1. A facility comprising:a water cooling subsystem;
a water desalination plant operably coupled to and configured to receive and desalinate output warm water from the water cooling system; and
a multi-lumen conduit comprising a fluid conveying structure comprising:
an intake lumen comprising an intake opening positioned in an ocean or sea and configured to receive cool water from the ocean or sea and convey the received cool water to the water cooling subsystem; and
a discharge lumen operably coupled to the water desalination plant and comprising a discharge outlet configured to discharge a produced warm fluid from the water desalination plant into the ocean or sea, wherein the discharge lumen is positioned at least partially within the intake lumen,
wherein the facility is a power plant or a data center comprising a server farm.