The "Liquid Heart" of the Computing Era: The Rise and Opportunities of AI Server Liquid Cooling Pumps
When ChatGPT sparked a global AI race, and when large model parameters exceed the trillion level, a seemingly inconspicuous yet critical question emerged: how to cool these "power-hungry giants"?
The answer is shifting from traditional air cooling to liquid cooling. Within liquid cooling systems, micro liquid cooling pumps — what industry insiders call the "liquid heart" — are experiencing unprecedented opportunities.
Meanwhile, micro air pumps also play an indispensable role in the server domain. From internal airflow circulation to environmental monitoring sampling, air pumps work in concert with liquid cooling pumps, jointly safeguarding the stable operation of computing infrastructure.
This article analyzes the development path of AI server liquid cooling pumps from multiple dimensions, including AI computing power demand, liquid cooling technology evolution, pump and valve market landscape, and future prospects.
I. Computing Power Explosion: Liquid Cooling from "Optional" to "Essential"
The training and inference of AI large models consume computing power exponentially. Taking the GPT series as an example, model parameters surged from 117 million in the first generation to the trillion level. Each training session involves tens of thousands of GPUs running simultaneously, generating astonishing amounts of heat.
The Limits of Air Cooling
Traditional air cooling technology is approaching physical limits. Single GPU power consumption has climbed from 250W to 700W or even higher, while rack power density has jumped from a few kilowatts to tens of kilowatts. Faced with such high heat density, air cooling appears inadequate — high noise, low energy efficiency, and difficulty eliminating localized hotspots.
Advantages of Liquid Cooling
With higher specific heat capacity and heat transfer efficiency, liquid cooling has become the critical path to solving high-power dissipation challenges:
- Superior Cooling Capacity: The specific heat capacity of liquid is more than four times that of air, and its thermal conductivity is more than 20 times higher - Higher Energy Efficiency: Liquid cooling systems can achieve PUE below 1.1, while air cooling typically exceeds 1.5 - Lower Noise: Eliminating high-speed fans dramatically reduces data center noise - Higher Space Utilization: Rack density can be increased by 2-3 times
According to market research, the global liquid cooling server market exceeded USD 10 billion in 2025, with a compound annual growth rate exceeding 25% from 2026 to 2030. Liquid cooling is moving from "optional" to "essential."
II. Liquid Cooling Technology Roadmaps: Cold Plate vs. Immersion
Current AI server liquid cooling mainly follows two technical paths:
Cold Plate Liquid Cooling
Cold plate liquid cooling is currently the mainstream solution. Liquid cooling plates are attached to the surfaces of high-heat-generating components such as CPUs and GPUs. Coolant flows through the plates to carry away heat, which is then released to the outside through heat exchangers.
This solution imposes the following requirements on liquid cooling pumps:
- Stable Flow Rate: Must provide stable circulation flow to ensure each cold plate receives adequate coolant - Adequate Head Pressure: Must overcome piping resistance and height differences - Low Pulsation: Excessive pulsation can cause cold plate temperature fluctuations, affecting chip stability - Long Life: Servers require 7×24 continuous operation, necessitating pump design life of tens of thousands of hours
Immersion Liquid Cooling
Immersion liquid cooling directly submerges server motherboards in dielectric coolant. Heat is carry away through natural convection or forced circulation of the coolant. This approach offers higher cooling efficiency but poses greater technical challenges.
Immersion liquid cooling imposes even stricter requirements on pumps:
- Media Compatibility: Coolants are special fluorinated fluids with specific requirements for pump materials - Sealing: Pumps must be fully submerged or isolated from coolant to prevent leakage - Electrical Safety: Pump motors must meet insulation requirements to avoid short-circuit risks
III. Technical Requirements for Liquid Cooling Pumps: From "Usable" to "Optimal"
AI servers impose requirements on liquid cooling pumps far exceeding those for ordinary industrial pumps. Here are several core specifications:
Reliability: The Test of 7×24×365
Data center servers require uninterrupted year-round operation. Any failure can lead to computing power loss or even business interruption. Liquid cooling pumps must achieve MTBF of over 50,000 hours, with some high-end applications requiring 100,000 hours.
Low Noise: From "Roaring" to "Whispering"
Traditional air-cooled server rooms can reach noise levels above 80dB, while liquid-cooled servers can reduce noise to below 45dB. This imposes high requirements on pump quiet design — not only low pump body noise but also elimination of pinping vibration and fluid pulsation noise.
