There are principally two types of data center cooling solutions: computer room air conditioners (CRACs) and computer room air handlers (CRAHs). Which technology is the best choice for each installation depends on various factors, including climate and data center size and configuration, and that's why Trane offers catalog, semi-custom or customized cooling solutions.
Trane's CRAC units are direct expansion (DX) systems in which air used for cooling the room passes over a cooling coil filled with refrigerant. DX systems operate in a continuous closed loop using a compressor and refrigerant gas to transfer heat from the computer room’s evaporator to the outdoors through either air, water, or glycol. CRACs have a low acquisition cost; offer single- or multi-stage compressor arrangements, including tandem configurations; and they provide dehumidification, which lowers the risk of IT equipment corrosion and prevents electrostatic discharge.