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A heat pipe with no wick structure is often referred to as a thermosyphon. Some heat pipes can operate in any orientation, since they use the capillary pumping action of the wick structure to return working fluid from the condenser back to the evaporator. In contrast, a thermosyphon uses gravity to return liquid, so the evaporator must be located below the condenser.

One possible advantage is that a thermosyphon can also act as diode heat pipes. When heat is applied to the condenser, there is no condensate present, and hence no way to form vapour and transfer heat to the evaporator other than conduction through the envelope material.

These heat pipes are typically used in applications with radial heat fluxes up to 5 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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