Capillary evaporator

Details Capillary evaporator Capillary evaporator

2005-03-08

2005-03-08

Duong, Tho V (Department: 3743)

Heat exchange

Intermediate fluent heat exchange material receiving and...

Liquid fluent heat exchange material

C165S104210, C165S104330

Reexamination Certificate

active

06863117

ABSTRACT:
A capillary evaporator (100) for removing heat from a heat source (102), particularly under high heat-flux conditions. The capillary evaporator includes a housing (104) having a plurality of ribs (108) in thermal communication with the heat source when the heat source is present. The ribs define a plurality of vapor channels (110) for receiving vapor (112) caused by the vaporization of working fluid (114) within the evaporator. A capillary wick (106) is located within the housing in spaced relation to the ribs. A bridge (118) interposed between the capillary wick and ribs thermally communicates heat from the ribs to the wick and fluidly communicates the vapor from the wick to the vapor channels. The bridge includes a plurality of fractal layers (FL) each having openings (122) and webs (128) that are scaled in size and number with respect to the immediately adjacent fractal layer and are arranged so that the openings in adjacent layers overlap one another.

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Loop Heat-Pipe Evaporator with Bidisperse Wick Structures; by John H. Rosenfled, David B. Sarraf, Dimitry K. Khrustalev, Peter J. Wellen and Mark T. North of Thermacore, Inc. for Goddard Space Flight Center; http://www.nasatech.com/Briefs/Nov99/GSC14225.html; Nov. 1999.

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