Cooling Wall System for Data Centers
Vindur CoolW@ll is a high-performance cooling wall system engineered for the thermal management requirements of modern, high density data centers.
The Challenge of IT Cooling
Increasing Heat Loads
The rapid growth of digitalization, cloud computing, and artificial intelligence is driving the need for ever more powerful IT infrastructure. Modern servers and AI applications generate significantly higher heat loads per rack and per square meter than previous generations. As data centers become more densely packed, the challenge is to remove this heat efficiently and reliably to prevent overheating and ensure stable operation.
Energy Costs
Data centers are under increasing pressure to reduce energy consumption and improve efficiency (PUE), both to lower operating costs and to comply with regulations such as the EU Energy Efficiency Directive (EED). Since operating costs make up the majority of total expenses over time, improving energy efficiency offers significant savings potential.
Space Requirements
Conventional cooling systems often occupy valuable floor space in the server area and require accessible maintenance corridors, reducing the space available for IT equipment. As data centers strive to maximize server density, efficient use of space becomes increasingly important. Innovative cooling solutions must minimize their footprint while remaining easy to service and integrate into existing layouts.
Advantages of the Cooling Wall System
Maximum Cooling Performance for High-Density and AI Workloads
• Delivers up to 50 kW cooling capacity per rack, designed for the demands of modern, high-performance IT environments.
• Efficient hot/cold aisle containment prevents hotspots and ensures stable temperatures.
Space-Saving Design and Flexible Integration
• Requires at least 50% less service corridor space compared to conventional air-handling units.
• Maximizes usable white space for IT equipment, enabling higher rack density.
• Modular construction allows for quick installation and easy adaptation to various room heights and layouts.
Energy Efficiency and Cost Reduction
• Provides up to 30% more cooling capacity and enables up to 20% lower energy costs.
• Fully compliant with current and future European energy efficiency standards (e.g., EED).
• Innovative technology and modular components can reduce operating costs by up to 70%.
Maintenance-Friendly Operation
• All maintenance can be performed from the rear of the system. Technicians do not need to enter the server room, increasing safety and minimizing downtime.
• Individual components can be replaced or serviced without interrupting IT operations.
Explore the Cooling Solution for High Density Data Centers
Maintenance Corridor
With a dedicated maintenance corridor that separates supply technology from IT equipment, service work can be performed from the rear. This means faster, safer maintenance and minimal disruption to operations. Individual components can be replaced or repaired without removing the entire unit, reducing downtime and costs.
Heat Exchange Module
Large-surface heat exchangers deliver high cooling capacity in a compact footprint, saving valuable space. Low pressure drop and minimal airflow resistance reduce energy consumption and operating costs, while maintaining efficient performance.
Fans
EC centrifugal or axial fans mounted in the wall discharge the warm return air via a ceiling plenum and the cold air to the room via heat exchanger modules.
Hot Aisle
Dedicated hot aisle containment ensures strict separation of hot and cold air for maximum cooling efficiency. Sensor-controlled fans adjust automatically to server load, guaranteeing optimal return air extraction with almost no pressure difference, reducing energy consumption and improving system performance.
Free Cooling
At low outdoor temperatures, water is cooled by ambient air. Combined with hybrid evaporative cooling, the system allows cooling below outside temperature during transitional periods. This maximizes free cooling time and minimizes reliance on energy-intensive chillers, reducing operating costs.
Chiller
At higher outside temperatures, the refrigeration machine mechanically generates the desired supply temperature of the chilled water.
Who is Vindur CoolWall the right solution for?
The Vindur® CoolWall® is the ideal solution for a wide range of data center architectures - from high‑density data centers for AI and HPC applications, to colocation data centers with high efficiency requirements, all the way to enterprise data centers that demand maximum operational reliability. It also excels in edge data centers thanks to its compact design and high cooling capacity.
For modernization and retrofits, the CoolWall offers a powerful upgrade for existing server rooms - without major structural changes and with noticeable efficiency gains.
How Does the Server Room Cooling Work
Vindur CoolW@ll operates as a recirculating air conditioning system. Fans circulate air through a heat exchanger, cooling the air efficiently. Unlike conventional units, the cooling wall system from Weiss Klimatechnik utilizes nearly the entire height and width of the IT room, turning the maintenance corridor into a walk-in cooling chamber.
The hot aisle layout without raised floors separates hot and cold airflows, improving cooling efficiency and reducing energy use. This design simplifies temperature control and minimizes the risk of hotspots. The system maximizes cooling surface area by integrating water-cooled heat exchanger modules into the partition wall between the supply infrastructure and the IT room. Fans are installed in the raised floor or return air ceiling, allowing more space for heat exchangers and enabling efficient removal of large heat loads.
Vindur CoolW@ll is available in many sizes and in different variants to ensure the optimum cooling for your IT
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Video
Vindur CoolWall - Energy-efficient cooling wall system for data centres
Watch the video to find out how the Vindur CoolWall cools data centres in an energy-efficient and space-saving way - perfect for modern high-density IT.
