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Q: What is the approximate Boiling pressure of refrigerant oil in the system?
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Does refrigerant enter the compressor as a low temperature low pressure gas?

Yes. The basic components of the refrigeration system are the refrigerant, compressor, condenser and receiver, expansion device and the evaporator. One cycle: Refrigerant travels to Compressor (A) to Condenser (B) to Expansion device (C) to evaporator (D). The refrigerant gas at low pressure and temperature is drawn into the compressor. The gas is compressed to a higher pressure, which causes an increase in the temperature. The refrigerant gas at a high pressure and temperature passes to the condenser (point B), where it is cooled (the refrigerant gives up its latent heat) and then condenses to a liquid. The high pressure, low temperature liquid is collected in the receiver. The high pressure liquid is routed through an expansion valve (point C), where it undergoes an abrupt reduction in pressure. That pressure reduction causes part of the liquid to immediately vaporize or flash. The vapor and remaining liquid are cooled to the saturation temperature (boiling point) of the liquid at the reduced pressure. At this point most of the refrigerant is a liquid. The boiling point of the liquid is low, due to the low pressure. When the liquid refrigerant enters the evaporator (point D), it absorbs heat from the process and boils. The refrigerant gas is now at low pressure and temperature, and enters the suction side of the compressor, completing the cycle.


Is refrigerant leaving a compressor in a cars air conditioning system high pressure vapor high pressure liquid or low pressure vapor?

high pressure vapor


Would the boiling point of water be higher or lower on a mountain peakhow would the boiling point be affected in a pressurized system?

The higher the pressure being exerted on the water, the lower the boiling point becomes. Yes the boiling point is affected in a pressurized system. If you put water in a sealed container and kept raising the pressure it will eventually reach it's boiling point without the need of adding heat.


Where can I get a chart that tells you about freon gas pressure.?

Freon is probably the most misused term out there right now. When you say freon, you are referring to refrigerant. There are many different types of refrigerant. There is R-12 (Dichlorodiflouromethane), R-22, R-134A, etc... Each different refrigerant has different pressures at different temperatures and such. The best thing to do is determine which refrigerant your system is using, and then acquire a pressure/temperature chart for it, which can probably be found online. I think the best thing to do after determining which refrigerant your system uses is to Google search for a P/T chart.


Why you prefer to connect tubes to low pressure connection at car air conditioning system compare to high pressure connection in air cond?

It is called high pressure for a good reason. The high pressure side can and will pump the refrigerant back into the can of refrigerant and explode in your hands. One more reason to let the professionals work on the air conditioning in your vehicle.

Related questions

What determines the pressure on the low pressure side of a refrigeration system?

the boiling point of refrigerant in a refrigeration or air conditioning system determines the pressure of the low side of the system


What is the difference between azeotropic refrigerant and zeotropic refrigerant?

Azotropic will only have one boiling or condensing point for each system pressure negligible fractionation or temperature glide will occur Zeotropic will have a range of boiling and condensing points for each system pressure noticeable fractionationand glide will occur.


How is the refrigerant cylinder pressure kept above the system pressure when a system is being charged with vapor from the cylinder?

Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side


How is the refrigerant cylinder pressure kept above the system pressure when a system is being charged with the vapor from a cylinder?

Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side


How is the refrigerant cylinder pressure kept above the system pressure when a system is being charged with vapor from a cylinder?

Add refrigerant vapor on the low side of the system ,the compressor raises the pressure of the refrigerant on the high side of the system and lowers the pressure on the low side


What is the difference between azeotropic and near-azeotropic refrigerant blends?

Azotropic will only have one boiling or condensing point for each system pressure negligible fractionation or temperature glide will occur Zeotropic will have a range of boiling and condensing points for each system pressure noticeable fractionationand glide will occur.


Why is a car cooling system usually pressurised?

Actually, it always is when operational. The pressure is what moves the refrigerant or coolant (depending on whether you're referring to the air conditioning or the engine cooling system) through the system.The pressure raises the boiling point of the coolant.


What does AC compressor do?

Cycles refrigerant through the system and changes the state of the refrigerant from a low pressure vapor to a high pressure vapor.


When charging a system with vapor refrigerant from a refrigerant cylinder the cylinder will become?

Lighter, as the refrigerant is boiled off, and colder, as it has absorbed heat, and has a lesser pressure to reflect the current temperature / pressure relationship for the type of refrigerant


Does refrigerant enter the compressor as a low temperature low pressure gas?

Yes. The basic components of the refrigeration system are the refrigerant, compressor, condenser and receiver, expansion device and the evaporator. One cycle: Refrigerant travels to Compressor (A) to Condenser (B) to Expansion device (C) to evaporator (D). The refrigerant gas at low pressure and temperature is drawn into the compressor. The gas is compressed to a higher pressure, which causes an increase in the temperature. The refrigerant gas at a high pressure and temperature passes to the condenser (point B), where it is cooled (the refrigerant gives up its latent heat) and then condenses to a liquid. The high pressure, low temperature liquid is collected in the receiver. The high pressure liquid is routed through an expansion valve (point C), where it undergoes an abrupt reduction in pressure. That pressure reduction causes part of the liquid to immediately vaporize or flash. The vapor and remaining liquid are cooled to the saturation temperature (boiling point) of the liquid at the reduced pressure. At this point most of the refrigerant is a liquid. The boiling point of the liquid is low, due to the low pressure. When the liquid refrigerant enters the evaporator (point D), it absorbs heat from the process and boils. The refrigerant gas is now at low pressure and temperature, and enters the suction side of the compressor, completing the cycle.


When charging a system with vapor refrigerant from a cylinder the cylinder will become?

Lighter, as the refrigerant is boiled off, and colder, as it has absorbed heat, and has a lesser pressure to reflect the current temperature / pressure relationship for the type of refrigerant


When you turn the blower motor select nob to the left it does not engage the AC system?

Check the refrigerant pressure. There is a sensor that detects the pressure of the refrigerant. If the pressure is not high enough the compressor will never engage.