Refrigeration

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There are good reasons for purging air from your refrigeration system, operating efficiency being the main one; increased equipment lifespan is another. It’s important, however, that correct purging procedures are used.

Many service technicians often become confused when the liquid line becomes restricted in the refrigeration system. This is because the symptoms often look like an undercharge of refrigerant. This article covers a refrigeration system with a restricted liquid line after the receiver using R-134a as the refrigerant. The refrigeration system is a low temperature freezer with a receiver and a TXV.

There are four pieces to the refrigerant system diagnostic puzzle: suction pressure; high-side pressure; superheat; and subcooling. This article talks about subcooling.

Troubleshooting modern refrigeration and/or air conditioning systems requires a thorough knowledge of the refrigeration system and its functions.

The compressor’s discharge temperature can tell the service technician what is going on inside a refrigeration or air conditioning system.

One of the main functions of the condenser is to condense the refrigerant sent to it from the compressor, but desuperheating and subcooling are other important functions.

How does it work?

Tiny tubes are prone to big blockages.

Technicians and engineers can benefit from using these shortcuts for estimating and solving operational problems.

Low-pressure control to maintain box temperature on commercial medium-temperature applications has been a common practice for many years.