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This chilled water unit is a new ammonia chiller. This unit is also unique in that it has no compressor. Instead it uses the chemical properties of ammonia and heat from natural gas to condense the refrigerant which is ammonia.
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This chilled water unit is a new ammonia chiller. This unit is also unique in that it has no compressor. Instead it uses the chemical properties of ammonia and heat from natural gas to condense the refrigerant which is ammonia. A chiller provides chilled water to a chilled water loop. Cold water is circulated through a loop where it is direct into a coil in an air handler. Air is blown across a coil where a heat exchange process takes place. The air handler discharges cool conditioned air throughout a duct system. Chilled water systems are typically used in commercial air conditioning applications but there are some chilled water systems in residential applications.
Most chilled water air conditioning systems use compressors to compress the refrigerant so that it can be condensed in condenser coils. This systems uses natural gas and a heat exchanger to compress the refrigerant so that the condenser can condense the refrigerant in the system. The refrigeration process is the same it only uses a different means to compress the refrigerant. After the refrigerant is compressed it enters the condenser coils where heat is removed from the refrigerant. The refrigerant then goes to a metering device where it drops in pressure and temperature. It enters a chiller barrel where water flows. A heat exchange from the water to the refrigerant takes place and the water leaves the chiller barrel and is pumped towards the chilled water coil in the air handler.
