We haven’t talked about cars in a while so it is high time to do so.

We haven’t owned a automobile in years after moving overseas, but I still like to talk about them as they were a giant area of my life growing up, older cars properly use a mechanical system, which operates on basic thermodynamics principles. The program consists of numerous components including a compressor, condenser, expansion valve, and evaporator. The compressor pumps gas from the evaporator to the condenser, where it releases heat and condenses into a high-pressure, high-temperature liquid. The liquid then flows through the Heating plus A/C expansion valve, where it rapidly expands and lowers its temperature. This cooled Heating plus A/C liquid refrigerant then enters the evaporator, where it absorbs heat from the lodge air and returns to the compressor as a low-pressure gas, starting the cycle anew. The lodge air is cooled and dehumidified as it passes over the evaporator fins, and then blows through the air conditioning system ducts into the passenger compartment. One of the main challenges of mechanical air conditioners in older cars is their refrigerant; Until the 1990s, most automotive air conditioners used chlorofluorocarbon (CFC) refrigerants, which have been found to have a significant impact on the ozone layer. The Montreal Protocol, an international treaty aimed at protecting the ozone layer, led to the phase-out of CFCs in most applications, including automotive air conditioning; Many older cars still use CFCs, and owners should be careful when having their air conditioners tested to ensure that the refrigerant is not released into the atmosphere.

furnace/heater