On-site photo of liquid cooling distribution unit piping and pressure gauges

COOLING MODULE

Cooling Module

Stably rejecting heat from the IT side to outdoors: pump sets, plate heat exchangers, filtration and heat rejection equipment are assembled and pressure-tested in the factory.

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OVERVIEW

Separated loops for zoned maintenance

The cooling module uses a design separating the secondary and primary loops. The secondary side connects to the IT module's cold-plate piping, the primary side connects to outdoor heat rejection equipment, and the two are isolated by a plate heat exchanger, allowing water quality and pressure to be managed independently.

Pump sets are configured with redundancy, and together with filtration, make-up water and pressure monitoring devices, undergo interlock verification—including pump switchover and alarm logic—during factory testing.

The heat rejection side can be selected based on site climate and water resource conditions, with actual efficiency to be confirmed by project evaluation.

COMPOSITION

Module Composition

Key equipment and systems are factory-installed, piped and tested.

Circulation Pump Sets

Redundant variable-speed pumps supporting fault switchover and flow adjustment.

Plate Heat Exchanger

Isolates the secondary and primary loops, easing independent water quality maintenance.

Filtration & Make-Up Water

Side-stream filtration, make-up water and air venting devices ensure long-term loop stability.

Outdoor Heat Rejection Equipment

Dry coolers or other heat rejection forms selected based on climate conditions.

Valves & Sensing Points

Supply/return temperature, pressure, flow sensing points and isolation valves are factory-installed.

Control Cabinet

Local control and interlock logic, reporting operating data to the cluster control plane.

COMPARISON

Comparing the three module types

A quick look at how IT, cooling, and power modules differ and where each applies; specific parameters should be confirmed with site conditions and project evaluation.

Comparison of the roles, components, parameters, and applicable scenarios of the IT module, cooling module, and power module
Dimension	IT MODULEIT Module	COOLING MODULECooling Module	POWER MODULEPower Module
Core role	Houses GPU racks, network equipment, and cold-plate liquid cooling piping — the direct carrier of compute capacity.	Collects heat from the IT side and rejects it outdoors, maintaining the temperature conditions equipment requires.	The complete chain from utility grid connection to rack power supply, ensuring continuity and metering of power.
Key components	Racks, cable trays and structured cabling, cold-plate manifolds, rack PDUs, environmental monitoring points.	Pump sets, heat exchangers, filtration and fluid make-up units, outdoor heat rejection equipment, water quality and flow monitoring.	MV/LV switchgear, transformers, UPS and batteries, busways and backup power transfer devices.
Key parameters to consider	Rack power density, number of racks, cooling method (cold-plate/air-liquid hybrid), network architecture.	Heat exchange capacity, supply/return water temperature and flow, free-cooling hours, PUE design target.	Incoming voltage level, total capacity, redundancy level, backup duration and transfer method.
Typical applicable scenarios	Added compute capacity, GPU platform upgrades, rack re-planning for training or inference scenarios.	High power-density liquid cooling deployments, free cooling in cold-climate sites, retrofits where existing cooling capacity is insufficient.	Access to renewable or hydro power, phased campus expansion, retrofits of existing facilities with limited power distribution capacity.
Interfaces with other modules	Connects to the cooling module's secondary supply/return water and the power module's busway feed, with unified monitoring integration.	Supplies water to the IT module, draws power from the power module, and feeds cooling capacity and water temperature data into monitoring.	Supplies power to the IT and cooling modules, with metering and protection data fed into monitoring.
Expansion approach	Add module units as compute demand grows, keeping the internal design of existing units unchanged.	Add pump sets and heat rejection units per thermal load, or add cooling modules.	Add power distribution units or increase incoming capacity as needed, releasing supply capacity in phases.

CONFIGURATOR

Cooling Module Configurator

Choose the loop configuration, heat rejection method, pump redundancy and temperature strategy to generate a recommendation summary and matching interface list.

Loop configuration

Heat rejection method

Determined by site climate and water resource conditions.

