How high is the temperature inside the car in summer?

The weather is getting hotter and hotter, and the temperature inside the car is particularly high in summer, because the tragedies caused by this high temperature are endless.

On June 20 15, a 4-year-old boy in Hunan was locked in his car and died. When he found it, his window was covered with handprints.

On July 20 15, a 3-year-old girl from Shandong was left in the car 10 hour and died unfortunately. Her body is dehydrated, as if it had been steamed.

There are many similar things. High temperature is an important cause of tragedy. So how high can the temperature inside the car be in summer? What would happen if I stayed in a car without air conditioning? Let's make an actual measurement.

The outdoor temperature is 33℃, which is not the hottest time. The air conditioner in the car is very comfortable, and the initial temperature is 28.6℃. After turning off the air conditioner, the temperature in the car quickly rose to 38.6℃ about 12 minutes after the flameout, and the ice water in the dummy's hand began to melt, and many water droplets appeared on the bottle wall.

After 20 minutes, the temperature rose to 565438 0.6℃, and the ice water had melted by half. Due to the high temperature, the reading of the thermometer gradually became blurred.

After 35 minutes, the thermometer failed and should exceed 60℃.

After the thermometer cooled, the highest temperature recorded was 63.8℃. In other words, the temperature inside the car increased by 35.2℃ in 35 minutes. So, what will happen if the child is locked in the car by mistake? How long can he persist before he can be found and rescued?

Locked me in the car, his pulse is 92 times per minute, high pressure 13 1 low pressure 72, belonging to normal human beings.

As soon as the car door was closed, the temperature quickly began to rise and the cushion was a little hot. 5 minutes, the temperature inside the car is 37℃.

15 minutes later, the temperature inside the car is 50℃. At this time, my liver fainted and I was sultry. The car is like a stove, and some of it won't hold. I have to take a deep breath to calm myself down.

In 20 minutes, the thermometer and camera in the car were turned off, and I almost collapsed. After measurement, my pulse has also risen to 12 1 beat/minute, blood pressure index 134, and the depression is 78, which will soon exceed the maximum value of normal blood pressure. ?

By half an hour, the sweat had decreased and I felt heatstroke. After 35 minutes, the temperature inside the car was 63℃. I completely collapsed, dizzy and uncomfortable, and gave up the experiment. At this time, the test pulse dropped from the previous 12 1 times/min to 1 13 times/min; Blood pressure reached 172, low pressure 82.

Fei Min, an attending physician in the emergency department of Zhejiang Provincial People's Hospital, said that the rising pulse and rapid heartbeat are normal metabolic reactions. When the metabolic limit is exceeded to a certain extent, blood pressure will increase irritably, which is a very bad reaction. In addition, I sweated a lot in the test first, which is the performance of heat dissipation, but later the amount of perspiration decreased, indicating that the thermoregulation center has been disturbed and the heat in the body cannot be discharged through sweat. If the situation is serious, it will lead to heatstroke. If it is a child, it is more dangerous.

Therefore, once the child is locked in the car by mistake, once he is nervous and crying, the time he can persist may be less than 25 minutes. If the child locked in the car can't be found for a long time, the final outcome will be like this egg. ?

Some people think that the child is in the car, so just leave a gap to ventilate the window. We tested it and left a gap of about 4 cm between the front and rear windows. Soon, the temperature inside the car rose to 32℃, close to the outdoor temperature. After 20 minutes, the temperature inside the car reached 50℃. After about 30 minutes, the temperature reached 53℃, and then the thermometer failed.

According to the experiment, although there is a gap in the window, the heating rate in the car is basically the same as that when the window is closed, and the temperature in the car has not decreased.