#liquidcoolingsystem

The Importance of Liquid Cooling for Data Centers

Liquid cooling is a key method for enhancing energy efficiency in data centers. According to statistics from the White Paper on Liquid Cooling in China's Data Centers, the market size for liquid-cooled data centers in China is expected to exceed 100 billion RMB by 2024.

When the Thermal Design Power (TDP) reaches 200-300W, specialized airflow management, increased fan capacity and speed, as well as larger and thicker heat sinks, are required to dissipate heat fast enough in server thermal designs. However, when the TDP reaches 350-400W, cooling servers with air becomes extremely difficult and costly, with air cooling nearing its limits. (Data source: Application and Development of Liquid Cooling Technology in Data Centers)

In this situation, liquids with higher thermal conductivity become a better option for heat dissipation. Compared to traditional air cooling, liquids can remove 1,000 to 3,000 times more heat per unit volume, not only achieving precise component-level cooling and ensuring the high performance and reliability of components but also facilitating heat recovery, thereby improving energy efficiency.

Liquid cooling refers to the use of liquids instead of air as the coolant to transfer heat away from heat-generating components. By injecting this liquid into servers, the heat can be removed through heat exchange. Generally, the industry classifies liquid cooling into direct and indirect cooling. Currently, indirect cooling mainly involves cold plate liquid cooling technology, while direct cooling primarily focuses on immersion liquid cooling technology, which can be further divided into phase-change and non-phase-change types. Additionally, there is spray-type liquid cooling.

TOPSFLO liquid cooling pump solutions

The rise of Generative AI (AIGC) and the breakthrough applications of large-scale model technologies have significantly increased demands on the computational efficiency of servers and chipsets. Enhancing CPU and GPU processing power is urgently needed to support their vast computational requirements. In response to the challenges of server overheating and the surge in energy consumption due to rapidly increasing computing power, liquid cooling technology has emerged as a cutting-edge solution. TOPSFLO’s liquid cooling pump solutions precisely match the diverse cooling needs of servers, offering broad compatibility with cold plate efficient cooling, cooling distribution unit (CDU) optimization, and innovative immersion cooling methods. These solutions are adaptable to meet the customized design needs of various clients, ensuring that servers maintain cool and efficient performance even under high workloads.

With nearly 20 years of experience in the DC micro pump industry, TOPSFLO possesses extensive expertise in cooling and pressure boosting solutions for pumps. TOPSFLO has made significant strides in developing liquid cooling solutions for the data center industry, successfully creating liquid cooling pumps that are optimally suited for data center applications.

Advantages of TOPSFLO Liquid Cooling Pump Solutions

Leak-proof, Safe, and Reliable: Designed with consideration for data center leakage concerns, the pump's structure and materials have been carefully selected to ensure safety and prevent leaks.

Comprehensive Product Range: Our solutions cater to various data center cooling requirements, supporting different CPU/GPU power ratings (200W-1000W) and various application.

Low Noise: Compared to fan-based solutions, our pump systems reduce noise levels by over 40%.

Long Lifespan: Designed to meet the operational needs of data center equipment for up to 10 years.

Strong Material Compatibility: Our pumps are compatible with a wide range of liquid media to suit different application environments.

Data Center Liquid Cooling Pump Solutions with Different Functions

1. Cold plate liquid cooling pump solution

Cold plate liquid cooling mainly uses cold plates (enclosed cavities made of high thermal conductivity metals such as copper and aluminum) to indirectly transfer the heat of components to the cooling liquid enclosed in the circulation pipe, and then uses the coolant to take away the heat. It transports the intermediate heat to the back end for cooling through the transfer characteristics of the working fluid. The system mainly includes liquid cold plates, liquid cooling water pumps, pipes, joints, etc.

TOPSFLO water pump solution for 1U/2U servers, combined with cold plate liquid cooling solution —TDC

2. Immersion Liquid Cooling Pump Solutions

Immersion liquid cooling involves submerging the heat-generating components of electronic devices directly into a cooling liquid, where heat is dissipated through heat exchange. The key equipment and facilities involved include outdoor cooling sources, cooling subsystems, liquid cooling pumps, liquid cooling pipelines, and immersion chambers (liquid cooling cabinets). Immersion liquid cooling can be categorized into two types based on whether there is a phase change in the cooling medium: single-phase immersion liquid cooling and phase-change immersion liquid cooling. The primary function of the liquid cooling pump is to promote liquid circulation and accelerate heat dissipation. Compared to phase-change immersion liquid cooling, single-phase immersion liquid cooling requires pumps with higher power to achieve effective liquid circulation.

3. Cold distribution unit CDU

CDU is a cooling distribution unit that connects the cold plate liquid cooling internal circulation and external circulation. The cold plate liquid cooling joint is divided into two layout forms: centralized CDU and distributed CDU. CDU components include interfaces, micro water pumps, liquid-liquid or air-liquid heat exchangers, liquid storage tanks, valve control devices, monitoring devices, filters and various sensors, which are mainly used for the measurement and control of cooling capacity, flow, pressure and temperature. In order to ensure that sufficient cooling power can be provided for the equipment, a powerful micro water pump will be used in the CDU to ensure uniform and sufficient distribution of cooling capacity.

TOPSFLO High-end and Reliable Liquid Cooling Pump Solutions

TOPSFLO has a professional team with reliable capabilities in micro water pumps and liquid cooling technology, and can provide customers with a variety of liquid cooling water pump solutions. These solutions are designed and verified to adapt to the limited cooling space and heat dissipation requirements of each data center, while ensuring excellent cooling efficiency and reliability.

