Quick-disconnect coolant hoses connected to the rear of a liquid-cooled rack

Capabilities

Liquid Cooling Controls

Divcon writes the controls for every part of a liquid-cooled facility and answers for the whole cooling loop, from the plant that chills the water to the fluid arriving at the chip.

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Connected controls

Mission critical cooling

Liquid cooling puts a coolant distribution unit between the facility water and the rack: chilled water on the primary side, coolant on the secondary side, heat passing between them without the two ever mixing.

Divcon controls both sides of that unit and ties them back to the chiller plant, so the plant is already responding when the compute load climbs.

One standard across every facility

One control standard, agnostic to the hardware underneath it, and the same sequences, graphics, and alarms on every site.

Design assist from the first drawing

Divcon works the design before the units are chosen, so the controls are accounted for in the specification.

A single point of accountability

No gap between the mechanical trade and the rack vendor, and no scope question when something needs fixing.

Technician checking a cabinet on the data hall floor, rendered as a purple halftone

How it works

Divcon solves the control problem

Each method moves heat differently and puts a different demand on the control system. Divcon controls all three, from the cold plate at the chip to the tank on the floor.

Method 1

Liquid to Chip

Cold plates mount directly onto the processors. Coolant runs through the plate and takes the heat off at the chip, before it reaches the air in the hall.

What Divcon does

Keep supply temperature, flow, and differential pressure steady at the plate while the compute load swings, with the secondary loop above dew point so nothing condenses on live hardware, and catch a leak at the connection.

Method 2

Single phase immersion

Whole servers sit submerged in a dielectric fluid. Heat passes from the components into the fluid, and leaves the tank through a heat exchanger that hands it off to the facility water.

What Divcon achieves

Hold the tank at temperature and set the pump rate for a fluid that gets thinner as it warms. Watch the heat exchanger and catch it losing ground before the tank starts heating up.

Method 3

Two phase immersion

The fluid boils where it touches the components and rises as vapor. It condenses at the top of the tank and falls back as liquid, carrying the heat out through the condenser.

How Divcon works

Run the condenser at the temperature the fluid needs, because the condenser temperature sets the tank pressure and the pressure sets where the fluid boils. Match condensing capacity to the load, so the fluid returns as fast as it boils out.

How it works

Three ways to cool with liquid. One control problem.

The method changes with the hardware. The job of the control system does not. Hold the fluid where the equipment needs it, watch both sides of the exchange, and see a problem coming before it reaches a processor.