Cooling down aluminum using cold materials.
Cooling down aluminum using cold materials.
(OP)
I have a racing engine that is air-cooled. It operates most efficiently when it is cool (250 degrees Fahrenheit. When it exceeds 300 degrees Fahrenheit, performance begins to fall drastically. It has an aluminum engine mount. By the end of a 20 minute session, the mount is heat soaked from all of the heat that is absorbed. I am going to redesign this mount so I can insert a frozen (via dry ice) object into a cavity within it. I was thinking of steel.
My question is : Which material can be most useful in storing the most possible Coldness (pardon my hacking of your technical jargon)so as to reduce the overall temperature of this engine mount for up to 40 minutes.
Thanks for your help!
STEWFOO
My question is : Which material can be most useful in storing the most possible Coldness (pardon my hacking of your technical jargon)so as to reduce the overall temperature of this engine mount for up to 40 minutes.
Thanks for your help!
STEWFOO





RE: Cooling down aluminum using cold materials.
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RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
Total race time?
How long before the engine heats up to what would be "good" (adequate or useable) temperature? (Include typical practice and starting and waiting times, please?)
How long during the race does it take to get the engine "too" hot?
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
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RE: Cooling down aluminum using cold materials.
Why not have the inlet cooling air flow around the solid CO2 via a 3 ounces of sheetmetal duct and a hand-operated/radio-controlled air bypass damper to divert colder air to the outside of the oil tank?
Flip the damper when temperatures get too hot, get another two or three laps of cooler temperatures ... until the CO2 sublimates away.
RE: Cooling down aluminum using cold materials.
I think you need to be realistic about this. People have been trying to game these sorts of things for nearly a century, and most of them are not any less intelligent than you. If they did succeed, it was not for the lack of trying or technology. Every possible way of doing something has a cost or trade-off. Whatever you are using now is probably as good as it gets.
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RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
.24 * 5 * 300 = not enough BTU to be significant in light of the total heat rejected by an air-cooled engine and the dominant paths of heat rejection.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
But really, using energy storage to cool a racing engine instead of improving the radiator is silly. Put any extra mass in increasing radiator area or air flow.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
Maybe you can use "heat pipe" technology to get some more surface area for cooling at high temps. Depending on the rules and interpretation thereof, you might be able to argue that it is still just "air cooled."
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
RE: Cooling down aluminum using cold materials.
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