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Non-condensable gases and water in a refrigeration system are a serious problem. They reduce performance and reliability, and increase energy consumption.
Non-condensable gases and water in ammonia systems
Non-condensable gases usually enter the refrigeration system due to poor commissioning, decomposition of the refrigerant at high discharge temperatures, maintenance work, or leaks. Systems operating under vacuum are particularly sensitive to the ingress of these gases.
In addition to non-condensable gases, water can also be present in an ammonia system. This water may originate from moisture in delivered components or from a high water content in new refrigerant.
Effects of non-condensable gases
- They mainly accumulate in the condenser.
- Condensation temperature increases, which leads to:
- Lower cooling capacity
- Higher energy consumption
- Increased compressor wear due to higher discharge temperatures
Effects of water in the system
- Alters the thermodynamic properties of ammonia
- Lowers the evaporation pressure relative to the evaporation temperature
- Increases energy consumption
- Promotes sludge formation in the oil, leading to additional compressor wear
Non-condensable gases and water must be removed from the system in time to ensure optimal performance and long service life of the installation.
Cool Products Solutions
Cool Products offers various solutions for removing non-condensable gases and water from ammonia systems. We are happy to advise you on the best approach for your installation.
CPAW Calc
Would you like to know how much you can save? Use the Cool Products calculation program CPAW Calc to calculate the effect of air and water in ammonia refrigeration systems. Visit this link to download the latest version of CPAW Calc .
Brochures
LDowload leaflet The high cost of air and water in NH3 systems