Compact Size: Server Rack Space Is at a Premium
Server rack space is extremely valuable. Liquid cooling pumps must achieve efficient fluid delivery within limited space. Miniaturization and integrated layouts are becoming trends, with some manufacturers integrating pumps with heat exchangers and control valves into single modules.
Intelligence: From "Passive Delivery" to "Active Regulation"
Modern liquid cooling systems require pumps with intelligent sensing and regulation capabilities:
- Flow Feedback: Real-time monitoring of output flow,forming a closed loop with control systems - Temperature Coordination: Automatic pump speed adjustment based on chip temperature for on-demand cooling - Fault Prediction: Forecasting potential failures, in advance notifying maintenance - Redundancy Design: Dual pump backup, automatic switch upon single pump failure
Media Compatibility: Special Requirements of Fluorinated Fluids
Fluorinated fluids commonly used in immersion cooling have characteristics such as low surface tension, high volatility, and chemical inertness, but impose special requirements on pump material selection:
- Pump body materials must resist fluorinated fluid corrosion, commonly using stainless steel, PTFE, PEEK, etc. - Seals must be made of specialty materials such as perfluoroelastomer (FFKM) - Motors must be isolated from coolant or use magnetic drive for leak-free operation
IV. The Collaborative Role of Micro Air Pumps
In the AI server domain, liquid cooling pumps take center stage, but micro air pumps are equally indispensable. Each plays its distinct role, jointly forming the server's thermal management system.
Auxiliary Airflow Circulation
Even with liquid cooling, servers still require airflow circulation to cool non-core components (such as memory, hard drives, power supplies). Micro air pumps can be used for precise control of local air paths, delivering cool air to specific areas.
Environmental Monitoring Sampling
Data centers impose strict requirements on environmental parameters (temperature, humidity, cleanliness). Micro air pumps can be used for gas sampling, transfer air samples to sensor arrays for real-time monitoring.
Drying and Condensation Prevention
Liquid cooling systems may produce condensation in low-temperature environments, threatening electronic component safety. Micro air pumps can be used for blow dry air to prevent condensation formation.
Gas-Liquid Mixing Applications
Some liquid cooling systems employ gas-liquid mix circulation, utilizing bubbles to enhance heat exchange efficiency. Micro air pumps play a critical role in these scenarios.
Synergy with Liquid Cooling Pumps
Together, they form a "liquid cooling primarily, air cooling supplemented" collaborative framework within servers. Liquid cooling pumps stand core heat dissipation tasks, while air pumps handles auxiliary and optimization functions, jointly ensuring servers operate within optimal temperature ranges.
V. Market Landscape and Industry Chain Opportunities
The AI server liquid cooling pump market is attracting an increasing number of participants, with the industry chain landscape gradually becoming clearly.
Overseas Pioneers
European and American enterprises started earlier in the liquid cooling pump field, with deep technical expertise. Traditional pump companies such as Grundfos and Wilo have already launched dedicated liquid cooling pump product lines for data centers. These companies have first-mover advantages in materials, sealing, and control.
The Rise of Chinese Players
With the rapid development of China's AI industry, domestic liquid cooling pump enterprises are catching up rapidly. Leveraging complete supply chains, quick response capabilities, and cost advantages, Chinese pump manufacturers are continuously increasing their market share in the liquid cooling pump sector.
Industry Chain Opportunities
The rise of AI server liquid cooling pumps is driving development in upstream materials and components:
- Specialty Materials: Surging demand for engineering plastics and specialty rubber resistant to fluorinated fluid corrosion - Motor Control: High-efficiency brushless motors and intelligent controllers becoming standard - Sensors: Integration of flow, pressure, and temperature sensors with pumps - Seals: Growing demand for perfluoroelastomer seals and ceramic bearings
VI. Technical Challenges and Breakthrough Directions
The application of liquid cooling pumps in AI servers still faces multiple challenges:
Challenge One: Long-Term Reliability Verification
Server applications demand extremely high pump life. The testing cycles of traditional pump manufacturers struggle to keep pace with AI computing power iteration speed. Accelerating reliability verification is a critical industry challenge.
Breakthrough Direction: Establish accelerated life testing systems, using high-temperature, high-pressure, high-frequency operating conditions to shorten verification cycles.
Challenge Two: The Trade-off Between Miniaturization and Performance
Achieving high flow and high head pressure within limited space poses design challenges. Miniaturization often comes at the cost of performance.
