Liquid Cooling Infrastructure for AI Data Centers

Artificial intelligence is changing how data centers are designed. As organizations deploy larger AI models and high performance computing workloads, traditional air cooling systems are reaching their practical limits. Graphics processing units (GPUs) and AI accelerators generate significantly more heat than conventional servers, creating new demands for cooling infrastructure.

This shift has made liquid cooling infrastructure for AI data centers one of the most important considerations during facility design and construction. From custom fabricated pressure vessels to chilled water buffer tanks and cooling water storage systems, every component plays a role in maintaining performance, reliability, and uptime.

At Smith Industries, we fabricate custom ASME pressure vessels and industrial storage tanks that support mission critical cooling systems. As AI data centers continue to evolve, properly designed cooling infrastructure becomes just as important as the computing hardware itself.

Why AI Data Centers Require Liquid Cooling

Traditional enterprise servers often operate within power densities that air cooling can effectively manage. Modern AI servers are very different.

Many AI racks now exceed 50 kilowatts of power, while some advanced GPU deployments surpass 100 kilowatts per rack. The resulting heat output makes conventional air cooling increasingly difficult and less energy efficient.

According to the U.S. Department of Energy, liquid cooling transfers heat much more efficiently than air because water has a significantly greater capacity to absorb and transport heat. This allows facilities to remove large amounts of thermal energy while reducing cooling energy consumption compared to traditional air based systems.

As AI workloads continue to grow, many hyperscale operators are adopting liquid cooling as part of their long term infrastructure strategy.

What Is Liquid Cooling Infrastructure for AI Data Centers?

Liquid cooling infrastructure includes the equipment that circulates cooled liquid throughout the facility to remove heat generated by servers and computing equipment.

Typical infrastructure includes:

• Chilled water buffer tanks 

• Cooling water storage tanks

• Expansion tanks

• ASME pressure vessels

• Heat exchangers

• Pumping systems

• Distribution piping

• Filtration equipment

• Monitoring and control systems

These components work together to maintain consistent temperatures while providing redundancy and reliability throughout the cooling process.

Unlike standard commercial HVAC systems, AI data center cooling systems operate continuously and require precise temperature control to protect mission critical equipment.

How Liquid Cooling Systems Work

Most liquid cooling systems circulate cooled water or specialized coolant through a closed loop.

The process generally includes:

1. Chillers cool the circulating fluid.

2. Pumps distribute coolant throughout the facility.

3. Liquid absorbs heat directly or indirectly from servers.

4. Heated liquid returns to heat exchangers or chillers.

5. The process repeats continuously.

Some facilities use direct to chip cooling, where coolant flows directly across cold plates attached to processors.

Others use rear door heat exchangers or immersion cooling depending on workload requirements.

Regardless of the cooling method, properly fabricated tanks and pressure vessels help stabilize temperatures, maintain system pressure, and improve overall reliability.

The Role of Pressure Vessels

Pressure vessels are an essential part of liquid cooling infrastructure for AI data centers.

These vessels may be used for:

• Expansion control

• Pressure regulation

• Thermal storage

• Hydronic balancing

• System stability

Because cooling systems experience pressure fluctuations as water temperatures change, properly engineered pressure vessels help protect equipment while maintaining consistent operating conditions.

Smith Industries manufactures custom ASME pressure vessels that are designed to meet the demanding requirements of mission critical facilities.

Each vessel is engineered to meet project specifications while complying with applicable industry standards.

Why Buffer Tanks Matter

One of the most important components in AI cooling systems is the chilled water buffer tank.

Buffer tanks increase system water volume, helping stabilize temperatures during rapid changes in cooling demand.

Without adequate storage volume, chillers may cycle excessively, reducing efficiency and increasing equipment wear.

Benefits of chilled water buffer tanks include:

• Improved temperature stability

• Reduced chiller cycling

• Better energy efficiency

• Increased equipment lifespan

• Improved system reliability

As AI workloads fluctuate throughout the day, buffer tanks provide additional flexibility that helps maintain consistent cooling performance.

