Containerized Dry Cooler (20HQ / 40HQ)

Coil, fans, pipework fittings, valve sets and the control panel are installed and wired in the works, pipework is pressure tested, and fans and control circuits are run up on power, with inspection completed and recorded before dispatch. For shipment, pipe openings are capped and electrical items protected against moisture, with loose items and documentation crated. What remains on site is placement and fixing, connecting the inlet and outlet pipes, connecting power and signal cables, and commissioning. This division of work leaves most of what commissioning would expose inside the factory rather than on the project site.

With units in a row, intake clearance decides whether hot-air recirculation appears — packed too closely, downstream units draw the air the upstream units have just discharged and real capacity falls below the selection. Support height has to leave enough free area for intake while still allowing pipework beneath to be routed and serviced. Access routes, handrails and ladders across the array follow how the operating team actually works. Structural load, deflection and holding-down are checked against unit weight and site wind load, and the fixing method between unit and structure is confirmed on the interface drawing. All of this is settled once at layout stage; changing it after the units arrive is expensive.

With a liquid-cooled compute container, the dry cooler rejects heat on the primary side while the CDU inside handles the secondary and device side; what has to align is supply and return temperature, flow and pressure drop. With a BESS enclosure, what has to align is the battery thermal management system's inlet and outlet conditions and the enclosure penetration positions. Where ETENZ takes both the enclosure and the associated equipment, both sides are aligned on the same drawing set, and the piping and electrical connection between the unit and the interface point are in the supply scope; process-side piping, circulation pumps and water treatment beyond that point sit with the project or are agreed separately. Interface position, elevation and pipe size are fixed once at drawing approval.

The transport advantage of the standard box holds at the lifting stage as well: lifting points follow the corner castings, sling angles and lifting gear are given on the general arrangement drawing, and lifting the unit whole needs no additional bracing. Road movement uses a standard trailer and sea freight books as an ordinary box. On arrival, foundation inserts and leg positions are checked against the drawing, and level is controlled during placement — vent and drain points work by elevation, and a tilted unit will not vent cleanly. A later relocation follows exactly the same sequence.