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The type of air conditioning methods and equipment used is determined by the building occupancy. For example, office areas would typically use HVAC equipment with distribution ducting equipped with fans, cooling and heating coils, humidity control equipment, and necessary filters. While in manufacturing areas, supply fans with inlet filters direct air through steam, or glycol heating coils in cold climates.
On the wet end of paper machines where exhaust air streams contain large amounts of water and fiber particles, separators may be used to separate water droplets and contaminants from the exhaust air stream before entering the fan. Separators are essential to prevent ice formation on building roofs in cold climates.