![]() Any time something boils, it is absorbing heat a pot of water only boils when it absorbs heat from a hot stove. The refrigerant in an A/C system cools the air by absorbing heat. Where water normally boils at 212 degrees Fahrenheit (and freezes at 32 degrees), a refrigerant like R-134a boils at 15 degrees below zero (and freezes at -154). A refrigerant is a liquid or a gas with a very low boiling point. That’s because “cold” isn’t really a thing coldness is just a lack of heat. If you want to make anything cooler, you need to remove heat from it. Condenser, 3, Thermal expansion valve or orifice tube, 4. #Ac coolant seriesThe blower fan then blows air across the heater core and through a series of ducts into the cabin.ġ. It does this by circulating coolant through a heater core located inside the car’s dashboard. The water pump circulates hot coolant to the heater core under the dash where it provides heat for inside the passenger compartment. The other function of the cooling system is to provide heat for the car’s cabin. ![]() The thermostat stops the flow of coolant on a cold engine to allow quicker warm ups, and then opens as needed to keep the engine’s temperature constant. Once the engine has reached a certain temperature, a thermostat opens to control the flow of coolant through the radiator. ![]() When you start your engine, a water pump circulates the coolant through the engine and radiator. Coolant is a 50/50 mixture of water and antifreeze. The cooling system uses coolant to do this. It does this by keeping the temperature at a constant so it runs more efficiently. The cooling system is used to keep the engine from overheating. That heat is regulated in order to avoid damaging the engine. When a vehicle’s engine is running, it generates a lot of heat. ![]()
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