Cooling systems

[immortality]

Alloy radiators are cheaper as well

this one.
why do you think car manufacturers do this maximise profit. copper costs a bloody fortune. VSH had it nailed looking at the manufacture of the copper rad ; the different techniques to seal the thing via brazing etc really lessen the copper capability. there was a superb thread on aussie v8 which i read up on when i fixed the overheating problems on the hilux. that thing has an aftermarket alloy radiator in it from a vn v8.

reverse impeller ;


edelbrock seem to be the only ones that make them. and they come at a cost. i think an EWP would be cheaper.

then theres the radiator cores - the 'triple' and 'dual' flow cores which have the end tanks welded with plates in them to force the water thru the radiator in different stages, theory is keep the water in the radiator longer to make it cooler before it re-enters the engine. i think the aussie desert coolers or someone like that are all over that. but come with respective price tags, which, IMHO is completely unwarranted in this ripoff country.

Those are probably the best looking pressed steel impellers I've seen. Note the length and curve of the blades, good at moving a decent volume of fluid Vs those the other I linked with the short straight steel blades that are probably really good at cavitating coolant.

[MAGP]

I have to admit I did read a couple of years ago about a company that installed water cooling on its servers. I can't see the need for it if the server room is properly designed to maximise airflow paths from floor through server racks to ceiling using a properly designed A/C system to maintain a low ambient air temp.

Thanks for the info about the reverse impeller.

[immortality]

Reverse impeller wouldn't work on our engines though...

Given the option, I know which one I'd pick....

[psyolent]

the cast one ANY DAY immo.

MAGP. i think some of the SUN stuff in the 90's looked to water cooling their servers.

agreed, most data halls these days, run around the 22 degrees mark. in times gone by it was run them as cold as possible, but, now, not so much. having the right CRACs and hot/cold aisles with the correct flow is more key these days - although that said having vents and front to back racks with the necessary air deflectors is pretty important too.

[MAGP]

Reverse impeller wouldn't work on our engines though...

Correct, the pulley needs to also run in reverse for the impeller to work as designed. This would mean changing the serpentine belt path.

[psyolent]

might want to think about that. if they impellor blades are reversed, then, normal drive direction would suffice, however, the flow would be reversed. what would have to change is thermostat position ....

[MAGP]

MAGP. i think some of the SUN stuff in the 90's looked to water cooling their servers.

I didn't know that but then again those old machines were pretty chunky and produced an enormous amount of heat.

agreed, most data halls these days, run around the 22 degrees mark. in times gone by it was run them as cold as possible, but, now, not so much. having the right CRACs and hot/cold aisles with the correct flow is more key these days - although that said having vents and front to back racks with the necessary air deflectors is pretty important too.

Yep, it's not really rocket science.

might want to think about that. if they impellor blades are reversed, then, normal drive direction would suffice, however, the flow would be reversed.

I can't visualise that. I'll think on it overnight.

what would have to change is thermostat position ....

I think, but am not positive, the 90s LT1 thermostat was in the traditional position and it was reverse flow with an electronic pump.

[vlad01]

Greg, have you seen modern data centers and supercomputers how some of them cool now? some years back they used to use traditional water blocks, plumbing and radiator systems, some later then used micro mist evaporative cooling blocks on the CPUs but now days with a lot of supercomputers GPGPU based which are even more power hungry and a larger TDP per chip they go to lengths of fully submersed in tanks of liquid, so of the eco design super computers circulate the liquid throughout the facility to heat the building. Pretty neat I reckon, its enthusiast level stuff gone to commercial/industrial scale.

Bit of the topic now but but the immersion cooling is pretty sweet. I remember back in the day when some of us nerd would immerse all the guts in mineral oil or paraffin oil lol.

Here is a video on such system.

[youtube]https://www.youtube.com/watch?v=a6ErbZtpL88[/youtube]

[MAGP]

Interesting video. I'd like to see actual running cost comparisons, and I'm not sure how that system can save space either.
There was an immersed system build on LinusTechTips years ago.

Should this PC cooling discussion be split into a different thread?

[Macca97]

anyone else realized that transmission in the heading for this area is missing an S, or have i only just noticed?