painting the FMC black, would the air get hotter?
05-11-2010, 11:26 PM
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painting the FMC black, would the air get hotter? Well im currently in the process of building an f1c fbody. i want a hurge front mount intercooler. the thing is that i dont want the front mount metal looking thing in front of the car to be so noticable when im driving or when someone is looking at the front of my car.
i was thinking a light coat of dust black (flat) black spray paint couldnt hurt. any opinions?
i was thinking a light coat of dust black (flat) black spray paint couldnt hurt. any opinions?
05-12-2010, 12:03 AM
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yes it will.
not by much, but it will still loose some efficiency
i have seen people do this, after a while when you on the highway, from time to time a small rock hits the intercooler and takes the black paint off, and then it looks like ****
not by much, but it will still loose some efficiency
i have seen people do this, after a while when you on the highway, from time to time a small rock hits the intercooler and takes the black paint off, and then it looks like ****
05-12-2010, 03:40 AM
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My dad actually owns a ceramic coating/ powder coating biz that ive spent a few years working in now. Different materials have different applications; there are thermal barriers which can be used on exhaust, as well as thermal dispersants. By sand blasting the surface of an intercooler, you can actually double the amount of surface area it has, a flat surface looks like __ <-- that flat spot there. if you profile it, on a microscopic level its goes from _ to /\ effectively increasing surface area. Spray a thermal dispersant on it that has a higher heat transfer rate, and it will actually improve efficiancy by shedding heat faster. This can be done at shops in black... not really what you had in mind, but another option. We do it on rear end housings, transmission casings, radiators/ intercoolers etc.
But uh... if you just spray black paint on it, you might lose a teeny bit of cooling. Nothing huge.
05-12-2010, 06:35 AM
#7
Depending on what you paint it with....
My dad actually owns a ceramic coating/ powder coating biz that ive spent a few years working in now. Different materials have different applications; there are thermal barriers which can be used on exhaust, as well as thermal dispersants. By sand blasting the surface of an intercooler, you can actually double the amount of surface area it has, a flat surface looks like __ <-- that flat spot there. if you profile it, on a microscopic level its goes from _ to /\ effectively increasing surface area. Spray a thermal dispersant on it that has a higher heat transfer rate, and it will actually improve efficiancy by shedding heat faster. This can be done at shops in black... not really what you had in mind, but another option. We do it on rear end housings, transmission casings, radiators/ intercoolers etc.
But uh... if you just spray black paint on it, you might lose a teeny bit of cooling. Nothing huge.
My dad actually owns a ceramic coating/ powder coating biz that ive spent a few years working in now. Different materials have different applications; there are thermal barriers which can be used on exhaust, as well as thermal dispersants. By sand blasting the surface of an intercooler, you can actually double the amount of surface area it has, a flat surface looks like __ <-- that flat spot there. if you profile it, on a microscopic level its goes from _ to /\ effectively increasing surface area. Spray a thermal dispersant on it that has a higher heat transfer rate, and it will actually improve efficiancy by shedding heat faster. This can be done at shops in black... not really what you had in mind, but another option. We do it on rear end housings, transmission casings, radiators/ intercoolers etc.
But uh... if you just spray black paint on it, you might lose a teeny bit of cooling. Nothing huge.
I always wondered about the Thermal dispersant type coatings. i readoa hot rod mag artical (online) about coatings and they mentioned these thermal pispersant coatings. I guess if they use a material with a VERY high rate of heat transfer then that should help pull more heat out the intercooler or rad. How much dose the coating cost inc sandblasting? how much for doing a transmission case? are there any other areas it could be used, maybe the block itself?..... how about on the cold side of a turbo? or the casing of a SC? how about inside water and oil ways in the engine (to help get the ehat out the block)?
Chris.
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05-12-2010, 06:50 AM
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+1
From a heat transfer perspective the heat will have to transfer from one material to another (alum. to paint) by conduction and then out of the paint via convection. This loss will be offset by the fact that the radiant heat transfer will be MUCH better with the black coating. either way your talking about a very small difference in overall thermal coefficient.
If you want it black paint it black it’ll be fine. They make special paint for radiators, or maybe one of those coatings mentioned earlier in the post
From a heat transfer perspective the heat will have to transfer from one material to another (alum. to paint) by conduction and then out of the paint via convection. This loss will be offset by the fact that the radiant heat transfer will be MUCH better with the black coating. either way your talking about a very small difference in overall thermal coefficient.
