Warm air and cold air work differently. Cold air is formed by pressurizing the compressor to liquefy the refrigerant and then vaporizing it to absorb a lot of heat in the air. When the cold air is turned on, the compressor pulley drives the compressor to work, which increases the engine load and consumes a certain amount of fuel.
Warm air comes from the heat generated when the engine is working: when the cooling system of the engine radiates heat to the engine, the radiated heat is sent into the car through the fan to form warm air; When the warm air is not used, the fan stops running, the hot air port is closed, and the heat emitted will be completely dissipated into the atmosphere.
Extended data:
Mistakes in the use of automobile warm air;
1. Turn on the heater after ignition.
Correct practice: When the water temperature indicator reaches the middle position or the blue indicator goes out, use the warm air again. It is suggested to turn on the external circulation first to exhaust the cold air in the car. After a few minutes, turn to internal circulation, so that warm air will blow in.
2. People are afraid of cold and keep warm air on for a long time.
Correct way: If you need to turn on the warm air for a long time, it is recommended to leave a certain ventilation gap on the window to ensure the air circulation in the car. Especially in the position above the head, the gap is slightly larger and safer.
3. There is fog in the car and you dare not turn on the warm air.
It is very cold in winter. In the morning and evening or in rainy and snowy weather, the temperature and humidity difference between the inside and outside of the car is large, resulting in fog on the windshield. To this end, many drivers will immediately turn off the warm air and open the window, and then turn on the warm air after the fog dissipates.
The correct way: riders can try to adjust the direction of warm air to blow against the windshield. Warm air will soon dry the moisture on the glass, and the fog will no longer condense as the temperature of the glass rises.
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