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In refrigeration systems wherein the refrigerant compressor is driven by a prime mover powered by combustion of a fluid fuel, a notable saving in fuel consumption is achieved by utilizing waste heat in the hot exhaust gases from the prime mover in an ammonia absorption refrigeration unit to produce

In refrigeration systems wherein the refrigerant compressor is driven by a prime mover powered by combustion of a fluid fuel, a notable saving in fuel consumption is achieved by utilizing waste heat in the hot exhaust gases from the prime mover in an ammonia absorption refrigeration unit to produce refrigeration in the form of liquid ammonia. Subcooled liquid ammonia is used to subcool the compressed and condensed refrigerant prior to its expansion and evaporation to produce saleable refrigeration. This compound refrigeration system is economically attractive for producing large tonnage refrigeration particularly when a combustion turbine coupled to a centrifugal compressor is used.

대표청구항 ▼

An improved refrigeration system comprising a refrigerant vapor compressor driven by a prime mover powered by the combustion of a fluid fuel, a condenser connected to said compressor to condense the hot compressed refrigerant vapor, a heat exchanger connected to receive the condensed refrigerant and

An improved refrigeration system comprising a refrigerant vapor compressor driven by a prime mover powered by the combustion of a fluid fuel, a condenser connected to said compressor to condense the hot compressed refrigerant vapor, a heat exchanger connected to receive the condensed refrigerant and to effect subcooling thereof, a pressure-reducing valve connected for the expansion of the subcooled refrigerant and for the discharge of the expanded refrigerant into an evaporator equipped with heat transfer surface for the recovery of refrigeration from said evaporator by a fluid passed in contact with said heat transfer surface, said evaporator being connected to pass refrigerant vapor therefrom back to said compressor, and an ammonia absorption refrigeration unit connected to utilize waste heat of the hot exhaust gases from said prime mover and further connected to pass liquid ammonia through an ammonia subcooler, said subcooler being connected for the flow of subcooled liquid ammonia through a pressure-reducing valve to said heat exchanger to effect said subcooling of said condensed refrigerant by evaporation of said liquid ammonia, said heat exchanger being connected for the return of ammonia vapor through said subcooler to said absorption refrigeration unit.