Compact heat exchanger for a cryogenic refrigerator

摘要

A heat exchanger has a set of tubes through which fluid pass. In thermal communication with these tubes are fins of high thermal conductivity material which disperse the heat contained within the fluid. Also useful in dispersing the heat contained within the passing fluid are rods inserted within the tubes to substantially decrease the hydraulic diameter of the tubes. This heat exchanger may be used in a cryogenic refrigeration system which also includes a compressor for compressing refrigerant gas, a separator for separating refrigerant gas and oil used by the compressor, and a cryogenic refrigerator for expanding the refrigerant gas.