Line interfaces: Design input
List each process exchanger, the required supply and return temperatures on the utility side, and which loads run together. Name fluid composition, outdoor design conditions, three-phase supply, connected load, footprint and upstream/downstream interfaces. Representative production samples should describe the heat-rejection profile, not a hydrogen gas sample this desk can test. If the process side needs isolation, double-wall exchangers, specific alloys or classified installation, those requirements belong in the buyer’s engineering package before factories quote a utility skid.
Supplier answer
Ask each factory to confirm cooling capacity and pumping performance at the stated secondary-loop conditions, and who supplies pumps, reservoir and loop controls. A packaged outdoor selection that lists process-fluid temperatures separately from ambient air is a useful reference pattern; it still does not prove hydrogen-side materials. The answer should attach connected load, supply frequency and any restrictions at low load or extreme ambient. For hydrogen duty, the specialist supplier and project engineer — not this sourcing desk — verify isolation, leak response and installation classification at the process interface.