Part of the day: Dry coolers, adiabatic/evaporative units, cooling towers, fans & motors

Assembled by the nightly build from this catalog’s own entry for Dry coolers, adiabatic/evaporative units, cooling towers, fans & motors (6.02, Layer 6 — Facility cooling & HVAC). The tables below are rebuilt every night; published 2026-10-16.

Dry coolers, adiabatic/evaporative units, and cooling towers reject heat picked up by the facility water loop to outside air, driven by fans and motors.

This equipment sits at the end of the facility cooling chain, rejecting heat that chillers (6.01) concentrated or, in free-cooling designs, heat drawn straight off the facility water loop (6.05). The choice among dry (air-only), adiabatic (evaporative-assisted), and wet cooling-tower designs trades water consumption against fan energy and footprint, a tradeoff drawing more scrutiny as campuses grow and site water rights come under pressure — see water treatment and reuse (6.06). AI campuses’ round-the-clock, weather-insensitive load makes free-cooling hours more valuable than in a conventional building, pushing designs toward larger dry-cooler and adiabatic arrays that can carry more of the year without compressors. Fans and motors are a distinct, high-count sub-component here, sized for continuous duty and increasingly specified with variable-speed drives for part-load efficiency. Investors should track cooling-tower and dry-cooler capacity backlogs alongside chillers, and the split between water-intensive and water-free designs on new campuses, since that choice reshapes both the bill of materials and the number of large fans a given site needs.

AI delta: Round-the-clock AI load raises the number of full-load hours this equipment runs and makes water-free or low-water dry and adiabatic designs more valuable at sites where water rights or drought risk constrain wet cooling towers.

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