Re: Intel publishes Larrabee paper

On Mar 4, 11:29 am, Rick Jones <rick.jon...@xxxxxx> wrote:

I do not seek to diminish the issues, just clarify a point - does
there _have_ to be a mechanical pump?  Don't heatpipes work via
convection?

It is true that heat pipes _do_ work by convection. The heated fluid
moves out of the area being cooled, and then gives up heat somewhere
else; this could be simply by conduction and radiation, or maybe even
by the more elaborate refrigerator-like processes cited in another
reply.

But while that does let them remove more heat than a conductor would,
this still removes less heat than liquid cooling involving a pump,
because then you can bring huge quantities of cool liquid to the
affected area, much more than the power from the heat being dissipated
can move by itself.

So, if you're trying to control the temperature of a chip within
narrow limits, and if the geometry is such that you only have narrow
channels in which to bring cooling fluid to the relevant area
(requiring more force to push the fluid through) then a mechanical
pump is beneficial.

John Savard
.

Relevant Pages

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  • Re: Intel publishes Larrabee paper
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