In modern data centers and server equipment, immersion cooling technology is gradually gaining prominence. This technology utilizes liquid directly in contact to cool electronic devices, replacing traditional air cooling systems, thereby enhancing efficiency and energy savings while also raising environmental and sustainability concerns. This article will discuss two common immersion cooling fluids: hydrocarbons and Fluorocarbons, and explore their impact on carbon emissions and the environment.

COMPUTEX 2024  centered around the theme "Connecting AI," highlighting the latest global AI technologies and industry trends. Over the four-day event, it attracted 85,179 buyers and professionals from the ICT industry, marking a 70% increase from last year. The top five regions represented were Japan, the United States, China, South Korea, and Hong Kong.The relationship between AI's high computational demands and cooling technologies is interdependent. Addressing the need for energy-efficient cooling in data centers, KAORI will unveil multiple server liquid cooling solutions at COMPUTEX 2024. These include the 30kW RDHx rear door heat exchanger liquid-to-air cooling system, the In-Rack 250kW hot-swappable liquid cooling system, the 25U 90kW single-phase immersion cooling system for large data centers, and the flagship product, the In-Row 850kW CDU large-scale multi-rack liquid cooling system. .KAORI's booth, featuring innovative designs and eye-catching liquid cooling technology exhibits, drew significant crowds over the four days, with inquiries up by 50% compared to last year. The main highlights included five major system products ranging from air cooling, direct liquid cooling, to immersion cooling, showcasing KAORI’s dedication to advancing R&D, production capacity, and service quality. The exhibition received widespread acclaim and active participation, with the future-oriented "In-Row 850kW CDU (Coolant Distribution Units)" generating the most discussion. The In-Row 850kW CDU large-scale multi-rack liquid cooling system  not only boosts heat dissipation capacity to over 850 kW but also features a single liquid pump with a delivery pressure exceeding 4 bar and a total flow rate surpassing 850 LPM, suitable for various fluids.With 54 years of expertise in heat treatment and welding, KAORI stands as Taiwan's largest and one of the top five global manufacturers of plate heat exchangers, a critical component of liquid cooling solutions. Since initiating R&D for server cooling solutions in 2018, KAORI has successfully penetrated the AI market supply chain, consistently providing high-wattage cooling solutions to renowned international server manufacturers and data centers.KAORI’s immersion cooling products achieve a PUE (Power Usage Effectiveness) of less than 1.2, reinforcing its strategy to "enhance energy efficiency, reduce operational costs, and minimize environmental impact" as a key operational development objective for data centers.In 2024, KAORI began mass production of liquid cooling systems and components. To solidify its market position and meet future demands, KAORI continues to develop cooling solutions with heat dissipation capabilities exceeding 2000kW, pushing forward with high-performance solutions.

In-Room CRACKAORI manufactures brazed plate heat exchangers(BPHE) as the condenser for computer room air conditioners (CRAC), which typically use a refrigerant in a traditional dry expansion (DX) system.

According to statistics result of comprehensive investigation： the power consumption of data centers is approximately 50 times that compare to general building consumption and among 33% for cooling systems. The 2% of global carbon emissions is from data centers. A key approach to reducing power consumption and improving PUE (Power Usage Effectiveness ) is the adoption of liquid cooling systems, enhancing traditional air-cooling efficiency. Liquid cooling solution can reduce 28% of power consumption, and under the same power consumption, lowers PUE to 1.2 from 1.6 to enhance overall computing efficiency.

KAORI Heat Treatment Co. Ltd (8996. TW), a leading global thermal and hydrogen technology company, announced we have received its ISO/IEC 27001:2022 certification, demonstrating our commitment to the highest information security management standards. ISO/IEC 27001:2022 is an international standard to manage information security, which details requirements for establishing, implementing, maintaining, and continually improving information security management systems (ISMS).

In 2007, The Green Grid (TGG) that is an affiliate member organization of the Information Technology Industry Council (ITI) proposed Power Usage Effectiveness (PUE), is the ratio of the total facility power consumption divided by the IT equipment power consumption.Power Usage Effectiveness (PUE) has been the basis indicator for evaluating the energy efficiency of data centers, also helps data centers to improve the efficiency of good energy consumption monitoring.What is PUE?

Ensuring optimal heat dissipation in a data center is crucial for peak performance and longevity. Heat is the nemesis of efficiency! High-performance servers generate significant heat, and if not effectively managed, it can lead to system failures and reduced lifespan. Efficient cooling systems help maintain a stable temperature, preventing hardware from overheating and ensuring seamless operations. Why does this matter? Improved heat dissipation not only enhances reliability but also contributes to energy efficiency, reducing operational costs and environmental impact. Investing in top-notch cooling solutions isn't just about energu saving – it's a strategic move for data centers to thrive in a world where every byte and degree counts.KAORI is the largest plate heat exchanger manufacturer in Taiwan and among the top five in the world. It has nearly 30 years of market experience and sales performance in more than 70 countries. In addition to being used in chillers, heat pumps, refrigeration and refrigeration equipment, and fuel cells, plate heat exchangers are also an indispensable core component of the data center cooling system.

Green Hydrogen IndustriesGeneration and Application of Green HydrogenGreen Hydrogen GenerationGreen hydrogen (Green H2) means hydrogen generated from renewable energy (wind, solar, or hydro power), it has zero carbon emission, and is environmental friendly. The most common method to generate hydrogen is water electrolysis, meaning separating hydrogen and oxygen through chemical reaction.How to Utilize Green HydrogenGreen hydrogen is a clean energy that can be utilized in many fields, it replaces fossil fuel, reduces carbon emission and environmental impact. Green hydrogen can be used in the production of chemical products, raw materials, supply power and heating to fuel cell battery. Green hydrogen can even be the direct fuel source for aviation, marine vessel, automobile, and heavy transportation.

Battery Energy Storage System (BESS)Battery Energy Storage System（BESS）is a system that stores energy by electrochemistry, and is one of the technology for energy storage. The advantage of BESS is to improve and stabilize the quality of renewable energy, and adjust peak/down time electricity consumptions. When BESS charges and discharges, proper working temperature has to be maintained. According to different climate, BESS also adopts different thermal management.Common ways for battery cooling: Fan cooling, cold plate, or immersion cooling.System can be cooled by free cooling or low temperature liquid cooling. Free cooling can be done by dry cooler or cooling tower, low temperature liquid cooling can be achieved by chiller or PCW process chiller.BESS may also need heating in certain cold climates, thus introduction of heating/cooling dual system is more energy efficient.

With the advent of the AI era, the rise in computational demands necessitates a symbiotic relationship between high-performance computing and cooling technologies. This trend aligns with the global industry's development, calling for the establishment of more servers to support these computations.High-power chips work continuously in servers. If the heat cannot be dissipated immediately, that will reduce computing efficiency or even IT facilities failure. These crises pose unpredictable risks to customer data, rights, reputation, and operations. Experts emphasize the growing importance of AI across industries, but as computational power expands and data access becomes more frequent, energy consumption becomes a prominent concern. Cooling solutions, heat dissipation, and green computing are gaining significant attention.

Failure Effects of BPHE FreezingBPHE is made by several SUS plates(0.3~0.4mm thickness) with copper brazing. Although its design pressure (normally is 30 or 45 bar) is quite high as well as the burst pressure (more than 5 times the design pressure).  Because the water volume will be expansive when water freeze to ice, the deformation of plate or of the exterior of BPHE will be happened even the break. 

Brazed plate heat exchangers not only come with advantages of high efficiency and compactness, but are also commonly used in commercial or residential applications such as heat pump, #HVAC, and #hydraulic.