Coolblock x-520
Engineered for high-density computing,
it sets a new standard
in thermal management
and sustainability.
coolblock
x-520
The X-Rack Series is our latest innovation in single-phase, open-bath, indoor immersion cooling. Building on the insights gained from our pioneering Archimedes Series, X-Rack introduces groundbreaking advancements in efficiency, technology, and performance.
Engineered for high-density computing, it sets a new standard in thermal management and sustainability.
Doubled
Capacity
External
CDU
Advanced
Control
Monitoring
System
doubled capacity
The X-520 immersion cooling tanks can host 22ORU of IT equipment with a total consumption capacity of 50Kwatt. Aprox 2.2Kwatt/OU can be supported.
External Coolant Distribution Unit
The Coolant Distribution Unit (CDU) is the core of our immersion cooling system, ensuring optimal thermal performance and energy efficiency. In this latest product release, the CDU is positioned outside the liquid tank, enhancing service ability and maintenance.
Equipped with dual high-performance pumps (1+1 redundancy), the CDU continuously circulates coolant through the heat exchanger, maintaining liquid temperatures within the specified set point. The intelligent control and monitoring system dynamically adjusts pump speeds to optimize cooling efficiency while minimizing energy consumption.
Workload Power
The X-Series immersion cooling tanks are designed to support dense server deployments for any compute application, from AI and HPC to cloud and enterprise workloads. Servers can be powered through two flexible options:
• Traditional PDUs, securely housed in specially designed compartments at the top of the tank.
• OCP v3 power supplies, utilizing a dedicated system of PSUs and 48V BusBars positioned at the bottom of the tank for efficient power distribution.
The X-Series immersion cooling tanks are designed to support dense server deployments for any compute application, from AI and HPC to cloud and enterprise workloads. Servers can be powered through two flexible options:
Cable
management
Our Coolblock Dashboard
puts you in control of your
data center's cooling performance
real-time monitoring
Monitor your Coolblock tanks in real-time, receive instant alerts for any incidents, and access detailed analytics to optimize your cooling strategy. With remote management capabilities, you can ensure optimal efficiency and respond to issues promptly from anywhere, minimizing downtime and reducing operational costs.
Advanced Control & Monitoring System
The immersion cooling system features a sophisticated control and monitoring architecture, designed to ensure real-time performance optimization, operational stability, and predictive maintenance.
A network of high-precision sensors, strategically positioned within the heat exchanger and the Cooling Distribution Unit (CDU), continuously monitors:
Dielectric
coolant
Facility
water
Coolant conductivity
System
integrity
Dielectric coolant
temperature & flow
The dielectric liquid coolant absorbs and dissipates heat from the IT equipment, ensuring consistent thermal management. Sensors track coolant input and output temperatures to/from the heat exchanger, as well as coolant volume.

Facility water
temperature & flow
The water circuit dissipates heat from the dielectric liquid through the Alfa Laval heat exchanger, maintaining thermal balance. Sensors measure water input and output temperatures to/from the heat exchanger and track water volume to ensure efficient cooling.

Coolant conductivity
& level inside the tank
Detecting leaks, monitoring fluid aging, and ensuring optimal coolant volume.

System integrity
& operational status
Monitoring component (sensors, controller, PLC, pumps) functionality and safety.

Intelligent Control
& Communication
At the core of the system, the Programmable Logic Controller (PLC) serves as the main brain, integrating data from all sensors and dynamically adjusting operations to maintain system stability. These real-time measurements are processed by an advanced Master Controller, which maintain constant information flow from all sensors. The Controller is directly linked to a dedicated industrial grade PLC.
high-speed industrial communication
For seamless, high-speed industrial communication, the PROFINET protocol is used to facilitate data exchange between:
• The Siemens S7-1200 PLC and the IFM Controller for sensor data processing and system diagnostics.
• The Siemens S7-1200 PLC and Grundfos pumps, allowing real-time flow control and pump operation adjustments.
plc - system operations managing
The PLC dynamically manages system operations based on predefined cooling parameters, ensuring optimal cooling efficiency, energy management, and system longevity.
The Grundfos pumps operate under bidirectional communication with the Siemens S7-1200 PLC, precisely regulating fluid dynamics and maintaining system stability.
plc
control ecosystem
This fully integrated, PLC-driven control ecosystem guarantees fast data transfer, seamless automation, real-time diagnostics, and enhanced system reliability, making it an essential component of high-performance immersion cooling solutions.
TECHNICAL SPECS
x-520
