Cooling Idea

[tigerpaws]

for those people that are running watercooled lasers..

has anyone tried swoping the water for 70% food grade Propylene glycol 30% de-ionised water

it has better thermal properties than just water alone .. and it drops the freezing point of water to something like -20*C

alan

[trwalters001]

I used to use 100% ethylene glycol to cool my CO2 laser. One end of the tube was at high voltage and had the cooling liquid on it too. Made a good insulator.

[Xytrell]

... it drops the freezing point of water to something like -20*C

You know your chiller is too big if you need that kind of protection

[mixedgas]

for those people that are running watercooled lasers..

has anyone tried swoping the water for 70% food grade Propylene glycol 30% de-ionised water

it has better thermal properties than just water alone .. and it drops the freezing point of water to something like -20*C

alan

Done in medical lasers, watch out for bacteria and corrosin with some materials.

Steve

[GooeyGus]

I'm rather wasteful and don't bother to re-circ my water. I would need a huge chiller to be able to do so, so I just make one pass and then down the drain. No need for fancy water!

However, I do have a small co2 laser on the way so I might use some fancy water for that setup.

[tigerpaws]

i was just wondering. I seems like a lot of people just use water when from an efficiency point of view it would make sense to use a cooling medium. Considering the costs of high power lasers

[Laser Zone]

I would use a big block radiator .

[Doc]

When I used to be involved with motorsports we used a product called "Water Wetter" to improve the connection between the coolant and the cooling system. It did have a noticable effect.

http://www.redlineoil-europe.com/coolants/product.asp?product=WaterWetter%AE_00027

[Xytrell]

I think tap water averages 0.2¢/gal. You'd probably end up spending more trying to run a chiller.

[daedal]

I thought it isn't so much the cost as much as it is the dirt and minerals in tap water... hence the deionized H2O...

--DDL