Chillers & Central Cooling Plant installations at King Khalid International Airport (RUH)

The chilled-water plant is the heart of every Gulf terminal and the single biggest lever on its energy bill. This sub-category covers water- and air-cooled centrifugal, helical-rotary (screw), scroll and oil-free magnetic-bearing chillers, plus the BMS/controls (e.g. Metasys, Tracer SC+) that sequence and optimise them. The defining requirement is high-ambient performance: machines that hold rated capacity and efficiency against 48–52 °C apron air, where standard 35 °C-rated chillers de-rate sharply. Buyers compare IPLV / kW-per-ton, magnetic-bearing vs conventional drivelines, low-GWP refrigerant transition (R-1234ze / R-513A), and AHRI certification. Specifiers also weigh plant resilience, N+1 redundancy and the option to buy chilled water from a district utility instead.

A sprawling 1980s-era masterplan set in desert pink sandstone, RUH was designed by HOK when Riyadh was still a secondary capital. Four decades later, the city has outgrown it. Terminals 1, 2, 3, 4 and 5 now share the load as traffic hit 37.2 million in 2024, and new carrier Riyadh Air prepares to launch before the airport itself is eclipsed by King Salman International just across town.