| 摘要 |
A wick for use in a capillary loop pump heat pipe. The wick material is an essentially uniformly porous, permeable, open-cell, polyethylene thermoplastic foam having an ultra high average molecular weight of from approximately 1,000,000 to 5,000,000, and an average pore size of about 10 to 12 microns. A representative material having these characteristics is POREX UF which has an average molecular weight of about 3,000,000. This material is fully compatible with the FREONs and anhydrous ammonia and allows for the use of these very efficient working fluids in capillary loops.
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