GrimmSpeed

i've decided to play around with some dispersant because there really hasnt been much in the way of actual data out there. until now i've just used thermal barrier type coatings so this is new territory for me. i know alot of people put grill paint on things like intercoolers and radiators but i think it would be cool to be able to black them out AND have function to it.

a little info about thermal disperant:
"Being able to move and control heat is of tremendous importance. Excessive temperature can lead to metal fatigue, boiling fluids, damaging metal expansion, reduce electrical efficiency and a host of other problems. Traditionally dealing with heat has been handled either by expanding the
radiating surface, constructing parts from materials that are more heat conductive and using the color black. With advances in thermal management methods additional ways of enhancing heat trans-
fer now exist. Individual products such as TLTD can be utilized by themselves or in conjunction with other coatings to manage the flow of heat. TLTD is capable of transferring heat faster than the bare metal surface. While TLTD does make use of the color black, TLTD is more than a simple "black body" heat emitting coating. TLTD includes ingredients that also contribute to increased heat flow. Combining these properties with increased corrosion protection and the thin film application technique, maximizes thermal transfer capabilities. Effective on Brakes, Intake
Manifolds, Cylinder Heads, Oil Pans, Radiators, Intercoolers and more.
"


with that said, we decided to start with a tmic off of an 02 wrx. i got two things accomplished; baselining some temps from an uncoated tmic, and got the tmic sandblasted and coated with thermal dispersant. i'll post up my baseline temp points soon.



Justin
Commercial web address removed



some pics

andy97

iTrader: (1)

You're going to get banned for unauthorised advertising

silent running

Interesting nevertheless.

GrimmSpeed

i apologize if posting some stuff we were screwing around with is not welcome here. i'm not pushing to sell it i just thought it was interesting because there really isnt much data out there for it.

if a mod/admin thinks this is wrong please pm me before you close the thread or ban me...i'm not a scammer...just trying to branch out from ALWAYS being on nasioc.


Justin

silent running

Well keep at it. I'm reading it. I'm fed up of shiny intercoolers anyway.

Britishdaddy

i think you should just hammeright it great stuff good for any and every surface





BUT WHAT DO I KNOW HA HA HA

GrimmSpeed

hammerright?

ricardo

He means Hammerite Worldwide (black paint intended for metal)

silent running

Yes Hammerite is OK. I wonder if black fire surround paint might do the job?

The rookie

iTrader: (1)

You want matt black, so if you use hammerite, don't get smoothrite, otherwise I can't to be honest see much benefit in a specific paint, still my TMIC is black as stock anyway!

Simon

GrimmSpeed

baseline results. in retrospect i would have done more start and stop to see how quickly the IC gets cooled after heatsoak because this is where i think it would be most effective. these are baseline uncoated results.

kellogg, 11th and maryland are about a mile apart. i should have done alot more driving and less idle temp taking.

looks like you'll have to click this image since its shrinking it.

silent running

So are you measuring charge temp here? Or the temp of the intercooler exterior?

GrimmSpeed

these baseline temps are from the core temp. i stuck the probe on the center surface of the intercooler. i understand we'll need to get the charge temp as well but i want to do prelim testing to see if the stuff even works first.

sl1000

The problem with heat coatings and transfer is it always works two ways.

So if the coating works really well it will increase the amount of power it can transfer to the air. But also the amount of power air can transfer to the intercooler.

or it will loose its temperature quicker when driving after heatsoak, but it will also go up quicker when standing still.
the overal effect will be limited for these situations.

By the way most probably the coating helps due to its blackness and roughness (thereby increasing the surface)

also make sure you measure ambient and charge temps for good before and after comparison.

ricardo

How about coating exactly half the intercooler ? Then you could put a probe towards the end of each half, and see what differences there are.

I realise that the two halves will effect each other to some extent, but any other way of doing it will have many more variables by the time you've swapped from an uncoated to a coated unit or vice versa.

GrimmSpeed

ok so i have some more raw data here from testing. i'd say i'm pretty happy with the results. i believe i see a high of 26% cooler temps in the data. ambient temps were very similar to the other night of testing.



raw data snapshot




Driving portion of test. Blue is coated, pink is uncoated.




First 1/3 car idle after getting back to the shop. last 2/3 car sitting off. Last data point is 21 minutes after the car was shut off.




Raw snapshot of the whole shabang, driving, sitting, idling, and off together.



Justin

GrimmSpeed

sorry, already coated the entire thing. we now have uncoated vs. coated results of core temps.

silent running

Looks good so far. I think as someone mentioned already, it's a two way street. Being able to radiate heat better also means it can absorb heat better. At a guess, on a TMIC you'd want the black on the top side and mirror finish on the bottom face to give you ideal characteristics. I'm currently mulling over what to do with my inlet manifold which is coming off quite soon. First off I'm planning some insulating spacers to keep heat transfer from the heads down. But whether to paint it, I don't know. If I paint it black, it will radiate heat off but also absorb it from the block and head. Overall I think it will absorb more than it loses through being black. I wonder if white might be better?