Breakthrough Direction: Adopt brushless DC motors to increase power density; optimize impeller and hydraulic design to improve efficiency; integrate pumps and valves to reduce piping footprint.
Challenge Three: Multi-Pump Coordinated Control
Large AI server clusters may employ dozens or even hundreds of liquid cooling pumps. Achieving coordinated control, redundant switch, and fault isolation presents system-level challenges.
Breakthrough Direction: Develop intelligent control algorithms for pump group self-coordination; employ high-speed communication buses for real-time monitoring; introduce digital twin technology for predictive maintenance.
Challenge Four: Cost Control
Liquid cooling systems are more expensive than air cooling. Reducing pump costs to promote liquid cooling adoption is a shared industry goal.
Breakthrough Direction: Optimize supply chains and scale production; standardize designs to reduce customization; adopt modular layouts to lower system integration costs.
VII. Future Outlook: The Vast Horizons for Liquid Cooling Pumps
The sustained growth of AI computing power is opening vast market space for liquid cooling pumps. Looking ahead, several trends merit attention:
With single-chip power consumption exceed 1000W, air cooling can no longer cope. Liquid cooling will become standard for AI servers, with the liquid cooling pump market expected to exceed RMB 10 billion by 2030.
Trend Two: Pump-Valve Integration
Liquid cooling pumps will integrate with solenoid valves, flow sensors, and pressure sensors into single modules, simplifying system design and enhancing reliability. Pump-valve integration will become an important evolution direction.
Trend Three: Deep Intelligence Integration
Liquid cooling pumps will evolve from mere actuation components into intelligent nodes with sensing, decision-making, and communication capabilities. Deep integration between pumps and server BMC (Baseboard Management Controller) will enable precise thermal management.
Trend Four: New Material Applications
Silicon carbide ceramic bearings, PEEK engineering plastics, perfluoroelastomer seals, and other new materials will be widely adopted in liquid cooling pumps, enhancing corrosion resistance and lifespan.
Trend Five: Green Manufacturing and Circular Economy
The manufacturing process for liquid cooling pumps will place greater emphasis on environmental protection, with increased proportions of recyclable materials. Modular pump designs will facilitate repair and recycling, extending product lifecycles.
VIII. SIM Pump's Exploration in Liquid Cooling Pumps
As a high-tech enterprise deeply rooted in the micro pump and valve field for over a decade, SIM Pump closely monitors the development trends of AI server liquid cooling technology. Leveraging nearly 100 patents, the company has accumulated extensive experience in quiet operation, long life, and intelligence for micro pumps.
Liquid Cooling Pump Technology Reserves
- Brushless DC Motor Technology: High efficiency, long life, low noise - Ceramic Bearing Technology: Wear-resistant, corrosion-resistant, lubrication-free - Intelligent Control Modules: Integrated flow feedback, temperature coordination, fault prediction - Material Selection Capability: Establishing material compatibility databases for special media such as fluorinated fluids
Micro Air Pump Product Lines
- Micro Diaphragm Air Pumps: Suitable for gas sampling, drying blow. - Micro Solenoid Air Pumps: Suitable for air path control, gas-liquid mixing - Micro vacuum pumps: Suitable for negative pressure adsorption, drying treatment
All products strictly adhere to ISO9001 and IATF16949 quality management systems, complying with ROHS, CE, and other international certification standards. Components contacting coolant are provided with customized material solutions based on customer requirements, ensuring long-term stable operation.
IX. Conclusion
The horn of the AI computing power race has sounded, and liquid cooling technology is transitioning from "alternative" to "mainstream." In this transformation, micro liquid cooling pumps, as the "heart" of liquid cooling systems, bear the responsibility of cooling computing infrastructure.
Meanwhile, micro air pumps, as the "auxiliary heart" of server thermal management systems, play an equally irreplaceable role. Working in synergy, liquid and gas complement each other, jointly safeguarding the computing foundation of the AI era.
From air cooling to liquid cooling, from passive heat dissipation to intelligent thermal management, each technological leap brings new opportunities to the pump and valve industry. SIM Pump stands ready to join hands with industry chain partners, providing Chinese solutions for the cooling challenges of the AI computing era with reliable pump and valve products.
As trillion-parameter models run within servers, as the light of intelligence illuminates humanity's path forward, those quietly operating pumps and valves are using their "heartbeats" to safeguard the computing pulse of this era.
For more information on how SIM Pump's liquid cooling pump and air pump products can be applied in AI server cooling applications, please visit our website or contact our sales team.
Sammy