Heatpipe Selection for CPU Cooling Applications

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Discussion Overview

The discussion revolves around the selection and performance of heatpipes for CPU cooling applications, specifically addressing temperature ranges and their implications for effective cooling. Participants explore the suitability of heatpipes in relation to the operational temperatures of CPUs and the heat sink setup.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant expresses uncertainty about whether the temperature ranges of the heatpipes are appropriate for cooling CPUs, noting specific temperatures for both the hot and cold sides.
  • Another participant suggests that the suitability of the heatpipe depends on the specific product details, asking for a specification sheet or performance curve.
  • A third participant indicates a lack of specific product information but seeks insights from those with experience in similar applications.
  • One participant reassures that there is a good chance the heatpipe will perform adequately, explaining that a wider temperature difference is generally beneficial for heat transfer and that heatpipes can adapt to varying operating ranges.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the suitability of the heatpipes for the specific application, as there are differing views on the importance of temperature ranges and the need for product specifications.

Contextual Notes

The discussion highlights the absence of specific product details, which may limit the ability to fully assess the heatpipe's performance in the described application.

jwells
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I'm using heatpipes in a cooling application using the same aluminum fin heat sink used to cool CPUs. I'm not sure if the temperature range of the heatpipes are the best for this application. CPU may run 40-90c and I may be getting 25-30c on the hot side and 5c on the cold. Are the ranges close enough together that I don't need to worry about it?
 
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It would depend on the particulars of the heat pipe product you are using. Do you have a spec sheet? Performance curve?
 
No I don't have it for this particular product. I'm using this a different application and was hoping someone with experience with these might be able to say whether it should be ok or not.
 
Well, there is a good chance it will be ok. The way you worded the OP implies you think a wide temperature difference is a bad thing, but usually it is a good thing for heat transfer. And heat pipes do tend to be very forgiving of different operating ranges. If they use water as the working fluid, the pressure will adjust to the temperature.
https://en.wikipedia.org/wiki/Heat_pipe#Structure.2C_design_and_construction
 

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