Applications for heatpipes
Thermal transmission resulting from changes in the state of the aggregate is a special type of convection.
One example of this is the heatpipe, a closed tube containing a liquid (e.g. water) which is
evaporated at one end and condensed at the other. The liquid is returned by capillary flow through
either a mesh network or a system of internal fins within the pipe which transports the heat of evaporation.
This is a much more efficient way of transmitting heat than by conduction through a solid.
A heatpipe can only operate within a specific temperature range and has to be specially designed
for a given application. Heatpipes are not a substitute for heatsinks. They are used to transmit heat and to improve a
system‘s dynamic properties by better heat distribution. They are ideal:
> when there is a lack of space in the vicinity of the heat source
> for effective heat distribution where there are clusters of heat sources
> for extracting heat through the seals of closed casings
> for coping with sudden, short-term heat surges
> where there are moving parts or assemblies
> where there are weight problems and for light structures. More technical details and information on heatpipes can be found in the section on high-power heatsinks. heatpipe