0
Technicians with R-22 experience will need to become familiar with working with high and low side pressures that are much higher when using R-410A. A typical R-22 system operating normally with a head pressure of 260 psig at a 120-degree condensing temperature and a low side pressure of 76 psig at a 45-degree evaporator saturation temperature will find the equivalent pressures in a R-410A system to be much higher.
A normally operating R-410A system with the same condensing temperature of 120 degrees and a 45 degree evaporator saturation temperature will have a high side pressure of 418 psig and a low side pressure of 130 psig.
Although refrigerant 410A is a near-azeotrope and has a slight temperature glide, there is no need to correct for refrigerant dew point and bubble point differences. Superheat and sub cooling calculations can be calculated the same way we have always done with R-22 refrigerant. The only difference will be the higher pressure-temperature relationship when reading the temperature-pressure chart. The temperature glide for R-410A is only .3 degrees Fahrenheit and can be ignored and fractionation is not a concern.
Add your answer:
Earn +20 pts
What does high-side and low-side mean with respect to car AC's?
High side and low side refer to the pressure in the ac system. Ie The high side is the high pressure line and low side is the low pressure line.
Is suction pressure is high side or low side of refrigeration system?
Low side.
What part of the refrigeration system changes the high pressure side to the low pressure side?
The compressor changes the low pressure gas into a high pressure gas which then has the heat of compression removed in the condensor to turn it into a high pressure liquid.
Does adding freon go to high or low pressure side?
Always to the low pressure side. The low pressure side fitting is normally near the dryer ( large silver canister).
What is the correct pressure on the high side and low side on R22 at 95 degrees?
150 high 75 low
Is the suction line the high side?
No, the liquid (discharge) line is the high pressure side. The suction line is the low pressure side.
What color is the high side on a pressure gauge?
Red is the high side.. The low side is blue..
R22 low side pressure?
Low predsure very high
Why use low and high side access valves when recovering refrigerant?
Because it's the only way to recover it. You recover from the high pressure side, and charge it on the low pressure side.
In air conditioner units is the larger copper refrigerant pipe the low or high pressure side of the system?
it is the low pressure side
What is the high side and low side?
The high pressure side is the discharge side. It runs from the compressor outlet to the metering device inlet. The low pressure side is the vacuum side. It runs from the metering device outlet to the compressor inlet.
Why is High side pressure high Low side goes into vacuum?
its can be a restriction in liquide line
