Brazed Plate Heat Exchanger Applications in Single Server

Feature Article
Brazed Plate Heat Exchanger Applications in Single Server

BPHE

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As edge computing becomes increasingly prevalent, compact servers with independent computing capabilities—such as edge servers—are being widely deployed across distributed environments, placing greater demands on thermal efficiency.

Introduction to Single Server in Data Centers

These single-server systems often adopt a modular, high-density design, with each unit equipped with a fully enclosed liquid cooling loop and a dedicated BPHE (brazed plate heat exchanger) for precise thermal control. This localized and efficient cooling approach not only enhances heat dissipation but also contributes to overall energy savings.

In Single Server applications, Brazed Plate Heat Exchangers (BPHEs) play a central role. KAORI's BPHEs are ultra-compact and efficient, supporting 3-10kW heat loads, and compatible with 25% PG coolant or deionized water. This makes them ideal for AI, HPC, and edge computing environments where space and performance are critical. The connectors and plates of KAORI's BPHE products are made of stainless steel, and 99.9% pure copper is used as the brazing material. Standard designs support up to 30 bar (up to 140 bar upon request) and a maximum working temperature of 200 °C , and are certified by CE(PED) / UL.

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Compact Size, High Efficiency

In edge computing and high-density server modules, space is extremely valuable. KAORI BPHEs adopt an exquisitely compact design, such as the K025 model, which measures only 205x73mm, allowing for easy integration within a single server module to achieve an ideal "one unit, one loop" cooling mode. Despite their small volume, they can provide approximately 5kW of highly efficient heat removal capability, ensuring maximum heat dissipation efficiency with minimal space occupation. This not only significantly saves valuable rack space but also provides crucial thermal management support for blade servers, edge computing devices, and other high-density systems, effectively reducing overall energy consumption and enhancing system power density and stability, meeting the demands of forward-looking designs that prioritize both miniaturization and high performance.

High Heat Transfer Capability

AI and HPC applications demand extremely rapid heat dissipation for CPUs/GPUs, as any heat accumulation can lead to chip throttling, severely impacting computing performance and hardware lifespan. KAORI BPHEs feature a highly efficient heat transfer structure, including optimized plate corrugation designs and flow channel distribution, enabling immediate and effective transfer and removal of heat from core processors. This efficient heat exchange mechanism ensures that the operating temperature of core components can be maintained within a stable and optimal range. For BPHEs supporting two-phase cooling, the isothermal boiling characteristic of the refrigerant on the chip surface can effectively suppress the formation of localized hot spots, further reducing the risk of throttling due to overheating and ensuring servers maintain optimal computing performance and stability under high loads.

Easy Modular Integration

The design trend for Single Server systems emphasizes high modularity and scalability, which demands flexibility in the integration of internal components. KAORI BPHEs are designed with this in mind, allowing for highly compatible and seamless integration with various liquid cooling loops, independent coolant distribution units (CDUs), or advanced direct-to-chip cooling architectures. We not only provide standard interfaces but also support manufacturers' customized mechanical and flow path designs, such as various connector sizes and configurations, and compatibility with different fluid mediums. This high degree of integration flexibility not only simplifies the complexity of system design and assembly but also accelerates time-to-market for products, helping customers rapidly deploy high-performance Single Server solutions and enhance overall system flexibility and adaptability

Stable Production Quality

For long-term, high-load Single Server applications, the stability and reliability of the cooling system are the cornerstone of data processing assurance. KAORI possesses complete in-house design and production processes, rigorously controlling product quality. Every BPHE undergoes stringent testing procedures, including burst pressure tests exceeding industry standards and comprehensive lifetime tests, to simulate extreme operating conditions. These strict quality verifications ensure that KAORI BPHEs can still provide stable and reliable heat dissipation performance when facing challenges of high pressure, high temperature, and frequent starts/stops. This effectively reduces the risk of server downtime due to cooling system failures, offering customers peace of mind for long-term operational assurance.