wrapping cold air intake - Page 2 - Forums at Modded Mustangs
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post #21 of 29 Old October 13th, 2011, 11:06 AM
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Quote:
Originally Posted by cschoening09 View Post
excellent point lol. i think everyone is overthinking this subject instead of thinking locigally.
I may be overthinking it, but...

You seem to be thinking of the heat transfer through the mode of conduction, which would be more time dependent.

In reality, it is more likely forced convection driven. Basically air driven through a hot pipe, which is transferring heat to the flow.

Q = h A dT where Q is net energy, h is heat transfer coefficient, A is surface area, dT is difference in temperatures.

For forced convection internal flow, h = (k/dh) 0.023 Re^0.8 Pr^0.4
k is thermal conductivity of fluid (air), dh is hydraulic diameter, , Pr is Prandtl number, and Re is Reynolds number.

Re = (pVd/u) where p is density, V is mean velocity, d is diameter, u is viscosity.

So if you wade through all that nonsense, net energy transfer is proportional to velocity. The faster the air moves, the more heat it actually transfers.

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post #22 of 29 Old October 13th, 2011, 11:55 AM
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Fluid dynamics......FTW!

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post #23 of 29 Old October 13th, 2011, 12:59 PM
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I hate that I understand all that..... Why can't I just be normal?

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post #24 of 29 Old October 13th, 2011, 01:45 PM
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Originally Posted by MustangMatt96GT View Post
I hate that I understand all that..... Why can't I just be normal?
Because you were stupid and took engineering courses?


Better analogy for the intake;
What cools off your soup faster? Air moving slowly over it, or air moving quickly?
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post #25 of 29 Old October 13th, 2011, 06:26 PM
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So, without taking the time to do the calculations, if a fixed CFM is flowing through a heated pipe, will a larger pipe produce a larger net transfer of heat due to the increased surface area or a decrease as a result of the reduced velocity......or is it a wash?

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post #26 of 29 Old October 30th, 2012, 05:21 PM
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if your just wrapping your intake I wouldnt go and spend like 50 bucks on the mishimoto heat wrap, unless of course your already getting it for your exhaust or headers and have some left over. But spending 15 bucks on some reflective heat wrap from Autozone or wherever isnt that bad of an idea.

The air is gonna pick up minimal heat from the tube but its still some. Plus the heat shield getting hot from being in the engine bay all day and will heat up the air some.

I had my K&N intake wrapped and used it to cover my heatshield and cover up any holes between it and the interior of the engine bay. The tube was definitely much cooler wrapped than when it wasnt which will give very minimal gains, but its something

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post #27 of 29 Old October 30th, 2012, 05:40 PM
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A cai doesn't do shit for our cars anyway. The stocker already is a cai. With a more gradual bend.
A the whole heatsoak argument is mute unless the car is parked,and even then there is so much air being sucked through I doubt very much the iat elevates more then a degree or 2.
Stop thinking so much.

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post #28 of 29 Old July 31st, 2017, 03:13 PM
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Originally Posted by slowgtstang03 View Post
Would wraping intake be worth it? i know it picks up a decent amount of heat the travel threw the engine bay. But is it enough to wrap it.
Okay, okay, I'm a RICER. However, my intake pipe temp from intercooler to throttle body temp has decreased a lot. It's most at luke warm to medium. It is not a overly expensive to wrap it up. Anything to cut down air temp is worth my time.
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post #29 of 29 Old August 4th, 2017, 08:53 AM
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Are you purposely bringing up threads that have been dead for years?

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