Views: 0 Author: Suofu Publish Time: 2026-06-18 Origin: Site
In high-precision temperature control scenarios such as AI servers and high-end chillers, flow stability directly determines temperature control accuracy. With the widespread adoption of microchannel liquid cooling technology, flow fluctuation issues inherent to conventional pumps have become a core bottleneck for high-end liquid cooling systems.
Microchannel liquid cooling is the mainstream thermal management solution for today’s high-power AI chips. Its flow channels measure only 0.01–1 mm in diameter, with a heat exchange surface area per unit volume 10–100 times that of conventional heat exchangers, and single-node heat dissipation capacity exceeding 1,500 W—making it an ideal fit for the cooling demands of high-TDP AI GPUs.
This structure brings entirely new requirements for transfer pumps:
✅ Low flow, high pressure: Extremely small flow paths lead to significantly higher flow resistance. System pressure demand rises from the conventional 1 bar to 3–6 bar or even higher, while required flow rates remain relatively low—a typical low-flow, high-pressure operating condition.
✅ Absolutely stable flow: High-end chillers and AI liquid cooling systems require extremely tight temperature control, with many applications demanding temperature fluctuations within ±0.5°C. This means pump flow must be absolutely stable and must not vary with system pressure fluctuations.
Conventional centrifugal pumps have an inherent limitation in such high-precision scenarios: flow rate fluctuates sharply with changes in outlet pressure.
Suofu has conducted comparative tests showing:
When there is a minor 0.5 bar fluctuation in outlet system pressure, conventional centrifugal pump flow fluctuates by up to 0.45 m³/h even if pump speed remains constant;
By contrast, the Suofu micro magnetic gear pump maintains flow fluctuation below 0.06 m³/h even under a 4 bar outlet pressure fluctuation—a performance gap of 7.5×.
Centrifugal Pump Performance Curve (1Cst) | Suofu NP1200 Performance Curve (1Cst) |
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The implication is clear: with a conventional centrifugal pump, even minor system pressure variations cause large flow swings, requiring high-precision regulating valves to maintain stability. The Suofu NP series gear pump, however, delivers near-zero flow variation under system pressure oscillation, enabling inherently higher temperature control accuracy.
While centrifugal pumps have a lower upfront cost than gear pumps at equivalent flow rates, adding the necessary flow regulating valve often pushes total system cost above that of a gear pump solution.
The positive displacement structure of gear pumps delivers inherently stable flow. The Suofu NP series further optimizes machining precision on this foundation:
Flow independent of pressure: The positive displacement design ensures flow correlates only with rotational speed and is almost entirely unaffected by outlet pressure, eliminating flow variation caused by pressure fluctuations.
Ultra-high control accuracy: The NP series achieves flow control accuracy of ±0.1%, fully meeting the requirements of high-end chillers and high-precision temperature control systems.
Optimized for low-flow, high-pressure conditions: The NP series is natively suited to low-flow, high-pressure duty points, perfectly matching the pressure requirements of microchannel liquid cooling systems, and easily handles system pressures of 3–6 bar or higher.
Today, the NP series is already deployed in a wide range of high-end liquid cooling systems—including MLCP microchannel liquid cooling systems and pump-driven two-phase immersion liquid cooling systems (full-system immersion)—where these high-precision micro pumps ensure stable flow delivery.
✅ High-precision temperature control systems for high-end precision chillers
✅ Coolant circulation for AI server microchannel liquid cooling
✅ High-density cooling systems for distributed computing centers
✅ Precision temperature control systems for semiconductor manufacturing equipment
✅ Liquid cooling systems for space-based computing centers
✅ Gun cable liquid cooling systems for ultra-fast EV chargers
✅ Phase-change liquid cooling systems
✅ Liquid metal cooling systems
For high-precision liquid cooling requirements, Suofu offers the NP100 paired with a 100 W DC motor, NP190 paired with a 100 W canned motor, and NP350 paired with a 300 W canned motor. These models are designed specifically for high-precision temperature control and microchannel liquid cooling, support accurate flow regulation, and guarantee system temperature control accuracy.
