let me hear it. I want opinions, facts, blabbering, etc.

4/14/2009 10:02:21 PM

motivation:
http://www.pirate4x4.com/forum/showthread.php?t=739853

4/14/2009 10:28:19 PM

the plate/fin type are supposed to be more efficient meaning you can get away with a smaller cooler if space is a concern. other than that, there's not really any difference that i'm aware of. just go for whatever you can get the best deal on and is sized appropriately for the application.

4/14/2009 10:29:39 PM

hurley, i actually read that thread earlier this evening

4/14/2009 10:30:47 PM

^^bingo

Quote :

"Don't mis-lead people with the notion quoted above. There is in fact a "magical" fluid velocity at which a given heat exchanger design performs best. It's very common to adjust the coolant flow rate (pump) and cross sectional area of the fluid passages in order to give the hot fluid enough time to transfer its heat to the cold fluid, but not so much time that we lose efficiency. Turbulators (the springs inside a RTPF cooler, dimpled tubes on a radiator, or inserts in an intercooler) are all perfect examples of how we slow the fluid down and impart turbulent flow to increase heat transfer. If the fluid flowed through so quickly that it was laminar the entire way, we would only transfer heat from the "skin" of the fluid and not the "core." This applies equally well to the cold side of the heat exchanger (air side). We add air fins to slow the air down as it goes through the core so it can draw more heat away. If this doesn't make sense, imagine how effective a radiator would be without air fins? The air would zing right through without taking away any heat. "

-from pirate.




you looked at the derale setups? this for the surpadorge?

I am inches from relocating my factory cooler out of the way of the intercooler, and removing that pesky coolant/trans fluid hx behind my exhaust maniflood. believe it or not, my entire heat exchanger plumbing is hard lines either way, I was thinking about remounting the cooler to the bed and ducting some air over it real redneck like

I kid.

[Edited on April 14, 2009 at 10:36 PM. Reason : dont let me detract from the thread, this is an increasingly worthy topic in my eyes these days]

4/14/2009 10:35:04 PM

Plate/fin. I've used both kinds.

1. Turbulence is definitely desirable because fluid temperature remains much more homogeneous throughout its flow path. There is no high gradient across the flow cross-section. In turbulent flow, boundary layers are MUCH smaller, and thus heat transfer can occur much more readily.

2. Plate/fin type coolers provide much more surface area over which heat can be dissipated. The narrow passages ensure that there will never really be a big temperature gradient across the flow cross-section. Why do you think automotive radiator flues are shaped like they are? The big reason that radiator flues are not narrower is that there is very little fluid pressure differential to impart fluid velocity, and the flues must be big enough to adequately pass coolant without excessive fluid friction loss (and water has some damn good capillary/adhesion properties).

4/15/2009 3:18:14 PM

Quote :

"Turbulators"

what a perfectly awesome word, i haven't heard that in a while.

^^i think i mentioned it in another thread, but i'm running a plate/fin cooler layed down flat just under the nose of my c5. works great, i don't see fluid temps over 180-185 even on 90+ days beating on it. mounted on the radiator it would get up to 190-195.

the only downside is it's much more vulnerable to road debris, but the idiot alarms could wake the dead so if it did ever gets hurt i'd have plenty of time to shut down.

[Edited on April 15, 2009 at 4:04 PM. Reason : .]

4/15/2009 4:01:47 PM

i would recommend taking MAE 301 or CHE 315, then you can make an educated decision

4/15/2009 4:28:51 PM

and you still drove around a body lifted chevy 1500

4/15/2009 6:29:24 PM

^^MAE 310 would probably be more useful

4/15/2009 8:25:03 PM

well if we're arguing about a heat exchanger specifically, then id say thermo.

4/15/2009 10:26:53 PM

heat exchanger is gone, stock cooler is gone. looking at a b&m 70297. recommendations? going to run that/similar cooler and a remote atf filter kit.

4/15/2009 11:01:27 PM

shoooo, all we need up in hurrr is some TED!

4/16/2009 12:31:48 AM

Shit...This does have MAE310 written all over it. And 308 for you pukes who wanna argue closed flow boundary layers, etc. Combination of conductive and convective heat transfer.

Thermo won't tell you much at all about this kind of thing, nigs.

I'm still all about the flat plate style. I've used two of them, courtesy of Carquest and my former ties to them. I like 'em.

I think remote mounted cooler with thermostatically controlled cooling fan is where it's at, fool. What I would do.

Of course, if I were gonna do the setup I really would like, it would be a fluid-to-water exchanger and either a small car or bike radiator or a big ac condenser. But then you'd need a water/coolant circulation pump. And I've already got a 16" fan in need of something else to do.

4/16/2009 12:45:16 AM

reminds me of

Quote :

"two plates of infinate surface area spaced 3mm apart...... with a flow of....... reynolds number......"

make it stop, i'm gonna have nightmares, and true, i meant transport and fluids, not thermo, been too long for me to remember, it was CHE 311/312

Quote :

"And I've already got a 16" fan in need of something else to do."

blow farts in peoples' general direction at twice the speed of smell?

[Edited on April 16, 2009 at 3:48 AM. Reason : ]

4/16/2009 3:46:47 AM

in 30-40 years, dan is so going to be the hillbilly laid up in a rocking chair smokin a pipe or cigar, telling little kids all our wild stories and instigating the kids to perform reenactments.

he's gone be like heu boy come on over here, i got a story for you. now why don't you see if you and your friends can getsomething going, i need to be entertained damn it.

4/16/2009 6:00:34 AM

Quote :

"Thermo won't tell you much at all about this kind of thing, nigs."

WELL SHIT ON ME


69, what's your degree again?

4/16/2009 8:06:34 AM

He seems to have a masters degree in debugging stupid car problems over the internet.

4/16/2009 8:25:36 AM

i was thinking he has a BSME... at least he's had the same classes as I

.... I did have thermo with Sumfoo1

4/16/2009 8:50:38 AM

69 has a degree in ChemE, particularly pulp and paper science. Dat fool is kind of like me; he's worked doing just about everything.

4/16/2009 9:16:07 AM

i are an engrineer you can has one too

4/16/2009 11:41:26 PM