Patent ID: 9134056
Filing Date: 2015-09-15
Classification: F24F,F25B,Y02A,Y02B

Abstract:
1. An air-cooled absorption refrigerating system comprising: a generator in heat exchange relationship with a stream of heat transfer fluid or gas, a separator adapted to separate a stream from said generator into a weak refrigerant solution stream and a main refrigerant vapor stream, an air-cooled condenser to condense said main refrigerant vapor stream, an expansion valve to reduce the pressure of a condensed refrigerant stream from said air-cooled condenser, an evaporator to form an evaporated refrigerant stream from a stream from said expansion valve and to cool a surrounding material, a heat exchanger to exchange heat between said weak refrigerant solution stream and a high-pressure rich refrigerant solution stream, a mixer to produce a mixed stream from said evaporated refrigerant stream from said evaporator and from said weak refrigerant solution stream from said heat exchanger, an air-cooled absorber to reconstitute said mixed stream, and a pump to produce said high-pressure rich refrigerant solution stream from the reconstituted mixed stream from said air-cooled absorber, wherein said heat exchanger is split into a first and a second heat exchange stage; wherein i) the first heat exchange stage exchanges heat between said weak refrigerant solution stream and a stream of high-pressure rich refrigerant solution from said second heat exchanger stare; and ii) the second heat exchange stage exchanges heat between said mixed stream from said mixer and said high-pressure rich refrigerant solution stream from said pump, wherein said air-cooled absorber is adapted to reconstitute said mixed stream obtained from said second heat exchanger stare; and wherein said high-pressure rich refrigerant solution stream from said first heat exchange stage is adapted to be introduced into said generator.