Dryice container tests in 160w bench

[Planet]

Ah ok, thank you

Check the edit for picture of why.

[ilkkahy]

Thermal probe is placed inside the copper die which is between resistor and container. Measuring container bottom is not the right way to go which can be seen from those ansys pictures too

Is that red area the dryice level which is why upper from there container starts to get warmer or whats the reason for it?

And about silver container, i dont think its worth a try. Any inpurities will often result in loss of heat conducting properties and practically this means youll propably need to have very pure silver to get pass 99,99 copper. Im not sure how does silver heat conducting improve in cold temps but copper has this property too. I would definetly concentrate on designing copper containers instead of changing material to silver

Have you made comparisons with same size old school wide flat bottom and cone/stepper type bottoms with that program Cpt.Planet?

Nice to notice that some people still finds this stuff intresting!

[Planet]

Thermal probe is placed inside the copper die which is between resistor and container. Measuring container bottom is not the right way to go which can be seen from those ansys pictures too

Is that red area the dryice level which is why upper from there container starts to get warmer or whats the reason for it?

And about silver container, i dont think its worth a try. Any inpurities will often result in loss of heat conducting properties and practically this means youll propably need to have very pure silver to get pass 99,99 copper. Im not sure how does silver heat conducting improve in cold temps but copper has

this property too. I would definetly concentrate on designing copper containers instead of changing material to silver

Have you made comparisons with same size old school wide flat bottom and cone/stepper type bottoms with that program Cpt.Planet?

Nice to notice that some people still finds this stuff intresting!

Its not measuring the base its actually measuring very close core temps. For some reason thats how the cfx picture shows it.

The red area is about an inch above where the acetone/dry ice mixture.

Yes I actually have. I have done it with 2 cones, 1 wide old school flat, and one that was rounded(filleted) with the same internals. The one with the tallest cone was the middle performer but it is able to dissapate the heat better and keep the core under constant temps going from idle to load and so on. The old school just flat/no cone was the coldest at the core but suffered from having to much mass. The rounded base was the worst performer. We are talking about differences of 1C however.