Non-condensable gases and water in a refrigeration installations are a serious problem. They reduce performance and operational reliability and increase energy consumption. The non-condensable gases usually enter the system due to poor commissioning, chemical reactions of the refrigerant due to high compressed gas temperatures, service or leaks to the cooling system.
With the non-condensable gases, also water can enter the ammonia system, but water can also enter the system due to moisture in supplied components or due to a too high water content in new refrigerant.
Non-condensable gases will mostly collect in the condenser. As a result, the condensing temperature will rise.
The consequences of a higher condensing pressure are:
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A lower cooling capacity
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A higher power consumption
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Wear to the compressor due to the higher compressed gas temperature
Water will usually be present dissolved in the NH3 and changes the thermodynamic properties of the refrigerant.
The effects of water are:
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Ammonia no longer behaves according to expected properties
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Decreases the evaporation pressure relative to the evaporation temperature
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Increases energy consumption
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Gives rise to sludge formation in the oil
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Contaminated oil gives a lot of extra wear to the compressor
Non-condensable gases and water must be removed from the system. Cool Products has a number of solutions for this, we are happy to advise you on the best solution for your system.
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