TOPSFLO different series of liquid cooling water pumps are introduced into servers for various application scenarios, and can also be customized according to the cooling needs of different applications, striving to provide our customers with a wider range of liquid water pump solution options.

Wanna to get custom pump service? Feel free to contact us now:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419

Visit our Web: https://www.topstec.com/ http://www.topsflo.com/

The biggest problem of electric vehicles as the preferred choice of environmentally friendly transportation is the slow charging speed for long-distance running, so super fast charging is the mainstream development demand of EV Charger research at present.

To meet market demands, high-current liquid-cooled charger have evolved from the initial 280A to now supporting much higher currents 600A+.

In the EV charger industry, to meet the cooling requirements of different electric vehicle charging cables, an effective cooling system for managing the heat generated during the charging process is crucial.

How to Design an Efficient Cooling Solution for Fast Charging Cables?

1. Understanding Heat Generation:

The heat generated by the cable can be calculated using the following formula: Q=I²Rt , where:

Q represents the heat generated by the cable, in joules (J).

I represents the current through the cable, in amperes (A).

R represents the resistance of the cable, in ohms (Ω).

T represents the time the current passes through the cable, in seconds (s).

It is evident that the heat generated by the cable is proportional to the square of the current, the resistance, and the duration the current flows through the cable.

The heat effect increases significantly with high currents. Understanding the heat generated during high-current charging allows for matching the optimal and most cost-effective cooling method, preventing the accumulation of large amounts of heat in cables and connectors due to high currents.

2. Choosing the Right Cooling Method:

The working conditions of EV Charger are increasingly complex and diverse, such as desert, tropical, seaside, mining areas, etc., bringing high temperature, high humidity, high salt, and dusty working environment, which brings great challenges to the operation and maintenance of charging facilities.

Based on the heat generation calculations, select a cooling method that efficiently dissipates the generated heat. Common cooling methods include:

Air Cooling: Traditional piles rely on air heat exchange to cool down, suitable for lower heat dissipation requirements. It uses fans or blowers to move air across the cables and components, dissipating heat through convection. But the internal components are not isolated: the circuit board and power devices in the charging module are in direct contact with the external environment, which is easy to cause module failure. Wet dust and high temperature cause the annual failure rate of modules to be as high as 3-8%, or even higher.

Liquid Cooling: the use of full isolation protection, through the coolant and radiator heat exchange, completely isolated from the external environment, extend the service life of the equipment, so the reliability is much higher than the air cooling. More effective for higher heat dissipation needs. It involves circulating a coolant (usually water or a water-glycol mixture) through a system of tubes or channels in direct contact with the cables, absorbing heat and transporting it away from the heat source.

3. Design cooling system:

the liquid-cooled EV charger needs to be equipped with a cooling unit, which is composed of a water tank, cooling water pump, radiator and fan. The cooling water pump drives the coolant to circulate in the EV charger cable, bringing heat to the radiator, which is then blown away by the fan, thus achieving greater current carrying capacity than conventional naturally cooled EV charger. Choose a rugged cooling pump that circulates the coolant through the cable. Finding a water pump that can handle the flow required for effective cooling at high currents is critical.

400 ~ 500A cable cooling water pump -- TOPSFLO centrifugal water pump coolant solution: TA70E-A24-4030

PWM speed regulation and FG signal feedback can be customized,

The price is half of the gear pump, with low power consumption, long life and noise level of about 58dB@1 meter.

500A ~ 800A cable cooling water pump -- TOPSFLO gear pump insulation oil solution: TMG317XK/DC24DM

- Coolant: Choose the right coolant so that it can effectively transfer heat away from the cable. Water-based coolants with additives for corrosion protection and thermal conductivity enhancement are a common choice.

- Cooling path: Plan the path for the coolant to pass through the cable. Make sure to cover areas where heat build-up is most significant, such as conductors and connectors.

4. Coolant storage and radiator:

- Reservoir: Includes a reservoir to hold the coolant. This allows the coolant system to be replenished and extended.

- Radiator: Integrates a radiator to dissipate heat absorbed by the coolant. The radiator can be air-cooled or liquid-cooled depending on your setup and space constraints.

5. Pump control and monitoring:

- Control system: According to the filling rate and temperature sensor, the control system of the pump is realized to adjust the coolant flow.

- Temperature monitoring: Install temperature sensors along the length of the cable to monitor heat levels. This data can be used to adjust pump speed and optimize cooling.

6. Safety and reliability:

- Redundancy: Consider redundancy of critical components such as pumps and sensors to ensure continuous operation and safety.

- Leak detection: A leak detection mechanism is adopted to prevent coolant leakage and affect the integrity of the charging cable.

7. Test and verification:

Prototype testing: Build and test prototypes of cooling systems under various load conditions to ensure their effectiveness and reliability.

- Performance verification: Verify the performance of the cooling system according to safety standards and operational requirements.

8. Installation and maintenance:

- Installation: Ensure that the cooling system is properly installed within the charging infrastructure.

Maintenance: Develop a maintenance plan for regular inspection, fluid replacement, and system troubleshooting.

With the above steps, you can design and implement an effective cooling pump solution for high-current EV charging cables, ensuring efficient thermal management and reliable operation during high-current charging.

Wanna to get pump solution or apply free sample? Contact us now:

Email: [email protected]

Whatsapp/Wechat：+86-19376691419

Find more pumps: http://www.topsflo.com/