COOLINGCONTAINER.ME REV P2
REV P2 — ENGINEERING PACKAGEESTIMATE FLAGS PENDING VENDOR SELECTION

40 ft High-Cube GPU/HPC Liquid-Cooling Container

Full-liquid W45 direct-to-chip (fanless) · two-loop · 3× ground-skid dry coolers — NVIDIA GB300 NVL72 · ~810 kW IT · 1 MW / 2 MWh BESS · 800VDC-ready · Permian Basin, TX.

100% liquidfanlessBESS on-skid
Request Rev P2 package → Read the spec ↓
Site — Permian Basin, TX101 °F DB / 67 °F MCWB · ASHRAE 0.4%~2,861 ft altitudeERCOT
02What this is

A containerized GPU/HPC
cooling module

Rev P2 engineering package for a containerized GPU data-center module. Full-liquid W45 direct-to-chip cooling — 100% liquid, fanless, no RDHx — is the default basis.

  • —Two loops isolated by a CDU plate heat exchanger; 3× ground-skid adiabatic dry coolers reject ~850 kW.
  • —On-skid 1 MW / 2 MWh BESS (default on) sited at 3.0 m; 800VDC-ready electrical provisioning.
  • —Climate basis: 101 °F DB / 67 °F MCWB (ASHRAE 0.4%), ~2,861 ft altitude, ERCOT.
Envelope40 ft High-Cubeoverhead tray/pipe zone retained
IT load~810 kW6× GB300 NVL72 racks
Rejection~850 kW3× adiabatic dry coolers
Storage1 MW / 2 MWhLFP skid @ 3.0 m · NFPA 855
03Specification

Locked design basis

Rev P2 · estimate flags pending vendor selection
GPU platformNVIDIA GB300 NVL72Blackwell Ultra · MGX 48U
Rack750 × 1200 × 2294 mm~1590 kg wet · floor rated 2000 kg/position
Rack power135 kW nom / 155 kW peakbusway to 192 kW
Quantity6 racks → ~810 kW ITsingle row, 900 mm pitch
Default modefull_liquid100% liquid · fanless · no RDHx (hybrid = legacy variant)
TCS loop40 / 52–55 °C1182 LPM (312 gpm) · DN125 header standard
FWS loop45 / 57 °C25% PG glycol · ~360 gpm
CDU — selectedCoolIT CHx1000 ×2N+1 · 2nd source Vertiv XDU1350
Dry coolers3× ground-skid adiabaticESTIMATE · N+1 in-module, N+2 at fleet
Heat balance~850 kWIT 810 + pumps ~12 + envelope ~6 + elec ~22 (ESTIMATE)
BESS1 MW / 2 MWh LFPdefault ON @ 3.0 m (NFPA 855) · ride-through ~141 min
PerformancePUE ~1.20design-day · annualized 1.15–1.25 · WUE 0.02–0.09 L/kWh
04Process

Two-loop W45
architecture

TCS — technology loop

DI / 25% PG to the rack cold plates — 40 °C supply, 52–55 °C return. 1182 LPM on a DN125 header.

FWS — facility loop

25% PG glycol — 45 °C supply, 57 °C return to the dry coolers.

  • —CDU plate heat exchanger isolates the loops: clean rack-side fluid inside, glycol outdoors.
  • —100% of board heat on liquid (default) — no residual-air RDHx branch, no fans.
  • —3× dry coolers reject ~850 kW; adiabatic trim only 100–300 hr/yr on RO water.
P&ID-101Two-loop W45 DTC liquid coolingRev P2
P&ID of the two-loop W45 direct-to-chip liquid cooling system showing TCS and FWS loops, CDU, dry coolers and pump skid
ISA P&ID. Red = TCS technology loop (DI water / 25% PG) · Blue = FWS facility loop (25% PG glycol). PSV-101 set 60 psig, PSV-201 set 75 psig; 2N VFD pump skid with glycol make-up.
05Layout basis

The ground-skid
change

WasRoof-mounted coolers600 mm rack
Now — Rev P2Ground-skid on adjacent pad750 mm rack · FWS through the rear side wall

The 40 ft High-Cube envelope is retained for the overhead tray/pipe zone. The end elevation shows the skid on grade beside the container with the FWS penetration.

