Abstract: The ejector mass flow multiplier refrigeration cycle utilizes a single-phase ejector which is operated at a high entrainment ratio and performs the function as a mass flow multiplier. The high-pressure motive force input into the single-phase ejector is provided by a vapor compressor which sucks a portion of the output mass flow from an evaporator with the remaining mass flow output from the evaporator being sucked into low-pressure port of the same single-phase ejector. The low-pressure output of the single-phase ejector is inputted into the low-pressure port of a two-phase ejector where the mass flow pressure is increased for the temperature conditions of a condenser. A high-pressure liquid pump provides the motive force input of the two-phase ejector and for the input to an evaporator where the cooling effect of the system takes place.

Abstract: The enhanced liquid pressure cycle having an ejector consists of a high-pressure positive displacement liquid rotary pump (liquid pressure pump). The liquid pressure pump provides the primary high-pressure mass flow to the evaporator and the pressure mass flow to the driving force input to a condensing and mixing ejector. The system is further enhanced by a vapor compressor/turbine/motor combination which provides the ability to suck out and lower the refrigerant pressure output from the evaporator while the interconnected turbine offsets the power input requirements of the vapor compressor. The high-pressure liquid from the liquid pressure pump is divided into two pressure streams. The first stream is directed to an expansion valve then on to an evaporator for space air or other medium cooling. The second stream is directed to the driving force input port of an ejector. This high-pressure input mixes with the low-pressure output from the turbine.

Abstract: The liquid pressure cycle having an ejector pressurizes the liquid refrigerant of the system with a positive displacement rotary pump rather than pressurizing the vapor refrigerant with a vapor compressor. This high-pressure liquid proceeds into two pressure streams. The first stream is directed to an expansion valve then on to an evaporator for space air or other medium cooling. The second stream is directed to the driving force input port of an ejector. This high-pressure input mixes with the low-pressure output from the evaporator. The result of this mixing provides for sufficient pressure enhancement to condense the combination refrigerant vapor as it passes through the condenser. The liquid flow from the condenser proceeds back to the liquid pressure pump and the cycle is repeated.