If you want it black paint it black it’ll be fine. They make special paint for radiators, or maybe one of those coatings mentioned earlier in the post
05-12-2010, 04:32 PM
#10
I haven't had any chip off either, but I do run a coarse screen over the FMIC opening area to prevent big stuff from coming in.
Jim
05-13-2010, 10:50 PM
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a guy once told me about getting a very large set of panty hose and pulling them over the IC before installing it. idk if it actually works. i figured it would restrict air flow.
05-13-2010, 11:02 PM
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My powder coater actually told me that they have a new powercoating or special paint that actually helps the intercooler with heat disapation and protects the intercooler at the same time from oxidizing or corroding
05-14-2010, 07:09 AM
#13
Depending on what you paint it with....
My dad actually owns a ceramic coating/ powder coating biz that ive spent a few years working in now. Different materials have different applications; there are thermal barriers which can be used on exhaust, as well as thermal dispersants. By sand blasting the surface of an intercooler, you can actually double the amount of surface area it has, a flat surface looks like __ <-- that flat spot there. if you profile it, on a microscopic level its goes from _ to /\ effectively increasing surface area. Spray a thermal dispersant on it that has a higher heat transfer rate, and it will actually improve efficiancy by shedding heat faster. This can be done at shops in black... not really what you had in mind, but another option. We do it on rear end housings, transmission casings, radiators/ intercoolers etc.
But uh... if you just spray black paint on it, you might lose a teeny bit of cooling. Nothing huge.
My dad actually owns a ceramic coating/ powder coating biz that ive spent a few years working in now. Different materials have different applications; there are thermal barriers which can be used on exhaust, as well as thermal dispersants. By sand blasting the surface of an intercooler, you can actually double the amount of surface area it has, a flat surface looks like __ <-- that flat spot there. if you profile it, on a microscopic level its goes from _ to /\ effectively increasing surface area. Spray a thermal dispersant on it that has a higher heat transfer rate, and it will actually improve efficiancy by shedding heat faster. This can be done at shops in black... not really what you had in mind, but another option. We do it on rear end housings, transmission casings, radiators/ intercoolers etc.
But uh... if you just spray black paint on it, you might lose a teeny bit of cooling. Nothing huge.
So you man a miror smooth finish as this provents air 'sticking' to the intercooler and ensures the air acutally travles ove rthe IC material not the air 'sticking' to it.
Chris.
05-14-2010, 08:42 AM
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the other problem i see with a none flat surface is you actually end up with a very thin layer of air between the metal and the moving air. This would REDUCE the efftiveness of the intercooler.
So you man a miror smooth finish as this provents air 'sticking' to the intercooler and ensures the air acutally travles ove rthe IC material not the air 'sticking' to it.
Chris.
So you man a miror smooth finish as this provents air 'sticking' to the intercooler and ensures the air acutally travles ove rthe IC material not the air 'sticking' to it.
Chris.
05-17-2010, 01:02 PM
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as long as you only paint the front and not the inside of the fins, the forward facing edge of the fin doesnt really cool much, its the air running thru along the fin that pulls the heat out.
05-17-2010, 05:10 PM
#18
Small sacrifices need to be made for a street car. I'd rather loose a little cooling and know that my setup is much harder to see. It will draw less attention from police and thieves. I prefer sleepers.
On the other hand some people like attention by having ridiculously loud exhaust, 5in cowl hoods and shiny stuff everywhere.
It's a matter of taste and what kind of machine you're building.
On the other hand some people like attention by having ridiculously loud exhaust, 5in cowl hoods and shiny stuff everywhere.
It's a matter of taste and what kind of machine you're building.
05-17-2010, 11:07 PM
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Small sacrifices need to be made for a street car. I'd rather loose a little cooling and know that my setup is much harder to see. It will draw less attention from police and thieves. I prefer sleepers.
On the other hand some people like attention by having ridiculously loud exhaust, 5in cowl hoods and shiny stuff everywhere.
It's a matter of taste and what kind of machine you're building.
On the other hand some people like attention by having ridiculously loud exhaust, 5in cowl hoods and shiny stuff everywhere.
It's a matter of taste and what kind of machine you're building.
i agree.