A-101General arrangement — plan / front / endRev P2
General arrangement drawing: plan, front elevation and end elevation of the 40 ft container with rack row, CDU bay, electrical bay, BESS and three ground-skid dry coolers
GA, dimensioned and layered. Rack row R1–R6, CDU/pump bay, electrical bay, overhead headers, ground-skid coolers + rear-wall FWS penetrations. On-sheet clearance-check note and basis block.
12–13The problem · the comparison

The engineering problem nobody had solved

Earlier “liquid-cooled” servers were hybrid: cold plates on GPU/CPU only. Memory, NICs, NVSwitch, PSUs and VRMs still rejected heat to air → fans, perforated bezels, RDHx.

The unsolved problem: cool 100% of the board on liquid. NVIDIA’s Rubin answer: liquid to every chip via a single tray inlet/outlet → sealed front, no fans, 6U→2U.

Our original GB300 basis (~90% liquid + ~10% air → 6× RDHx) was that hybrid approach — at Rev P2 the 100%-liquid answer is the default.

Metrichybrid (legacy)full_liquid — P2 default
Architecture~90% liquid + air100% liquid, fanless
RDHx / fans6 / required0 / none
Liquid load729 kW810 kW
TCS flow · header1062 LPM · DN125 (std)1182 LPM · DN125
Total rejection~850 kW (heat balance)~850 kW (heat balance)
Front service aisle920 mm — FLAG1100 mm — OK

Removing the 180 mm RDHx opens the aisle 920 → 1100 mm — every clearance clears.

A-102Legacy hybrid GA — RDHx row, 920 mm aisle flagsuperseded
Legacy hybrid general arrangement showing the RDHx row and the flagged 920 mm service aisle
Legacy variant, kept for reference. The hybrid build retains its historical 920 mm / rear-aisle flags — one driver for the P2 default flip.
14Why it matters

Efficiency, water, noise

~2M gal/yrwater avoidedvs water-cooled (0.81 MW) — evaporative baseline ~2.6 M gal/MW/yr → near zero with warm-water closed loop + dry coolers
85+ dB → 0fan noise eliminatedfanless build — no server fans, no RDHx fans
1.15–1.25annualized PUE banddesign-day ~1.20 (ESTIMATE) — fan + chiller parasitics removed

Energy. ~4% cooling-cost cut per +1 °C loop temperature; >$4M/yr at 50 MW → order ~$65k/yr here (climate-dependent).

Claim language. “Closed-loop with minimal adiabatic trim” — never “water-free.”

15Energy storage

On-skid BESS —
default ON

Part of the Rev P2 basis: a 1 MW / 2 MWh LFP skid off the electrical end, sited at 3.0 m from the compute container per NFPA 855 (2026). Shown in the 3D model, GA, IFC and isometric; storage node + ride-through note on the single-line.

Two payoffs: ERCOT 4CP peak-shave / ancillary-services revenue, and thermal ride-through for the fanless default — there is no air fallback. Price = ESTIMATE.

1000 kWdischarge~full module load
2 MWhLFP capacityestimate
~141 minride-through@ 850 kW (~741 min cooling-only)
09Deliverable · electrical

Electrical
single-line

  • —Utility 480 V 3-ph → main breaker + metering → distribution switchboard.
  • —Branches: IT PDU-A / PDU-B, mech panel (pumps, cooler fans), aux / BMS.
  • —ERCOT 4CP / DR-curtailment interface.
  • —Total module ~0.97 MW (810 kW IT + ~162 kW cooling parasitics).
  • —Dashed FUTURE 800VDC block: rectifier skid + DC busbar corridor provisioned.
E-101Electrical single-line — 480 V 3-phaseRev P2
Electrical single-line diagram: utility 480 V to main breaker, distribution switchboard, PDU branches, BESS and future 800VDC block
480 V 3-phase assumed — confirm to utility. Protection/coordination, grounding, AIC ratings = PE scope. Busway 192 kW/rack position provisioned.
06–08 · 10Outputs · deliverables

What ships in the package

3D modelSTEP · STL · GLBvalid B-rep — fabricator / CAD-importable
2D drawings (DXF)GA · single-line · P&IDISA P&ID + block P&ID
BIMIFC4classified entities for coordination
Sheet setPNG · text · PDFpreviews · dumps · combined PDF
M-1013D model — build123d parametric assemblyRev P2
3D block layout of the container module: six GB300 racks, two CDUs, pumps, three ground-skid dry coolers and the BESS skid
Parametric assembly: shell, 6 racks, 2 CDUs + plate-HX, 2N pumps, two-loop headers + drops, electrical bay, 3 ground-skid coolers, BESS skid at 3.0 m. bbox X[−9358, 12192] · Y[−5119, 1519] · Z[−150, 2896] mm.
33/33valid B-rep solidsSTEP export, zero failures
IFC4coordination model33 classified products (29 geometric + spatial structure)
IFC classification — schema validation: 0 issues
EntityIFC class
IT racksIfcBuildingElementProxy
Plate-HX (CDU integral)IfcHeatExchanger
CDUsIfcUnitaryEquipment
FWS pumpsIfcPump
Dry coolersIfcCoolingTower
TCS / FWS headersIfcPipeSegment
Electrical gearIfcElectricDistributionBoard

