Liquid cooling - need advice.

[Armand-[79th]]

I'm designing a liquid cooling system.
I work for a vehicle repairs company.

I'm wondering what would be useful, what would be practical and most importantly.. what would be safe.
I've heard a few nasty things about using anti-freeze but I'm sure that can be solved.

Any suggestions/ideas?

 

[Armand-[79th]]

Cheers mate..
I think I might go for an air-conditioner.
It's a lot easier to install.. all I need is a de-humidifying air-con unit and some ducting.
Not like I really need to go sub-zero.