Low pressure drop condenser/evaporator pump heat exchanger

摘要

A heat exchanger includes a porous cylindrical sleeve (240) with a bore (242) into which liquid coolant is admitted. The liquid permeates the sleeve (240) but cannot leave the outer surface. A pipe (232) surrounds the sleeve (240). The pipe (232) has a cylindrical outer surface (233) and an inner surface defining protrusions (234) and vapor channels (236) about the protrusions (234). The inner ends of the protrusions (234) bear against the outer surface of the sleeve (240). A plurality of helical channels (202) are helically arranged about and in thermal contact with the outer surface (233) of the pipe (232). The ends of the helical channels (202) can be coupled to plenums (820, 824), each of which may be coupled by a pipe (56, 58) and a fluid disconnect (60, 62) to one end of a thermal loop including a heat source (50). Heat-laden vapor passes through the helical channels (202) and is cooled to liquid. The heat is withdrawn into the pipe (232) and passes through the protuberances (234) to vaporize the liquid near the surface of the porous sleeve (240). The resulting vapor is collected and coupled to a condenser (22).