Container interior = IfcSpace; floor/roof/walls = IfcSlab / IfcWall; BESS = IfcElectricFlowStorageDevice. Pset_ConceptBasis carries the Rev P2 basis: CDU CoolIT CHx1000, heat balance, future-proofing. Every shaped entity meshes with valid geometry.

11Engineering check

Clearance check —
every P2 check passes

The full-liquid default removes the 180 mm RDHx → front aisle 920 → 1100 mm. The legacy hybrid variant (./out_hybrid) retains its historical 920 mm / rear-aisle flags — one driver for the P2 default flip.

CheckTarget (mm)Actual (mm)Result
Electrical bay NEC 110.26 (480 V)10671500OK
IT front service aisle10671100OK
Overhead tray/pipe zone300346OK
Rear access (no RDHx)050OK
Length far-end spare≥02111OK
16Scaling

Fleet crossover:
shared pod wins at N ≥ 5

The self-contained 40 ft module is the product — scale a site by replicating it.

  • —Crossover (P2 basis): a shared utility pod wins at N ≥ 5 modules within a ~150 m piping radius — pooling recovers ~15–20% of MEP CAPEX (ESTIMATE).
  • —Beyond ~150 m the pooling savings die in installed pipe, pumping head (PUE creep) and glycol inventory.
  • —It flips back to self-contained where independent failure domains are worth more than the pooling saving.
  • —2-storey stacking is a further density lever (structural / seismic — future).
~150 m piping radius Shared utility pod CDU · pumps switchgear · BESS ground-skid dry coolers — N+2 at fleet Compute pod 6× GB300 Compute pod 6× GB300 Compute pod 6× GB300 Dry cooler Dry cooler Dry cooler FWS pooling · shared BESS · independent failure domains per compute pod
17Adopted · go-to-market

Productization & deployment

Deployment / commercial posture (Duos-validated) — concept-stage, flagged for the next phase; not engineered here.
Repeatable building blockFactory-built~90-day target · CAPEX or OPEX delivery
Physical securityControlled entryman-trap vestibule · 24×7 monitoring · leak detection · SOC 2
Power accessCo-site with utility / IPPERCOT 4CP + BESS for demand response
Domestic supply chainMade-in-USAmanufacturer-agnostic sourcing
18Honesty — risks & caveats

Do not
understate

The open ESTIMATE flags: dry-cooler count basis (3/module), CDU capacity-at-approach, BESS price, PUE band.

ESTIMATE FLAGS PENDING VENDOR SELECTION
  • No airNo air fallback in the full-liquid default: loss of coolant is an immediate thermal event → leans on 2N pumps, sub-60 s leak detection + auto-isolation, ~141 min BESS ride-through and a defined trip.
  • Hydraul.Higher TCS flow & head (1182 LPM, DN125): rack ΔP and pump head to re-confirm — hydraulic model out of scope.
  • Rubin>190 kW/rack is a separate capacity axis (busway to 192 kW, floor 2000 kg/rack already in basis), not a coolant-temperature risk.
  • BESSSeparation locked at 3.0 m (NFPA 855, 2026); PCS protection remains PE scope; price = ESTIMATE.
  • StampsNo PE stamp, no protection coordination, no fire/life-safety design.
19Summary & next steps

Unified basis. All-green checks.

  • —Rev P2 unified basis: 100%-liquid fanless default, 3 dry coolers, CoolIT CHx1000 selected, BESS on-skid at 3.0 m, 800VDC-ready.
  • —Closed heat balance (~850 kW) and an all-green clearance check in the default build.
  • —Fleet path documented: self-contained module is the product; shared utility pod wins at N ≥ 5 within ~150 m.
Next
  • 01Vendor selection run — dry coolers + CDU at 101 °F + altitude.
  • 02Hydraulic / thermal model · Fusion refinement · PE detailed design.
Request Rev P2 package → STEP · DXF · IFC4 · sheet set — released under NDA at vendor-selection stage.
TCS sup40.0°C
TCS rtn53.4°C
Flow1182LPM
FWS sup/ rtn45.0 / 57.0°C
Rejection~850kW
PUE1.20design-day
BESS141min ride-through
Request Rev P2 package