Liquid Cooling Infrastructure Coordination in Texas

A boil-water advisory in Austin from October 22 to 29, 2018, issued after heavy rain following Hurricane Sergio and the opening of four floodgates at Mansfield Dam, is the sort of event a liquid-cooled data center plans for. Liquid cooling moves heat from the chip or the rack into a closed loop of water or coolant, and that loop is only as reliable as the supply that fills it, the treatment that keeps it clean and the pumps that move it. A week of degraded municipal water can reach a data hall through the makeup line.

Liquid cooling infrastructure coordination is the work of fitting those loops into a building that was drawn for air. It includes the primary loop from the plant, the heat exchangers that separate it from the secondary loop, the pumps, the distribution piping to each row, the leak detection and the commissioning that proves every connection holds. It touches the mechanical contractor, the electrical contractor, the structure, the controls and the rack supplier at once.

We coordinate those pieces and build the physical work that supports them, so that the loops are installed clean, tested in stages and energized only when each one has passed.

Liquid cooling projects fail at interfaces: between the plant and the building, between the building's pipe and the rack manufacturer's connection, between the controls vendor and the pump supplier. We begin by listing every interface, assigning an owner to each one and recording what each side promises. The list becomes a coordination matrix that follows the project from design through testing.

We also run the coordination in a shared model. Large pipe, structural supports, cable tray, busway and containment compete for the same overhead and floor space, and clashes found in the model cost far less than clashes found in the field. Our AI and high-density data halls work shows how rack density sets pipe size, and chiller and cooling plant pads addresses the other end of the loop.

Energy rules frame the cooling design. The State Energy Conservation Office lists ASHRAE Standard 90.1 as the minimum energy standard for state-funded new construction and major renovation, with the IECC as an alternative, and it continues to use the IECC as the adopted energy code for the state. Data center cooling is engineered far beyond those minimums, but the codes still define reporting and envelope expectations, and public owners must meet them.

Water is the other framing item. Proposition 4, approved by Texas voters in November 2025, directs up to $1 billion a year starting in 2027 toward water supply projects. For a liquid-cooled plant, makeup water, treatment and discharge are real operating items, and we advise owners to confirm supply and quality with the water provider before the loop design is fixed, not after the pipe is in the ground.

The primary loop runs from the chillers or dry coolers to the heat exchangers, often through large-diameter piping in trenches, pipe racks or the building structure. The secondary loop runs from the exchangers to the distribution at each row, where manifolds, valves and flexible connections serve individual racks or cold plates. Between them are pumps, expansion tanks, filtration, chemical treatment and monitoring.

Our scope covers the civil and structural support: pipe supports, trench and pit work, pads for pumps and skids, floor depressions or curbs, drains and penetrations. The mechanical contractor installs and tests the piping, and we coordinate the sequence with the data hall fit-out trades. We also coordinate with integrated systems commissioning so that flushing and filling, pressure tests and load tests are scheduled together.

Cleanliness decides whether a liquid loop works. Pipe is capped at the shop and kept capped on site, joints are made by qualified crews and the system is flushed and filtered before it is connected to any rack. Fluid quality is measured and recorded. A single contamination event can clog a cold plate, so the flushing plan and the acceptance criteria are written before the pipe is hung.

Water and electricity share the room, so leak detection is part of the design. Sensors sit under pipe runs and at connection points, drip trays catch small leaks and shutoff valves isolate a row. We test the detection and shutoff before any rack is connected. Workers are briefed on wet-work procedures and lockout, and the owner's operations team learns how to respond to an alarm. For the standards we follow on dust and protection, see construction cleanliness and safety.

Liquid cooling usually sits within a larger program. An AI training campus may carry thousands of racks on liquid loops, so the plant and distribution are repeated across buildings. Owners in the hyperscale cloud provider market often standardize the design and ask us to adapt it to each site's water and ground conditions.

Smaller owners might retrofit liquid cooling into an existing hall, which brings a different set of challenges: limited ceiling space, live racks nearby and a need to keep the hall operating while piping is installed. That scenario is covered under existing data center retrofit and expansion. For owners comparing Texas sites, the Hill Country and capital region around Austin shows how water events and growth interact.

Send the rack density, the cooling approach and the plant concept. We will return an interface matrix, a pipe and support scope and a flushing and testing sequence. If you are still choosing between air and liquid, we can price the building both ways.

What is the difference between direct-to-chip and immersion cooling?

Direct-to-chip systems circulate liquid through cold plates on the processors, and the rest of the rack is still air-cooled. Immersion systems submerge the equipment in fluid. Each needs different piping, floor loading, containment and maintenance access. We coordinate the building to the chosen approach and the rack supplier's requirements.

How do you keep a liquid loop clean?

By protecting pipe from the shop to the site, flushing and filtering the system, measuring fluid quality and keeping the loop closed during work. We write the cleanliness requirements into the plan before the pipe is installed and record the results for the owner.

What if the building was designed for air?

It can often be adapted, but the ceiling space, floor loading and plant capacity must be checked. We review the structure and the plant, identify what needs to change and phase the work so the hall keeps operating where possible.

Who tests the system?

The mechanical contractor tests the pipe and the commissioning team tests the loops and the integrated system under load. We coordinate the sequence and keep the records. Pressure tests, flushing and leak detection tests come before any rack is connected.

How does water quality affect the design?

The makeup water's hardness, chemistry and reliability decide the treatment and the filtration, and a supply interruption decides whether storage is needed. We encourage owners to confirm water quality and availability with the provider early, because it changes the plant and the piping.