Mass flow multiplier refrigeration cycle

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.

What is claimed is: 
     
         1 . A mass flow multiplier refrigeration cycle comprising:
 a vapor compressor for sucking and converting a low-pressure vapor refrigerant into a high-pressure vapor refrigerant. The vapor compressor capacity is a fraction of the overall system refrigeration output;   an evaporator(s) for evaporating a low-pressure refrigerant after being decompressed in which heat is absorbed;   an expansion valve(s) for decompressing a high-pressure liquid refrigerant into a low-pressure refrigerant for input into an evaporator;   a condenser for converting a high-pressure vapor refrigerant into a high-pressure liquid refrigerant by the removal of heat;   a high pressure liquid pump which increases the liquid refrigerant into a higher pressure whose mass flow is a multiple of the systems rated capability;   a single-phase ejector whose operating parameters are such that the ER (entrainment ratio) is maximized;   a two-phase ejector whose operating parameters are such that the output pressure is increased for the temperature conditions of a condenser.