I have a Koolance fan on my CPU rad in my computer, and it's a monster. By far the most CFM I've ever seen in any fan (but it's friggin noisy). If this thing is supposed to be 24W, I think it might actually rip a whole in the fabric of the universe with it's airflow.
EDIT: Should also mention, that I agree with needing a fan grill. I have gotten my finger jammed in my Koolance and it took a far chunk of skin off.
Intel Core i7 930 @ 3.6GHz with HT on @ 1.17V - 8GB OCZ Extreme DDR3-1333 @ 7-7-7-18 timings (still tuning) - Gigabyte X58A-UD3R - Intel X58 Chipset - Sapphire Radeon 5870 Vapor-X Rev.2 - Gigabyte GeForce GTX285 for PhysX - Gigabyte Odin Pro 800W - 2x WD Green 1TB in RAID - Windows 7 Professional - Onboard Realtek 889 HD Audio