2024 Top Trends in Immersion Cooling Technology


Table of contents:

  1. What is liquid cooling technology?

  2. What is immersion cooling?

  3. Advantages of Immersion Cooling Technology

  4. Applications of Immersion Cooling Technology

  5. What is a coolant

  6. Common types of coolant

In recent years, with the advancement of IT and the emergence of generative AI, server computational power has significantly increased, leading to higher heat generation. This trend is driving the development of future cooling technologies. Naturally, developing chips with enhanced heat dissipation capabilities directly from the source would be the optimal solution. However, this aspect will not be discussed in this article.

Traditional air cooling techniques are no longer adequate, and liquid cooling technology has emerged as a new solution. Among these, immersion cooling stands out for its potent heat dissipation effect, greatly enhancing cooling efficiency. It effectively reduces operating temperatures, prolongs equipment lifespan, and tackles the persistent issues of high energy consumption, water usage, and carbon footprint associated with traditional air cooling.

What is liquid cooling technology?

As the name suggests, liquid cooling technology involves using a cooling liquid to lower temperatures. Common server liquid cooling methods include direct liquid cooling (DLC), also known as direct-to-chip (D2C) liquid cooling, and immersion cooling.

Direct Liquid Cooling (DLC) involves enclosing sealed pipelines filled with cooling liquid, often referred to as a closed-loop cooling system, around the heat-generating components inside the server. Heat is conducted to the cooling liquid through thermal copper plates, also known as "cold plates." The cooling liquid flows out of the server along the pipelines, undergoes heat exchange through a heat exchanger to dissipate heat, and then returns to continue the cooling process within the server.

What is immersion cooling?

Immersion cooling involves submerging servers in an insulating (dielectric) coolant, allowing direct contact and flow of the liquid to conduct heat, utilizing single-phase or two-phase physical phase changes for heat dissipation.

Advantages of Immersion Cooling Technology:

  • Enhanced Cooling Efficiency

    Immersion cooling systems effectively absorb and dissipate heat, avoiding the thermal resistance and conduction issues present in air cooling systems, thereby improving cooling efficiency.

  • Energy Efficiency and Environmental Friendliness

    Compared to traditional cooling systems, immersion cooling systems require fewer fans and air conditioning equipment, leading to energy savings and reduced carbon emissions.

  • Reduced Noise and Dust

    Immersion cooling systems eliminate the noise generated by fan operation and reduce the impact of dust in the air on hardware, contributing to increased equipment reliability and lifespan.

Applications of Immersion Cooling Technology:

  • Data Centers

    Large-scale data centers require significant computational resources, making heat dissipation a critical concern. Immersion cooling technology effectively enhances cooling efficiency and reduces operational costs, making it favored by data center operators.

  • High-Performance Computing

    In the realm of high-performance computing, both computational resource density and heat dissipation demands are exceptionally high. Immersion cooling technology can address these challenges, providing robust support for high-performance computing.

  • Artificial Intelligence(AI)

    Artificial intelligence applications often necessitate extensive computational resources to handle massive amounts of data, resulting in high demands for cooling efficiency. Immersion cooling technology ensures that computer hardware remains stable and reliable under prolonged high-load operations.

What is a coolant?

A coolant is a dielectric liquid used in liquid cooling systems, typically designed for dissipating heat, cooling, and protecting electronic devices or other systems. Coolants possess excellent thermal conductivity and chemical stability, enabling them to effectively absorb and transfer heat, thereby helping to maintain the stability and performance of equipment.

Common types of coolant:

  • Fluorinated liquids

    These are specially designed dielectric fluids with excellent thermal conductivity and chemical stability. While they offer superior performance in heat dissipation, they tend to be more costly and are typically used in high-performance computers or other applications requiring efficient cooling.

  • Synthetic oils

    • Mineral oil

      A type of synthetic oil coolant with higher heat capacity and thermal conductivity. It typically does not evaporate or corrode metals but may have the potential to contaminate the environment and produce odors, leading to a trend of gradual phasing out.

    • Silicone oil

      Another type of synthetic oil coolant with good thermal conductivity and chemical stability. It is commonly used in certain specialized liquid cooling systems.

In such emerging fields, insulated tubing is crucial for immersion cooling. Good Gi's heat shrink tubing has undergone rigorous testing by international third parties to ensure long-term stable operation in liquid-immersed cooling environments. It is resistant to corrosion from synthetic oils and can withstand the temperature variations inherent in immersion cooling, providing more durable and lasting protection for wires. This ensures your equipment stands strong in the fiercely competitive IT landscape. Choose Good Gi's insulated tubing to propel your devices towards a more efficient and reliable future.