US 2012/0266618 A1 · AIR COOLED ABSORPTION COOLING SYSTEM OPERABLE BY LOW GRADE HEAT

Abstract

An air-cooled absorption refrigerating system and method is provided An evaporated refrigerant is mixed with a weak refrigerant stream Portions of the evaporated refrigerant are absorbed into the weak refrigerant stream via air-cooled absorber means to form a reconstituted solution which is pumped into heater means in heat exchange relationship with a hot weak refrigerant. The hot weak refrigerant stream is conducted therefrom Refrigerant is evaporated from the reconstituted solution via generator means in heat exchange relationship with a heat transfer fluid The generator means stream is separated into a hot weak refrigerant stream and a main refrigerant vapor stream The main refrigerant vapor stream is condensed via air-cooled condenser means The pressure of a condensed refrigerant vapor stream is reduced and conducted into evaporator means, where it is evaporated to form an evaporated refrigerant stream and conducted therefrom

Claims30

Dependent claims

An air-cooled absorption refrigerating system comprising:

generator means in heat exchange relationship with a stream of heat transfer fluid or gas, separator means adapted to separate a stream from said generator means into a weak refrigerant solution stream and a main refrigerant vapor stream, air-cooled condenser means to condense said refrigerant vapor stream, an expansion valve to reduce the pressure of a condensed refrigerant stream from said air-cooled condenser means, evaporator means to form said evaporated refrigerant stream from a stream from said expansion valve and to cool a surrounding material, a heat exchanger means to exchange heat between said weak refrigerant solution stream and a high-pressure rich refrigerant solution stream, mixer means to produce a mixed stream from a stream of evaporated refrigerant from said evaporator means and from a stream of weak solution from said heat exchanger means, air-cooled absorber means to reconstitute said mixed stream, and pump means to produce said high-pressure rich refrigerant solution stream from a stream from said air-cooled absorber means.

A method for cooling a refrigerated space comprising:

mixing a stream of evaporated refrigerant with a stream of weak refrigerant solution;
producing a reconstituted solution by absorbing portions of said evaporated refrigerant into said stream of weak refrigerant by means of air-cooled absorber means;
pumping said reconstituted solution into heater means being in heat exchange relationship with a stream of hot weak refrigerant solution and conducting said weak refrigerant solution therefrom for use in said mixing;
evaporating refrigerant from a stream of reconstituted solution from said heater means by means of generator means being in heat exchange relationship with a stream of heat transfer fluid or gas;
separating a stream from said generator means into said stream of hot weak refrigerant solution and a main refrigerant vapor stream;
condensing said main refrigerant vapor stream by means of air-cooled condenser means;
reducing the pressure of a stream of condensed refrigerant vapor from said air-cooled condenser means and conducting the same into evaporator means;
and
evaporating said condensed refrigerant in said evaporator means to form said stream of evaporated refrigerant and conducting said stream of evaporated refrigerant therefrom for use in said mixing.

6 more elements

Dependencies are inferred from the claim text.

Air cooled absorption cooling system operable by low grade heat

Life of this patent

Air cooled absorption cooling system operable by low grade heat

Life of this patent

Abstract

Claims30