Will the trunk cool down when the car's air conditioning is on?
2 Answers
No, the trunk will not cool down when the car's air conditioning is on. Below is an introduction to the car's air conditioning system: Introduction: The car's air conditioning system consists of a compressor, condenser, throttle element, evaporator, fan, and necessary control components. Working principle: When the compressor operates, it sucks in low-temperature and low-pressure gaseous refrigerant from the evaporator. After compression, the temperature and pressure of the refrigerant increase, and it is sent to the condenser. Inside the condenser, the high-temperature and high-pressure gaseous refrigerant transfers heat to the outside air passing through the condenser, causing it to liquefy and turn into a liquid. When the liquid refrigerant flows through the throttle device, its temperature and pressure decrease, and it enters the evaporator.
As a veteran driver with over 20 years of experience, I've learned quite a few lessons. When the air conditioning is on, the cabin cools down quickly, but the trunk remains largely unaffected because I've noticed they're completely isolated with no connecting vents. The AC system is designed solely for cabin air circulation, with cold air blowing directly from the dashboard vents, while the trunk is an independent enclosed space where hot air accumulates and doesn't dissipate easily. One summer, I stored drinks in the trunk - after half an hour with the AC on, the cabin was cool but the trunk stayed hot, leaving all the sodas lukewarm. Some special car models might have rear AC vents that could slightly affect the trunk, but most regular vehicles don't. If you really need to keep the trunk cool, I recommend opening the lid for ventilation when parked or using a sunshade cover.
