What effect does moisture have on a refrigeration system?

What effect does moisture have on a refrigeration system?

Moisture will cause acid to form in the system causing serious damage to the compressor and expansion valve parts. It also deteriorates the insulation of the motor windings in the compressor. In the more advanced stages, compressor motor burnout and repeated compressor motor burnout happens.

What effect does moisture have on a refrigeration system quizlet?

Moisture is teamed with refrigerant and the refrigeration system. Once acid is created within the refrigeration system. It can cause a burn out when the refrigerant is exposed to the compressor motor. Corrosion of metals and freeze up at the expansion valve.

What happens to moisture in a refrigeration system when a vacuum is pulled on it?

As air is pulled out of the system, the pressure in the system drops below the air pressure outside. At that pressure, the moisture readily changes into a vapor, which a pump removes. The deeper and more complete the vacuum, the more moisture is removed from the system.

What is the best method of leak checking?

The Bubble test is best illustrated by placing a punctured bicycle tube under water and marking where the bubbles come from or placing washing-up liquid around the joint of an active water/gas pipe and observing whether the liquid forms a froth. Both are reliable ways of detecting a low-pressure leak.

Why is evacuating a refrigeration system important?

The purpose of evacuating a refrigeration system is to: Remove non-condensable gases and moisture. Oxygen will chemically react with the refrigeration oil and deposits buildup in the discharge valve area, causing compressor motor burn outs.

What is the purpose of evacuating a refrigeration system?

What is the purpose for evacuating a refrigeration system? Evacuating a refrigeration system serves two primary objectives. It removes non-condensable material (air) and dehydrates (removes water vapor). Does evacuation actually pull liquid water out of the system?

Why is nitrogen used to purge the system before using the flushing solvent quizlet?

Before using a flushing agent, nitrogen purging is recommended to blow out any loose particulates. The less particulates in the lines increases the dissolving power of the flushing agents on the remaining contaminants.

How do you remove moisture from a refrigerant system?

Moisture can be removed from a refrigeration system by applying a vacuum. POEs hold moisture more tightly than mineral oil. But in the case of R-134a, the refrigerant effectively competes with the ester lubricant in partitioning the water (i.e., the water moves from the lubricant to the refrigerant).

What happens to moisture in a vacuum?

Water actually boils at a lower temperature if the pressure around it is lowered. In a vacuum chamber, the pressure can be extremely low. So low, in fact, that water can actually boil at room temperature. So, if you put some water in a high-vacuum chamber you will see it boil.

What is the most sensitive type of refrigerant leak detector?

The Inficon TEK-Mate is one of the most unique electrochemical sensors that can detect all types of refrigerants, including R22, R32, R507, CFCs, HFCs, and their blends. However, the unit’s sensor is highly sensitive and may pick up false readings from the environment.

What happens when moisture is present in a refrigeration system?

When moisture is present in a refrigeration system, it will react with the refrigerant and the oil to form? Which of the following represents the lowest vacuum? Nice work! You just studied 11 terms!

Where does the moisture go in an air conditioner?

But in the case of R-134a, the refrigerant effectively competes with the ester lubricant in partitioning the water (i.e., the water moves from the lubricant to the refrigerant). Approximately 50 percent to 60 percent of the moisture injected into an air conditioning system remains in the refrigerant.

How does a drier affect the equilibrium moisture content?

The inclusion of a drier in the refrigeration system reduces the equilibrium moisture content of both refrigerant and lubricant phase. Moisture is quickly and efficiently removed by the drier, which yields dramatic drying (pulldown) rates.

How does moisture affect the performance of a lubricant?

Several important properties of esters affect their performance as lubricants. These include lubricity, miscibility, viscosity, solubility, and moisture content. Hygroscopicity is a term used to describe a lubricant’s and/or refrigerant’s affinity for moisture.