Pump redundancy

Temperature strategy

Recommendation summary

Loop configuration: Heat-exchanger isolated (primary/secondary loop)
Primary and secondary loops are isolated by a heat exchanger, keeping IT-side water quality independently controllable — a common scheme for liquid-cooled clusters.
Heat rejection method: Dry cooler (air-cooled)
Dry coolers reject heat with essentially no water consumption, suited to water-scarce sites or where treatment costs are high; footprint and fan power should be accounted for in evaluation.
Pump redundancy: N+1
Pumps are configured N+1 so cooling continues during single-unit maintenance or failure — the recommended starting point for most training clusters.
Temperature strategy: Warm-water return (energy-efficiency priority)
Higher supply/return water temperatures extend free-cooling hours and lower annual energy use, subject to confirming allowable server operating conditions.

The above is directional guidance based on your selections; final capacity, equipment models and parameters need to be confirmed against site conditions and project evaluation.

Interface list (6 items)

Secondary-loop interface: supply/return flanges or quick connects to the IT module, including isolation valves and measurement points.
Primary-loop interface: supply/return piping to outdoor heat-rejection equipment, including bypass and drain valves.
Outdoor interface: dry-cooler supply/return piping and fan power/control interfaces.
Control interface: pump redundancy transfer and variable-frequency control signals, including fault alarm upload.
Control interface: supply/return water temperature set points and free-cooling transfer strategy parameters.
Monitoring interface: temperature, pressure, flow and water quality data uploaded to the cluster control plane.

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DATASHEET

Key parameter summary & document download

The summary below covers the module's main interfaces and configurable range; the full "Interfaces & Technical Parameters" document (in Chinese) is available to download.

Loop configuration: Heat-exchanger isolated (primary/secondary loop) or single-loop direct connection
Heat rejection method: Dry cooler (air-cooled) or cooling tower (evaporative)
Pump redundancy: N+1 or 2N
Supply/return water temperature: Set per allowable server operating conditions
Secondary-loop interface: Supply/return flanges / quick connects to the IT module
Primary-loop interface: Supply/return piping to outdoor heat-rejection equipment
Water system: Filtration, make-up, blowdown and water-quality monitoring
Control interface: Temperature, pressure, flow and redundancy transfer signals

Cooling Module | Interfaces & Technical Parameters

Document No. XA-CL-IFC | Rev. A | Updated 2026-09

The document (issued in Chinese) covers module composition, external interface definitions, configurable ranges and on-site interconnection points, for design and engineering teams to review.

Download PDF (Chinese)

Parameters in the document describe the configurable range; specific values need to be confirmed against site conditions and project evaluation.

FAQ

Cooling Module FAQ

The answers below are based on publicly available product information; specific parameters need to be confirmed against site conditions and project evaluation.

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Need a solution and parameters for a specific site? Pleasebook a technical discussionor visit thefull FAQ pageto learn more.

DIAGRAM & SITE

Diagram & On-site View

Schematic and physical views side by side for engineering review.

Liquid cooling loop schematic: cold plates, secondary loop, CDU heat exchanger and outdoor dry cooler — Schematic: GPU cold plates → secondary supply/return → pump sets/filtration/heat exchanger → primary loop → outdoor heat rejection equipment.

On-site photo of pump sets, heat exchanger and piping inside a prefabricated cooling module — On-site photo: skid-mounted pump sets, filter tanks, plate heat exchanger and insulated piping integrated within the enclosure.

CONFIGURATION

Configurable Options

The following parameters are determined during project evaluation based on site conditions and business scale.

Loop Configuration: Secondary (IT side) and primary (heat rejection side) loops isolated by heat exchanger.
Pump Redundancy: Number of redundant units and switchover strategy configured to availability targets.
Cooling Method: Selected based on site climate and water resource conditions during evaluation.
Supply/Return Temperature: Set according to server operating limits and site conditions.
Water Quality Management: Filtration, make-up water and chemical treatment plans determined by loop materials.

INTERFACES

External Interfaces

Modules connect via standard interfaces, requiring no on-site redesign.

Secondary-side interface: supply/return piping connected to the IT module, with isolation valves and temperature/pressure sensing points.
Primary-side interface: supply/return piping and make-up water entry point connected to outdoor heat rejection equipment.
Electrical interface: powered by the power module, with pump sets and control cabinet fed via redundant circuits.
Monitoring interface: flow, temperature differential, pressure differential and pump status data connected to the cluster control plane.

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