Abstract: A power generation-refrigeration system comprising a refrigerant boiler, and a primary turbine for extracting energy from the refrigerant. The system also comprises a reversible turbomachine having a compressor mode of operation for compressing refrigerant passing therethrough and a turbine mode of operation for extracting further energy from the refrigerant; a first flow path in communication with the primary turbine, the reversible turbomachine, and a condenser; a second flow path in communication with the primary turbine, the reversible turbomachine, the condenser, and an evaporator; and means for directing refrigerant through the first flow path when the reversible turbomachine is in the turbine mode and through the second flow path when the reversible turbomachine is in the compressor mode.

Abstract: A vapor compression refrigeration system which has a multi-stage compressor, a condenser, a flash economizer, an economizer-condenser, a thermal economizer and a chiller. Liquid refrigerant is flashed in the flash economizer such that part of the liquid refrigerant changes state from a liquid to a gas absorbing heat from the remaining liquid refrigerant, the gaseous refrigerant being drawn into the compressor between stages or being condensed by the economizer-condenser within the flash economizer. An economizer damper valve is provided between the compressor and the flash economizer to regulate this flow of gaseous refrigerant to the compressor depending upon the thermal capability of the economizer-condenser to recondense the flashed refrigerant of the flash economizer.

Abstract: A vapor compression refrigeration system which has a compressor, a condenser, a flash economizer and an evaporator to form a primary refrigerant loop and a second compressor and an economizer-condenser which partially form a secondary refrigerant loop. Gaseous refrigerant from the flash economizer is recompressed in the second compressor and thereafter recondensed by the economizer-condenser. The recondensed refrigerant is then flashed in the flash economizer further cooling the liquid refrigerant therein.

Abstract: A vapor compression refrigeration system which has a compressor, a condenser, a low temperature flash economizer, a high temperature flash economizer and a chiller connected to form a primary refrigerant loop and a second compressor and economizer condenser connected to partially form a secondary refrigerant loop. Gaseous refrigerant from the high temperature flash economizer is condensed by the economizer condenser and then flashed in the low temperature flash economizer. The gaseous refrigerant from the low temperature flash economizer is recompressed by the second compressor and thereafter recondensed by the economizer condenser. The recondensed refrigerant is then circulated to the low temperature flash economizer together with the remaining liquid refrigerant from the condenser.

Abstract: An absorption refrigeration system having a primary condenser-generator unit powered by solar energy, or any other suitable relatively low temperature energy source. A secondary condenser-generator unit is operatively connected to the primary unit. The secondary unit is powered by a refrigerant circuit arranged to move the heat of condensation developed in the secondary condenser into the secondary generator. The secondary condenser-generator unit is used to either augment or supplement the primary combination.

Abstract: A refrigeration unit for providing both heating and cooling employing two, closed circuit, mechanical vapor compression systems operatively connected by an indirect heat exchanger positioned between the discharge of the compressor and the condenser of a first cooling system, the exchanger also serving as the evaporator in the second heating system.

Abstract: A combination vapor compression and refrigeration cycle employing a mechanical compressor for developing high temperatures. The suction end of the compressor is exposed to both the vapors discharged from the refrigeration evaporator and a mixture of oil foam and refrigeration vapors discharged from an absorption generator. As the mixture passes through the compressor, it absorbs the heat of compression and is discharged into a heat exchanger where energy is transferred to a reclaiming substance. Because of the absorptive process, relatively high temperatures are developed in the compressor discharge whereby the energy rejected into the reclaiming substance can be effectively utilized in domestic and industrial heating applications.

Abstract: A combination vapor compression and refrigeration cycle employing a mechanical compressor for developing high temperatures. The suction end of the compressor is exposed to both the vapors discharged from the refrigeration evaporator and a mixture of oil foam and refrigeration vapors discharged from an absorption generator. As the mixture passes through the compressor, it absorbs the heat of compression and is discharged into a heat exchanger where energy is transferred to a reclaiming substance. Because of the absorptive process, relatively high temperatures are developed in the compressor discharge whereby the energy rejected into the reclaiming substance can be effectively utilized in domestic and industrial heating applications.

Abstract: A high lift energy reclaiming circuit for use in a vapor compression refrigeration system, the circuit being interposed in the system between the compressor discharge line and the condenser inlet line. Refrigerant vapors discharged from the compressor are exposed to, and condensed into, a strong absorbent solution to develop temperatures within the mixture that are in excess of the saturation temperature of the discharge vapors. The mixture is brought into a heat exchanger where the high temperature energy is recovered by a heat reclaiming substance, such as water or the like. The diluted absorbent in the mixture is then separated from unabsorbed refrigerant vapors and the dilute solution flash cooled by expanding the solution to the inlet pressure of the compressor.