Car air conditioning looks simple, but not everyone knows the correct way to turn it on. Moreover, it can be fatal if used incorrectly.
When a car is parked and idling, a large amount of carbon monoxide will be produced due to insufficient combustion of gasoline, and this carbon monoxide will continue to accumulate in the engine compartment. And when the car is parked, carbon monoxide is difficult to diffuse. As the concentration of carbon monoxide increases, it will enter the car through the air conditioning system, causing poisoning of the people in the car.
What I want to say in particular is that when the car is parked and idling, carbon monoxide will enter the car whether it is the external circulation or the internal circulation. Do not think that you can sleep comfortably in the car by turning on the internal circulation. Carbon monoxide is colorless and odorless, and it is no exaggeration to say that it kills people invisible.
When the air conditioner is first turned on, the internal circulation is directly used
Under the scorching sun, every time we open the car door, a heat wave hits our faces. What we hope most at this time is to lower the temperature inside the car as soon as possible. Many drivers believe that the most efficient way to cool down is to open windows for ventilation and then turn on internal circulation cooling. Just like turning on the air conditioner at home but not opening the windows, it gets cooler faster.
In fact, even after opening the windows for ventilation, the temperature inside the car is still much higher than the temperature outside the car. The correct operation at this time should be to open the windows for ventilation first, then close the windows and turn on the external circulation and air conditioning. Letting the hot air in the car circulate out as quickly as possible is the first thing to do when you first get in the car. So what should be done at this time is to open external circulation.
Open the internal circulation to the bottom
Many car owners want to isolate the car exhaust outside the car and prevent the hot air from outside the car from entering. So I opened the inner loop to the end. However, long-term circulation will also make the air in the car more polluted and reduce the oxygen content in the car. It can cause dizziness, nausea, chest tightness, etc. to drivers, which not only affects health but also endangers driving safety. The reason why many car owners feel tired during long-distance driving is largely caused by the internal circulation being turned to the end.
So the correct operation is to open the external circulation in a timely manner after the temperature inside the car drops. Let fresh oxygen come in. Of course, this also depends on the road conditions. On roads with heavy exhaust gas, just turn on the internal circulation. On roads with fresh air, turn on external circulation for ventilation.
Never turn off the air conditioner
Many drivers have no idea to turn off the air conditioner. They keep the air conditioner on all the time and turn off the engine immediately after getting off the car. In fact, this is the main reason for the peculiar smell and sour smell of car air conditioners.
When the car air conditioner is cooling, the air duct of the air conditioner will become wet. Plus the engine bay itself is stuffy. If the flame is turned off directly, the moisture in the air duct will not have time to dry out, which will easily breed mold and produce odor.
After the air conditioner at home is turned off, it will dehumidify itself for a few minutes before turning off. The car does not have its own dehumidification function, which requires us to turn off the AC a few minutes in advance before arriving at the destination, and it is best to increase the air volume. Let the air duct dry as quickly as possible. This is effective in removing mold and odors from air conditioning ducts.
Long-term low air volume
Some drivers think that the air volume will consume more fuel, so they keep the air conditioner at low air volume for a long time. In fact, the air volume only depends on the power of the blower. The power of the blower is negligible compared with the compressor. Therefore, the air volume has almost nothing to do with fuel consumption.
There are also some people who keep air conditioners with low air volume for a long time because they are afraid that high air volume will cause rheumatism or neck and shoulder pain and other diseases. However, after long-term use, a lot of impurities and dust will accumulate in the air duct of the air conditioner. Low air volume cannot blow out these dirty things, so we have to breathe air "filtered" by these dirty things every day.
Therefore, when there is no one in the car, you can occasionally turn the air conditioner to the maximum air volume and keep it for a few minutes, which can effectively clean the dust and foreign objects in the air duct. It is very important to keep the air in your car fresh.
The air outlet can be adjusted at will.
Many car owners do not pay attention to the direction of the air outlet when using the air conditioner. This is not conducive to the optimal effect of the air conditioner. The best option is to blow cold air upwards and hot air downwards. In terms of wind direction, it is best to choose a blower in summer. Whether you blow on the windshield or on your feet, the cooling effect will be greatly reduced.
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