Water cooling information

[ReddyWatts]

Water Flow
Water moving through a motor cooling sleeve meets resistance at the walls; this causes the water at the walls to move more slowly than the water in the center of the tube: this is Laminar Flow.
Laminar flow is bad for heat exchange because the water against the vessel’s walls is slower than the water in the center. Flow rate at the heat exchange surface has diminished.
This is where turbulence comes in - if we can get fluid from the center of the vessel to mix with fluid toward the walls, we end up with more efficient heat removal. Turbulence increases heat transfer significantly over slower Laminar flow.

So, in short moving water through the motor cooling sleeve faster improves heat transfer between the motor and the water, which reduces the temperature differential between the motor and water required to move an amount of heat.
It is NOT intended to reduce the temperature increase in the water as it travels through the motor cooling sleeve, but rather to allow more heat to be removed.

Faster flow means more turbulence, and that is a good thing.


I really like the design on the inside of these jackets.

[LOVE6S]

I bet those cans in the pic were alot of money, can those or anything like them be purchased?

[LOVE6S]

I have a 45mm motor, there is not alot of cooling jackets around for it, I was gona wrap copper tube around it and tack it with JB weld, would this give me enough cooling? Sorry a little off topic, dont mean to disrupt thread, Shawn.

[ray schrauwen]

We are cooling the motors, not heating water so get the water flowing fast as possible thru the system.

So then, let it flow, let it flow!

[ray schrauwen]

I bet those cans in the pic were alot of money, can those or anything like them be purchased?

Made by "ETTI" I think...

[ray schrauwen]

New cooling fluids out of Germany!

http://ca.news.yahoo.com/german-scientists-concoct-coolant-electric-cars-160458347.html

[martin]

If you use a coiled pipe your suppose to use a thermal compound between the pipe & motor so it fills the gaps between each coil & the motor can to give better heat transferance.

[ray schrauwen]

....and just an FYI, thermal compounds are carcenogenic. Nasty stuff but, keeps it all cool.

[martin]

Ray i dont think the stuff my local electronics store here in the UK sells is.

[LOVE6S]

I got some thermal transfer past for some esc's I am working on, but this stuff you are talking about would have to turn solid when dry, I dont know where to get that?

[Alexgar]

Thermal epoxy? I bought from frys

[martin]

Go to www.fastelectrics.net & then click on watercooling in the list at the top left of page, the idea is to fill the air gap between the radius of the coils.

[LOVE6S]

Thermal epoxy? I bought from frys

Can I ask what fyrs is?

[LOVE6S]

Go to www.fastelectrics.net & then click on watercooling in the list at the top left of page, the idea is to fill the air gap between the radius of the coils.

Thank you very much.

[Alexgar]

Frys electronics is a computer store like best buy google it its pretty cheap