Why does it get hot instantly when you turn off the air conditioner?

There are many reasons. If you are indoors, it may be that the insulation effect of your room is not very good, which leads to air convection and the temperature may change a little.

The geothermal energy of a room includes geothermal energy passing through the room envelope, solar radiation, heat load generated by equipment, heat load generated by people, etc.

Closing doors and windows will only reduce the heat exchange caused by air convection to a certain extent. More importantly, it has permeability.

But if the room is completely insulated and there is no heat source, the temperature will not change.

There are sensible heat and latent heat. It can only be said that in this ideal situation, the thermal insulation system of the room will not exchange heat with the outside world.

The first thing to ask is whether this system is absolutely closed. According to the law of conservation of energy, the temperature of the absolute locking system must be constant, but there is no such system in real life, and it will be more or less affected by the external field.

If you are in the car, there may be several reasons.

① When the air conditioner is turned off, in order to ensure the indoor air circulation of the driver, the air conditioning system automatically switches to the external circulation mode. When the vehicle is running, the heat absorbed by the radiator and exhaust system of the engine blows head-on, and enters the cab from the air conditioning distribution box, so it is normal to feel that there is still hot air in the air outlet after the air conditioning is turned off. ② There is a small warm air water tank in the middle of the instrument panel, which is separated from the air distribution pipe in the air-conditioning distribution box by a partition, so there will be heat dissipation and the air in the air-conditioning distribution box will be heated.

Therefore, there are always appropriate ways to solve this problem in different situations and in different ways.