The fanless heatsink.

[island911]

Originally Posted by kach22i

...
It looks like a good idea..

Originally Posted by red-beard

My opinion is confirmed. ...

Wow, bad science.

But what if it had casters? (yeah, I know, A bit on the nose, there.)

[Por_sha911]

Seems like a more complex solution to a problem that virtually no one is having.
The motor is spinning a lot more weight which means more heat generated and more wear on the bearings especially if it is not perfectly balanced. This system would also be more prone to clogging by dust. You're going to have dust collect from static. Once the fins are clogged you'd have even more stress on the motor and zero cooling.

[kach22i]

The concept does remind me of something else.

Gnome Rotary Engine
Animated Engines, Gnome Rotary

This fan might be 'bad science" when it comes to replacing all other computer cooling fans, however it may have some applications where it makes sense, and is in fact "a good idea".

Where that line is crossed is not for me to decide, but future engineers.

Not a lot of Gnome Rotary Engines being made these days, also something to consider.

[island911]

so kach, just how well do you think that precision air gap will hold on some future car/airplane/hovercraft engine? (gyro effects and accelerations of bumps etc...)


btw, had you noticed that your linked rotary engine already has cooling fins spinning thru air? (I wonder if they collect dust...)

[Zeke]

Originally Posted by island911

How is it NOT a fan?

Exactly. Waited for that.

Boundary layer? I guess conventional heat sinks need a duck tail.

[sammyg2]

They moved the boundary layer of insulating air. It used to be on top of the heat sink, now it's under it.

See brando's post above.

[kach22i]

Originally Posted by island911

precision air gap

I wonder if that air bearing gap could be replaced with conventional bearings for mobile applications.

Moving air around the heatsink, or moving the heatsink around in air it's just a different way of doing things.

Like others pointed out, rotating all that heat sink mass has it's own set of problems.

I for myself want to remain open minded so that if such a solution should make sense in a certain application, that I will be able to recognize and appreciate it.

Is rotating a mass always a bad thing? Of course not, a time and place for everything.

Porsche 918 - Wikipedia, the free encyclopedia

Power to the electric motors is provided by a flywheel accumulator KERS system that sits beside the driver in the passenger compartment and boosts the total power to 767 horsepower for up to eight seconds when fully charged

Kinetic Energy Recovery Systems
Kinetic Energy Recovery Systems - Wikipedia, the free encyclopedia

Could KERS be combined with an internal or external mass-fan cooling system? Why should it be, what would be the goal?

Just saying, one day a design or concept engineer will be faced with a problem, and who knows what the solution may be?

Keeping an open mind, because a closed mind learns nothing new.

[LSA]

The 3ghz "wall" is bs it's more like 4ghz, I see cpus clocked past 3ghz all the time hell even my nearly 5 year old 6000+ runs @ 3Ghz and has a little more oomph if I wanted to overclock it.

[Brando]

kachi... since we are detracting to kinetic energy storage, why didn't Porsche use a rotating object that just contained mercury? That way it could also work to transfer electric current as well?

[kach22i]

Originally Posted by Brando

why didn't Porsche use a rotating object that just contained mercury?

Because then it would be a UFO?

[Brando]

Originally Posted by kach22i

Because then it would be a UFO?

I'm glad you got that!

[red-beard]

Originally Posted by kach22i

I wonder if that air bearing gap could be replaced with conventional bearings for mobile applications.

Moving air around the heatsink, or moving the heatsink around in air it's just a different way of doing things.

Like others pointed out, rotating all that heat sink mass has it's own set of problems.

I for myself want to remain open minded so that if such a solution should make sense in a certain application, that I will be able to recognize and appreciate it.

Is rotating a mass always a bad thing? Of course not, a time and place for everything.

Porsche 918 - Wikipedia, the free encyclopedia


Kinetic Energy Recovery Systems
Kinetic Energy Recovery Systems - Wikipedia, the free encyclopedia

Could KERS be combined with an internal or external mass-fan cooling system? Why should it be, what would be the goal?

Just saying, one day a design or concept engineer will be faced with a problem, and who knows what the solution may be?

Keeping an open mind, because a closed mind learns nothing new.

The issue is the heat transfer from the stationary mass to the rotating mass. It doesn't just happen by magic. There has to be a mechanism. And putting in an air gap is basically a serious resistance to heat transfer, even though they seem to have ignored this.

[jyl]

Originally Posted by Brando

Just because they're doing something differently doesn't mean they're doing it better.

As for the multi-threading... I believe many blends of *NIX have been doing multi-threading for some time.

Not a lot of applications written to run parallel on 64 cores, 256 threads. Only specialized stuff + graphics.

[gwood]

Because then it would be a UFO?
No, then it would be a Vimana.

I've been wanting to build one of these:

Mineral Oil Submerged Computer; Our Most Popular Custom PC

[LSA]

Originally Posted by gwood

Because then it would be a UFO?
No, then it would be a Vimana.

I've been wanting to build one of these:

Mineral Oil Submerged Computer; Our Most Popular Custom PC

Wow where's the really really want lemur when you need it. That's awesome!

"It has also allowed an overclock of a QX9770 from a stock frequency of 3.2GHz, to an overclocked frequency of 4.6GHz!" running at under 50c at full load That's pretty insane.

[RWebb]

Obviously, those monkeys at our National Laboratories do not understand heat transfer!

Of course, since the assembly is METAL it can stand higher heat.

And, of course, heat will be lost by radiation AND by forced convection - it is spinning after all.

I am just certain that all the nay-sayers carefully read the entire research report and after performing their OWN analysis, know that (even tho heavily internally peer reviewed) it just cannot be correct, and therefore sent communications to the Sandia Lab Director's office before posting here.

[Brando]

Originally Posted by RWebb

Obviously, those monkeys at our National Laboratories do not understand heat transfer!

Of course, since the assembly is METAL it can stand higher heat.

And, of course, heat will be lost by radiation AND by forced convection - it is spinning after all.

I am just certain that all the nay-sayers carefully read the entire research report and after performing their OWN analysis, know that (even tho heavily internally peer reviewed) it just cannot be correct, and therefore sent communications to the Sandia Lab Director's office before posting here.

Obviously they know better so we should blindly trust them.