Do you drive an internal or external cycle in winter? Scientific switching can quickly heat up and remove fog

#Search Topics June Creation Challenge# "The Rule of Warm Quilt" when I first got on the car: the internal circulation rises by 30% faster in 5 minutes

Turn on the internal circulation mode immediately after the vehicle starts, which is equivalent to "wrapping an electric blanket" in the car - blocking the entry of external cold air and allowing the warm air to circulate quickly in the enclosed space. Actual measurements show that this operation is 30% faster than the external circulation, and is especially suitable for severe cold environments of more than minus ten degrees Celsius in the north. But beware of "side effects": the water vapor exhaled by the human body will condense into fog on the front windshield. It is recommended to aim the air outlet at the glass simultaneously to prevent fog.

Key actions after temperature stability: External circulation defogging efficiency is 2 times higher

#Search Topics June Creation Challenge# "The Rule of Warm Quilt" when I first got on the car: the internal circulation rises by 30% faster in 5 minutes

Turn on the internal circulation mode immediately after the vehicle starts, which is equivalent to "wrapping an electric blanket" in the car - blocking the entry of external cold air and allowing the warm air to circulate quickly in the enclosed space. Actual measurements show that this operation is 30% faster than the external circulation, and is especially suitable for severe cold environments of more than minus ten degrees Celsius in the north. But beware of "side effects": the water vapor exhaled by the human body will condense into fog on the front windshield. It is recommended to aim the air outlet at the glass simultaneously to prevent fog.

Key actions after temperature stability: External circulation defogging efficiency is 2 times higher

When the temperature inside the car reaches the comfort zone, it must be switched to the external circulation. The dried and cold air introduced at this time can quickly absorb the water mist on the glass, and the defog removal efficiency is twice as high as internal circulation. More importantly, external circulation can avoid excessive carbon dioxide concentration in the car (the risk of excessive concentrations during long periods of circulation) and effectively prevent drivers from getting sleepy due to hypoxia. Pay attention to adjusting the air conditioner wind direction to the "front windshield + foot" mode, which can not only remove mist but also keep your feet warm.

Flexible switching of special sections: the internal loop does not exceed 15 minutes

In case of tunnels, smog sections or severe traffic jams, you can temporarily cut back into internal circulation to block exhaust pollution. However, a "15-minute safety line" needs to be set - the timeout will cause the window to fog repeatedly, forming a "can-stuffing effect". It is recommended to use intermittent window opening and ventilation, or turn on the AC key of the air conditioner to assist in dehumidification. Through this dynamic adjustment, air quality can be guaranteed and clear vision can be maintained.

The golden formula for using a car in winter: one quick, two quick, three flexible

Summarize the logic of scientific use: rapid heating and internal circulation (5 minutes as the boundary) → stable temperature and must be replaced with external circulation (anti-fog and anti-oxygen) → flexible re-cutting of polluted road sections (limited to 15 minutes). Mastering this method can not only enjoy the warm driving environment, but also avoid safety hazards caused by improper operation, making driving in winter more comfortable and safe.