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The rate of flow through the system will depend on the size of the unit, And the operating pressures will depend on the refrigerant being used and the desired evaporator temperature. The red dots inside the piping represent discharge vapor. The solid red color represents high pressure liquid refrigerant.
Most air cooled air conditioning and refrigeration systems are designed so that the refrigerant will condense at a temperature about 25 to 30 degrees above outside ambient air temperature. If the outside air temperature is 80 degrees, the system is designed so that the temperature of the refrigerant, right at the point where it first condenses, will be about 105 to 115 degrees.
So that the air will be very cold relative to the temperature of the discharge vapor, Which will allow the latent heat energy in the vapor to transfer over to that relatively cold air, And cause the refrigerant to condense. This transfer of heat from the vapor to the flowing air is what makes hot air blow out of your air conditioner's condensing unit. At this stage in the air conditioning circuit and cycle diagram, high pressure liquid refrigerant will flow down the liquid line, through a filter drier that is designed to prevent contaminants from flowing through the system, and on to the metering device. The metering device, component #3 on this air conditioning circuit and cycle diagram, is the dividing point between the high pressure and low pressure sides of the system, And is designed to maintain a specific rate of flow of refrigerant into the low side of the system. If the wrong capacity of metering device is used, or if there is a problem with the metering device, An incorrect quantity of refrigerant will flow into the evaporator. And that brings us to the evaporator, component #4 in the air conditioning circuit and cycle diagram. There will be relatively warm air flowing over the evaporator coil, lets say about 80 degrees. The air conditiong system is designed so that the refrigerant will evaporate in the evaporator at a temperature of about 40 degrees, so that it will be cold compared to the warm air flowing over it. The system is designed so that the heat in the warm air flowing over the evaporator will be absorbed by the cold evaporating refrigerant. This cools the air flowing over the evaporator, and is the reason cold air blows out of your air conditioner.

I hope this air conditioning circuit and cycle diagram has helped you understand air conditioning systems, and once again, feel to copy it and print it out. Return from Air Conditioning Circuit and Cycle Diagram to the Air Conditioning and Refrigeration Guide home page. For 1955 Trucks, specify early or late to our sales rep, since GM changed designs mid-year and we have different kits for each. This model specific Perfect Fit™ system allows you to retrofit an original, standard, heat-only 1947-Early 55 Chevy Pickup Truck with full air-conditioning. The 1947-Early 55 Chevy Pickup Truck Perfect Fit™ air conditioning system is designed specifically to bolt into your 1947-Early 55 Chevy Pickup Truck with minimum modification to your vehicle. Classic Auto Air's Perfect Fit™ model specific systems are not your typical, one-size-fits-all, low-quality, aftermarket air conditioning system.
The Perfect Fit™ 1947-55 Chevy Pickup Truck air conditioning system is engineered to actually fit a 1947-Early 55 Chevy Pickup Truck. Our standard Perfect Fit™ is the perfect solution for most of our customers, but we've helped many customers develop custom solutions, from hose placements, to smooth firewalls, to you-name-it, to create a personalized air conditioning solution that's just right for them. The system is controlled using the original heater control panel for all of the air diverter doors and air temperature changes.
Buy our Complete System and get your compressor and everything in the Evaporator, Condenser and Compressor Mount Kits, all at a discounted price. Use an electric fan for city or parade driving or when there's not enough space for a standard mechanical fan. Classic Auto Air's Perfect Fit 1947-55 Chevy Pickup Truck system works equally well for each of the covered model years, including 1947 Chevy Pickup Truck air conditioning, 1948 Chevy Pickup Truck air conditioning, 1949 Chevy Pickup Truck air conditioning, 1950 Chevy Pickup Truck air conditioning, 1951 Chevy Pickup Truck air conditioning, 1952 Chevy Pickup Truck air conditioning, 1953 Chevy Pickup Truck air conditioning, 1954 Chevy Pickup Truck air conditioning, and 1955 Chevy Pickup Truck air conditioning.
Aug 02, 2011 By John BurkeUsually, when weather and Syracuse end up in the same sentence, you're almost guaranteed to hear about the frigid temperatures, wind chill and the excessive amount of snow we receive each winter. We've set up a page with some important information on what to do when the high temperatures start to bring you down.

Where is located cabin air filter on a Chevrolet Lumina. Maintenance of a car differ from a vehicle to another.
To have access and to replace the cabin air filter on a Chevrolet Lumina follow the next instruction.
First time you need to place windshield wipers in upright position and after that open the hood.
Pull back weatherstrip from passenger side of cowl and remove screws from this side like in picture bellow. For more guidance feel free to ask about how to replace the air conditioning filter for Chevrolet Lumina. Find more information about where is located cabin air filter or air conditioning filter for Chevrolet. How to locate if you need to change cabin air filter, oil filter, fuel filter, pollen filter, dust filter or air filter on Chevrolet Lumina. Not all models of Chevrolet Lumina have cabin air filter installed but you can check under the passenger windshield wiper and you can find the place where the cabin air filter supposed to be. Remember to stay hydrated, utilize the shade and keep physical activity to a minimum during times of extreme heat.
Is necessary to replace this filter to protect you and your passenger from bad odors, some allergen, from pollen and is very important if somebody from your car is allergic to pollen, dust and other particle. Heat illness may cause you to feel tired, to have muscles that are weak, tired or cramping, and to have dizziness, nausea, vomiting or headache.

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