It is most appropriate to adjust the temperature of warm air between 20 and 25 degrees as much as possible. 1, if the temperature of warm air exceeds 28 degrees, people will feel hot and dry; And below 14 degrees, people will feel cold; 2. Therefore, the temperature inside the car should be adjusted as much as possible between 20 and 25 degrees; 3. At ordinary times, the temperature difference between the inside and outside of the temperature-controlled carriage should be kept within 10 degree as far as possible to prevent the cold from being caused by the low temperature after going out. The warm wind has been on for a long time, and many people usually feel breathless and will die soon. Because the car itself is in a closed space, if there are many people in the car and continue to exchange heat from each other's breathing, the air will feel stuffy. In this case, the owner can open a small slit in the four windows to discharge some dirty air in the car, which will effectively relieve the chest tightness after turning on the air conditioner and warm air. In addition, when the air conditioner is turned on, external circulation is often used to ensure that fresh air from the outside is continuously input into the car.
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