Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
132 words
In an absorption-desorption process for providing refrigeration in a cooling mode, and optionally heat in a heating mode, wherein ammonia is alternatively absorbed and desorbed from an absorbent in an absorber and generator respectively, and liquid ammonia is expanded through an expansion valve into an evaporator, the improvement comprising, (a) absorbing said ammonia in a pumpable low ammoniate complex of ammonia and ammonium chloride in about equimolar amounts, (b) enriching said low ammoniate with ammonia until said low ammoniate is converted to a high ammoniate complex of ammonium chloride and ammonia in the molar ratio of about 3 NH 3 :1 NH 4 Cl, (c) desorbing said high ammoniate so as to evaporate about 2 moles of ammonia per mole of NH 4 Cl, and, (d) returning low ammoniate to said absorber.
Claim 2
Dependent Claim
132 words
In an absorption-desorption process for providing refrigeration in a cooling mode, and optionally heat in a heating mode, wherein ammonia is alternatively absorbed and desorbed from an absorbent in an absorber and generator respectively, and liquid ammonia is expanded through an expansion valve into an evaporator, the improvement comprising, (a) absorbing said ammonia in a pumpable low ammoniate complex of ammonia and ammonium chloride in about equimolar amounts, (b) enriching said low ammoniate with ammonia until said low ammoniate is converted to a high ammoniate complex of ammonium chloride and ammonia in the molar ratio of about 3 NH 3 :1 NH 4 Cl, (c) desorbing said high ammoniate so as to evaporate about 2 moles of ammonia per mole of NH 4 Cl, and, (d) returning low ammoniate to said absorber.
Claim 3
Dependent Claim
35 words
The process of claim 1 wherein desorbing said high ammoniate in said generator is effected by heat exchange with a heat source at a temperature in the range from 65° C. to below 100° C.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein said heat source is geothermal, waste or solar heat.
Claim 5
Dependent Claim
24 words
The process of claim 2 wherein absorbing said ammonia in said low ammoniate is effected prior to introducing said low ammoniate into said absorber.
Claim 6
Dependent Claim
27 words
The process of claim 2 in said cooling mode, comprising the additional step of heat exchanging high ammoniate from said absorber against low ammoniate from said generator.
Claim 7
Dependent Claim
33 words
The process of claim 2 in said heating mode, comprising the additional step of heat exchanging ammonia vapors from said evaporator against liquid ammonia prior to it being expanded in said expansion valve.
Claim 8
Dependent Claim
22 words
The process of claim 2 wherein the coefficient of performance is in the range from about 90% to about 95% of theoretical.
Claim 9
Dependent Claim
24 words
The process of claim 3 wherein said heat source is at a temperature in the range from 65° C. to below about 90° C.
Claim 10
Dependent Claim
60 words
A working liquid adapted for use in an absorption-desorption process providing refrigeration, and optionally heating, said working liquid consisting essentially of a pumpable liquid ammoniate complex of ammonia chemically combined with ammonium chloride to form ammoniated ammonium chloride in continuously varying ratios in the range from about equimolar amounts, to about 3 moles of ammonia per mole of ammonium chloride.
Claim 11
Dependent Claim
60 words
A working liquid adapted for use in an absorption-desorption process providing refrigeration, and optionally heating, said working liquid consisting essentially of a pumpable liquid ammoniate complex of ammonia chemically combined with ammonium chloride to form ammoniated ammonium chloride in continuously varying ratios in the range from about equimolar amounts, to about 3 moles of ammonia per mole of ammonium chloride.