the cooling to "external gas inlet", and discharge the heat while opening the car. After the heat is discharged, close the window and switch to the "Inner Circulation" mode to accelerate the temperature reduction.

It should also be noted that even if the temperature inside the car drops, the surface of the steering wheel, the center console, the children's safety seat, and the safety belt metal buckle may still remain high. Be careful to touch it, and be especially careful not to hurt the child.

Will plasticizer be dissolved on the bottle of water?

In addition, there is a common problem. Generally, we are often told not to place bottled water in high temperature carries to avoid dissolving plasticizers. However, based on the results of common PET material packaging water tests released by the Food and Drug Administration, the plasticizer DEHP was not detected. We should pay attention to the problem of the breeding of bacteria in bottles. Because usually when we drink bottled water, we usually use our mouths to bottle, which can easily allow bacteria in our mouths to stay in the bottle mouth or mix them into the packaging water. If we don’t finish drinking and keep them in the high-temperature car for a period of time, the bacteria in the packaging water will easily proliferate in large quantities. Therefore, it is still recommended that the packaging water be hidden in the dry and cool place to avoid direct sunlight and exposure to high temperature environments.