When driving during a bitter cold winter, the air coming inside is constantly warm and comfy. How does the car warm up the air so much and so rapidly?
In: Engineering
The engine creates a lot of heat, that heat is managed by the cooling system (radiator, water pump, thermostat, and hoses). The hot coolant is piped into a small box (hvac case) in the car where the heater core (small radiator) is housed. A fan blows air across the heater core, the air is then directed to the vents (dash, floor, defrost).
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