Cooling Water Storage Tanks Support Reliability

Cooling water storage tanks provide another important layer of protection for mission critical operations.

These tanks can:

• Store reserve cooling capacity

• Support emergency operations

• Assist during maintenance activities

• Improve system redundancy

• Stabilize cooling demand

Because uptime is critical for AI facilities, redundancy is designed into nearly every system.

Custom fabricated storage tanks help ensure cooling systems continue operating even during unexpected events.

Material Selection Matters

Selecting the proper construction materials is critical when designing liquid cooling infrastructure for AI data centers.

Factors engineers evaluate include:

• Corrosion resistance

• Operating pressure

• Water chemistry

• Temperature range

• Service life

• Maintenance requirements

Depending on the application, pressure vessels and storage tanks may be fabricated from carbon steel or stainless steel.

Each material offers unique advantages depending on system requirements and environmental conditions.

Custom fabrication allows engineers to specify exactly what the project requires rather than adapting to standard equipment sizes.

Why Custom Fabrication Is Often the Best Solution

Every AI data center has unique cooling requirements.

Rack density, cooling method, available space, redundancy goals, and project timelines all influence equipment design.

Custom fabricated cooling equipment provides several advantages:

Optimized Capacity

Equipment is designed specifically for the project's required cooling load.

Better Space Utilization

Tanks and vessels can be fabricated to fit mechanical room constraints or outdoor layouts.

Improved Integration

Custom nozzles, supports, connections, and mounting options simplify installation.

Compliance

ASME certified fabrication helps meet project specifications and applicable codes.

Faster Construction

Working with an experienced fabrication partner allows equipment to be manufactured according to project schedules, reducing delays during installation.

Reliability Is the Highest Priority

AI data centers often support cloud computing, machine learning, financial services, healthcare applications, and enterprise operations where downtime can be extremely costly.

According to the U.S. Cybersecurity and Infrastructure Security Agency (CISA), resilient infrastructure depends on designing systems with redundancy, maintenance planning, and operational continuity in mind. Mission critical facilities rely on multiple layers of backup systems to reduce operational risk.

Cooling infrastructure plays a major role in that resilience.

Pressure vessels, buffer tanks, and storage tanks are not simply supporting equipment. They are foundational components that help keep servers operating safely under demanding thermal conditions.

Planning for Future Growth

One of the biggest challenges facing AI operators is uncertainty around future computing demand.

Facilities designed today may need to support significantly higher rack densities within only a few years.

Scalable liquid cooling infrastructure for AI data centers allows operators to expand capacity without completely redesigning mechanical systems.

Custom fabricated equipment provides flexibility for future upgrades by allowing engineers to design systems that accommodate additional cooling loads as infrastructure grows.

Planning for expansion today can reduce future construction costs while minimizing operational disruptions.

Why Smith Industries Supports Mission Critical Projects

As AI data centers continue to evolve, cooling infrastructure will become increasingly sophisticated.

Smith Industries provides custom fabricated pressure vessels, cooling water tanks, buffer tanks, and other industrial vessels designed to meet the demanding requirements of mission critical facilities.

Our experienced fabrication team works closely with engineers, contractors, and owners to manufacture equipment that supports reliable cooling performance, regulatory compliance, and long term durability.

Whether supporting new hyperscale construction or expanding existing facilities, Smith Industries delivers precision fabricated solutions built for the next generation of AI data centers.

Conclusion

The rapid growth of artificial intelligence is transforming how data centers are cooled. Traditional air cooling alone is no longer sufficient for many high density computing environments.

As facilities adopt liquid cooling technologies, custom fabricated pressure vessels, chilled water buffer tanks, and cooling water storage systems become essential parts of reliable infrastructure.

Investing in properly engineered liquid cooling infrastructure for AI data centers helps improve energy efficiency, increase equipment reliability, reduce downtime, and prepare facilities for future growth.

With decades of fabrication expertise and a commitment to quality, Smith Industries helps data center owners build cooling systems capable of supporting the next generation of AI innovation.