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The most common screen mesh heat pipes consist of a smooth walled copper tube with a woven copper mesh as the wick structure. This wick structure is created from a metal fabric or mesh, the mesh is wrapped around a forming mandrel which is then inserted into the heat pipe. After placement, the mandrel is carefully removed leaving behind the wrapped mesh. The mesh tries to unwrap itself leaving the wick held by this tension against the inner wall of the heat pipe.

The capillary force that is generated by the mesh is determined by the size of the rectangular openings between the individual threads. Heat pipes with this type of wick structures are capable of operating in gravity-aided and horizontal orientations, and are capable of returning the working fluid against gravity at angles up to 5? from horizontal.

These heat pipes can also be used in applications with radial heat fluxes up to 40 W/cm2.

Latest News

PCIM Europe Exhibition 2018

Columbia-Staver are pleased to announce that we will again be exhibiting at the PCIM Europe exhibition in Nuremberg, Germany. We will be at stand 226 in Hall 7.

Full details about the three day exhibition from the 5th to 7th of June 2018 can be found at


PCIM Europe Exhibition 2018

Continuous Investment – Helium Leak Detector

Columbia-Staver Ltd has recently invested into a Helium Leak Detector to boost its liquid cold plate and advanced manufacturing test capabilities. The newly acquired Agilent PR02 leak detector was chosen because it offers leak detection capabilities with a sensitivity down to 5x10-13 Pa m3Continuous Investment – Helium Leak Detector

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