Hot discharge gas desuperheater

In a vapor compression refrigeration system comprised of an expansion device, evaporator, compressor, and condenser, a passive desuperheater for passively desuperheating the superheated gas generated by said compressor, said passive desuperheater comprising:

• a shell and tube condenser, comprising an inlet and an outlet, said inlet and outlet adapted for the passage of a coolant such as water, an upper interior portion and a lower interior portion, said lower interior portion containing condensed refrigerant, and said upper interior portion containing gaseous refrigerant, an outlet adapted for removal of cool liquid refrigerant from said lower interior portion, a superheated gas inlet adapted to receive a line, said line providing superheated hot discharge gas from said compressor, a narrower pipe connected to said superheated gas inlet, and a wider pipe, comprising a first end opening and second end opening,
• wherein said first end opening is loosely fitted over said narrower pipe, where there is a region of overlap of said narrower pipe and said wider pipe, where in said region of overlap, said narrower pipe is nested within said wider pipe, and where cool liquid refrigerant enters said wider pipe at said region of overlap and mixes with the flow of superheated gas, and where said mixture flows through said wider pipe and is discharged from said second end opening of said wider pipe into said upper interior portion of said receiver as desuperheated gas.