[Tigers] Tiger Cooling

[AC SunbeamTiger]

>From the Engineering Toolbox website. Thermal conductivity (k) is the quantity
of     heat transmitted, due to unit temperature gradient, in unit time under
steady conditions in a direction normal to a surface of unit area.

MetalTemperature
            - t -
(oF)Thermal           Conductivity
            - k -
(Btu/(hr oF ft))Admiralty Brass6864Aluminum, pure68118200124400144Aluminum
Bronze6844Antimony6810.7Beryllium 68126Beryllium
Copper6838Bismuth684.9Cadmium6854Carbon Steel, max 0.5% C6831Carbon Steel, max
1.5% C682175219219217Cartridge brass (UNS C26000)6869.4Cast Iron, gray7027 -
46Chromium6852Cobalt6840Copper, pure682235722131112204Copper bronze (75% Cu,
25% Sn)6815Copper brass (70% Cu, 30% Zi)6864Cupronickel6817Gold68182Hastelloy
B
6Hastelloy C705Inconel70 - 2128.4Incoloy32 - 2126.8Iridium6885Iron, nodular
pearlitic21218Iron, pure684257232183220Iron,
wrought6834Lead682057217.2Manganese
Bronze6861Magnesium6891.9Mercury684.85Molybdenum6881Monel32 -
21215Nickel6852Nickel Wrought32 - 21235 - 52Niobium
(Columbium)6830Osmium6835Phosphor bronze (10% Sn, UNS
C52400)6828.9Platinum6842Plutonium684.6Potassium6857.8Red
Brass6892Rhodium6886.7Selenium680.3Silicon6848.3Silver,
pure68235Sodium6877.5Stainless Steel687-26Tantalum6831Thorium6824Tin3236 -
39Titanium6811 - 13Tungsten6894 - 100Uranium6814Vanadium6835Wrought Carbon
Steel3234Yellow Brass6867Zinc-67Zirconium-145T(oC) = 5/9[T(oF) - 32]1 Btu/(hr
oF ft2/ft) = 1 Btu/(hr oF  		ft) = 1.731 W/(m K) = 1.488 kcal/(h m oC)

> From: CoolVT at aol.com
> Date: Wed, 21 Mar 2012 12:58:10 -0400
> To: Theo.Smit at dynastream.com; tigers at autox.team.net; dave at munroe.ca
> Subject: Re: [Tigers] Tiger Cooling
>
> Theo,
> I agree with directing the flow through the radiator and blocking the
> proper areas. I have done everything that you've done in that area.
> In regards to the type/material of the radiator.  I was at a show  recently
> where a radiator supplier (all aluminum models) had about 100 rads on
> display. Most were ready  made for certain cars. I was impressed because
the
> prices looked awfully good.  He said they could make up any  configuration
> that someone would want. I asked how much more efficient aluminum  would be
> over brass for the same size. He said about 25%.  I said that I  thought
the
> brass would be a better conductor or heat and therefore more  efficient.
He
> said "no".  He said you put your hand on a brass  radiator after a hard run
> with a car and you'll burn your hand.  Do the  same with an aluminum and it
> will feel cool. This, in his mind, was saying that  since the al. felt
cooler
> that it was dissipating  heat better than the  brass.  I came to the
> conclusion that he was probably not someone i would  want designing a
radiator
> for
> a Tiger.
> Mark