Chillers & Central Cooling Plant installations at King Fahd International Airport (DMM)

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.

Covering 776 square kilometres, DMM is the largest airport site in the world by land area — an absurdly oversized template that includes its own Aramco terminal and Royal pavilion. For years it punched below its weight; now it is catching up, with 13.2 million passengers in 2024 and a new masterplan announced in 2023 to lift capacity to 40 mppa. Riyadh Air and a buoyant Eastern Province economy are reshaping the traffic curve.