[Fot] Aluminum Radiators

[Philip Gott]

For a while, one of the chemical companies was advocating plastic radiators. They even had some on display at an SAE conference.  Apparently they tested well.  Their argument was that the important factor was the net water to air heat transfer, and that the limiting things were the water to radiator material and then the radiator material to air, not the radiator material itself, as I recall. They said they could mold a radiator into unusual shapes that would enable better vehicle aerodynamics with more design freedom in the front end….
Never went anywhere to my knowledge.
Phil Gott


Sent from my iPhone

> On Jan 4, 2022, at 6:46 PM, rek46 via Fot <fot at autox.team.net> wrote:
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> There is no solder in the fin to tube transfer.....the tubes are a Brazed alum. that is 7 to 12 percent outer layer of Silicon...depending on whether it is for one side or 2....these ingots are mated together (1 or 2 side ) with the original 3000 series base ingot ...So you have a base ingot (about 20") and one or 2 outer ingots(about 2' to 3' per side as spec req.required) stacked up to get your  one or 2 side outer layers... Then they are hot rolled on a reversing mill to several passes to get thin er gauges...which next goes to some 4 stnd cold rolling mills. to get down to about .80 ...this is now ready to ship to finishig mill....which then will take about 8 passes to get down to about .006 to .004"....during this process ,you may need to inter-anneal at certain passes,to end up with H-19  to H -0 TEMPERS for forming ,etc.  dependent on customers finish processes, and customer requierments (many)....This is non technical info as req. by secrecy agreements....BTW...Fin stock is run seperate ly ,and produced to .003" ish   to . 0045" ish,plus specials for other reqs........rick
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> In a message dated 1/4/2022 5:24:23 PM Eastern Standard Time, fot at autox.team.net writes:
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> This is informative….
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> What material makes the better Radiator: Aluminum or Copper?
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> https://www.motormouthradio.com/blog/118-what-material-makes-the-better-radiator-aluminum-or-copper
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> An Aluminum or Copper Radiator for Your Car - Car Craft Magazine
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> https://www.motortrend.com/how-to/ccrp-0211-aluminum-or-copper-radiator-for-your-car/
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> On Jan 4, 2022, at 12:56 PM, TeriAnn J. Wakeman via Fot <fot at autox.team.net> wrote:
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> On 1/4/22 11:50 AM, dustin nicholson via Fot wrote:
> I read an interesting article once that said while brass/copper out performs aluminum, an aluminum radiator will dissipate heat better than brass radiators because of all the leads solder in the seams of the brass. Lead holds the heat and therefore offsets the advantage of the brass. Seems like reasonable logic but I can’t substantiate it.
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> Why aluminum radiators are better than bass:
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> Thermal conductivity Btu/(hr.ft  degrees F)
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> brass (stock radiators) -  83 degrees
> Aluminum (radiators) - 126
> copper - 218
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> cast iron - 27.7
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> TeriAnn
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