EXTRCOOL Liquid Cooling Secondary Cooling Loop

Extrcool Liquid Cooling Secondary Cooling Loop is an essential circulating system for modern data center liquid cooling solutions. It serves as the intermediate cooling circuit that transfers waste heat from primary IT cooling equipment such as CDUs, rear door heat exchangers and server cold plates to the external cooling tower or chiller system.Designed for stable flow circulation and precise temperature regulation, the secondary cooling loop balances system pressure, reduces heat exchange loss, and maintains consistent cooling efficiency throughout 24/7 data center operation. With optimized pipeline layout, anti-leakage structure and low-resistance fluid design, it effectively lowers overall data center PUE and improves energy utilization.Fully adaptable for new data center construction and liquid cooling retrofitting projects, Extrcool secondary cooling loop supports customized flow rates, temperature ranges and installation layouts. It provides reliable, scalable and energy-efficient thermal circulation for high-density AI computing centers and large-scale liquid cooling infrastructure.

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EXTRCOOL Liquid Cooling Secondary Loop

Why Choose Extrcool
Liquid Cooling Secondary Cooling Loop?

Stable Heat Transfer Circulation

Extrcool secondary cooling loop acts as the core circulation system to continuously transfer residual heat from CDUs, rear door heat exchangers and server cooling units to external chillers and cooling towers, maintaining stable heat exchange throughout the whole data center.

Precise Temperature & Pressure Control

Optimized loop design ensures balanced water pressure, steady flow rate and consistent temperature output. It eliminates system fluctuation and guarantees reliable 24/7 operation for high-density liquid cooling infrastructure.

Lower Overall Data Center PUE

By improving heat transfer efficiency and reducing cooling energy waste, our secondary cooling loop effectively decreases mechanical load, minimizes heat loss and significantly lowers the overall PUE of AI and high-performance data centers.

High Safety & Anti-Leakage Performance

Adopting industrial-grade pipelines, standard connectors and reliable sealing technology, the secondary cooling loop prevents leakage, scale buildup and pressure risks, ensuring long-term safe operation for mission-critical IT environments.

Fully Customizable System Layout

Extrcool supports customized flow capacity, pipeline layout, connection ports and installation solutions. It perfectly adapts to new data center construction, old room renovation and modular liquid cooling expansion projects.

Scalable & Low Maintenance Design

Designed for large-scale thermal management systems, our secondary cooling loop features low resistance, high durability and easy maintenance. It provides expandable, cost-effective and long-lasting liquid cooling circulation for modern data centers.

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Customer Review

SynthAI Cloud GmbH

Location: Stuttgart, Germany

Contact: Dr. Felix Neumann, Technical Director

Project: Secondary liquid cooling loop deployment for AI GPU compute cluster

"We selected Extrcool's liquid cooling secondary loop solution to upgrade our high-density AI inference data center, and we are extremely satisfied with the overall performance.

The secondary loop design provides stable coolant circulation and precise temperature control for our NVIDIA GPU racks, effectively isolating primary chilled water risks and improving system safety. The fully modular layout perfectly fits our German-standard data center infrastructure and meets strict EU industrial compliance requirements.

Thanks to Extrcool's optimized pipeline design and professional on-site commissioning, we reduced cooling energy consumption by 36% and eliminated hot-spot issues under continuous AI workloads. Their responsive after-sales support and long-term operational reliability make them our preferred liquid cooling partner for future expansions."

Bavaria Datacenter Systems UG

Location: Nuremberg, Germany

Contact: Lena Weber, Facility & Sustainability Manager

Project: Legacy data center retrofit with AI-oriented secondary liquid cooling loop

"Facing growing high-power AI server loads, our traditional air-cooled system could no longer meet thermal demands. Extrcool delivered a tailor-made liquid cooling secondary loop system that seamlessly integrated with our existing data center without major structural reconstruction.

The closed secondary loop minimizes leak risks and reduces maintenance complexity, which is critical for our 24/7 mission-critical AI services. All materials and workmanship comply with German VDI and TÜV standards, showing outstanding quality control.

We achieved a PUE reduction from 1.52 to 1.19 and significantly improved equipment service life. Extrcool's engineering team understood European operational requirements very well and provided reliable long-term technical support. We highly recommend their secondary loop solutions for German AI data center upgrades."