초록 ▼

An absorption-type air conditioning process and system for an automobile or other vehicle is disclosed in which the sensible heat from the engine coolant is utilized to drive the generators. The invention, which employs water as the refrigerant and a lithium bromide solution as the absorbent, compri

An absorption-type air conditioning process and system for an automobile or other vehicle is disclosed in which the sensible heat from the engine coolant is utilized to drive the generators. The invention, which employs water as the refrigerant and a lithium bromide solution as the absorbent, comprises two successive working solution absorption-generation circuits, the first circuit operating at low-intermediate pressure and the second circuit operating at intermediate-high pressure. An additional feature of the invention is the inclusion of a first and second storage reservoir holding, respectively, chilled refrigerant and concentrated working solution, the incorporation of the reservoirs permitting pre-cooling of the vehicle's interior prior to operation of the vehicle.

대표청구항 ▼

[ What is claimed is:] [1.] In combination with a vehicle having a recirculating liquid engine coolant, an absorption cycle air-conditioning process for cooling the passenger compartment of said vehicle, said process utilizing a refrigerant consisting essentially of water and an absorbent consisting

[ What is claimed is:] [1.] In combination with a vehicle having a recirculating liquid engine coolant, an absorption cycle air-conditioning process for cooling the passenger compartment of said vehicle, said process utilizing a refrigerant consisting essentially of water and an absorbent consisting essentially of lithium bromide, said absorbent and said refrigerant being intermiscible to form working solutions of variable concentration, said process comprising the steps of:(a) at relatively low pressure, contacting at least a portion of said refrigerant with a first working solution to absorb at least a portion of said refrigerant into said first working solution, said refrigerant being initially in vapor phase;(b) pumping said first working solution to an area of intermediate pressure;(c) utilizing a portion of the heat available from said engine coolant to desorb as vapor at least a portion of said refrigerant from said first working solution;(d) passing said first working solution resulting from step (c) through a first pressure reduction valve and a first heat exchanger, thereby reducing pressure and temperature to the operating conditions of step (a);(e) returning said first working solution to step (a) to complete the first working solution circuit;(f) at said intermediate pressure, contacting at least a portion of the refrigerant vapor from step (c) with a second working solution to absorb at least a portion of said refrigerant vapor into said second working solution;(g) pumping said second working solution to an area of relatively high pressure;(h) utilizing a portion of the heat available from said engine coolant to desorb as vapor at least a portion of said refrigerant from said second working solution;(i) passing said second working solution resulting from step (h) through a second expansion valve and a second heat exchanger, thereby reducing pressure and temperature to the operating conditions of step (f);(j) returning said second working solution to step (f) to complete the second working solution circuit;(k) condensing at least a portion of the refrigerant vapor from step (h) at relatively high pressure;(l) passing the resultant liquid refrigerant to an area of relatively low pressure;(m) directing a flow of relatively warm air past said liquid refrigerant thereby cooling said air flow and vaporizing at least a portion of said liquid refrigerant, and;(n) passing the resultant refrigerant vapor to step (a).