Naw, it's still a blower. In a 1U system you're pretty limited for space, and also putting liquid cooling in a datacenter can be dangerous -- there's a lot more than just one server that can be damaged from a leak!
Temps are better in the datacenter though, since there's better airflow compared to an idle room.
You can mount the liquid cooler outside of the case if you really need to. Either way, nice setup buddy! If i cashed out my steem at the top I could have built a setup like that lmao. oh well maybe next run!