May
2018

The Do’s and Don’ts of Compressor Superheat

What You Don’t Know About Compressor Superheat

The ammonia refrigerant travels through different tubes in the to decrease the refrigerant temperature before going into the condenser. First it’s either too restricted and it isn’t letting refrigerant into the evaporator. Again, it’s just controlling the sum of refrigerant allowed into the evaporator. Thus, the refrigerant is currently heated above saturation for its existing pressure. When there isn’t enough refrigerant entering the evaporator, higher subcooling occurs.

Compressors are not meant to run unloaded for elongated periods. While compressors and evaporators have to be sized to coordinate with the load at the latest days of the calendar year, the system also needs to be configured for low condensing conditions to maximize energy efficiencies. They also pump a small amount of oil out of the compressor while running which must be returned to the compressor at the same rate of loss to maintain compressor lubrication. The more appropriately sized compressor permits the refrigeration system to attain improved efficiencies.

The appropriate quantity of compressor superheat will guarantee a cool running compressor and at the identical time ensure the correct density suction gases for good capacities. As soon as it is true lower superheat is likely to make the evaporator more efficient, we will need to be more concerned with compressor or overall superheat. The quantity of evaporator superheat that is necessary for some application will be different. High superheat might be the end result. System superheat denotes the superheat going into the suction of the compressor.