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oldcorollas
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Kita-Ku, Sapporo, Japan
Registered:
January 2003

Re: thoughts on barrel coolers???

Sun, 06 February 2005 11:40

680OST wrote on Fri, 04 February 2005 13:14

But looking at those figures from joshstix, I will be trying the water on its own, then going to water and glycol, and lastly there is a new product on the market called water wetter,

I just hope the water actually stays cool, as yes, it may keep the intake charge cooler, but will be a lot harder to keep cool, or get cooler again once it gets hot.

well.. ethylene glycol (your average green radiator stuff) is actually pretty close the ethanol in makeup.. it just has an extra OH group (so there are two, not one, on the 2 carbon chain...) whereas ethanol will lower the freezing point of water, ethylene glycol will also raise the boiling temperature in addition to lowering the freezing point.

again, ethylene glycol has a lower heat capacity than water, so don't go overboard with it.. you only need to add enough to stop the water either freezing or boiling..

have you measured the temperature of the fluid as it enters and leaves the barrel cooler? if the fluid is not heating up by the end of the barrel, then it's a lack of heat transfer problem, which is a function of the coolers surface area AND the thermal conductivity of the fluid. if the fluid is very hot, then you have a lack of heat capacity problem, which is just a fluid problem. faster rate of fluid flow will not help the first problem, but will assist on the second.

you can use any dodgy outdoor digital thermometer, or if you want to get nifty, a ADC datalogger and some LM35CZ (or DZ) precision temp sensors will be noice..

oh, and watter wetter has been around for yeeeeaaars Wink

aiui it alters the surface tension of the fluid, and results in greater fluid contact with all the nooks and crannys in your motor, and also decreases the possibility of local bubble formation at hotspots.. this could be an answer, but i think you should monitor the temperature before and after the barrel, and also before and after the radiator. Cya, Stewart

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