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
A car’s engine produces a shitload of heat. Something like 80% of the fuel’s energy directly becomes heat. All of that heat must be managed, by venting into the air. Heat exchangers have engine coolant pumped through them, and they have fans blowing over them. One such exchanger has air pumped past it before the air is blown into the cabin. So, it’s really just a heat exchanger with engine coolant that the air blows past.
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