Data Center Heat Rejection: Indirect Air-Side Economizer Cycle

The electric power consumed to manage our digital dependency is growing, and so is the resulting by-product: heat. This article explores a cooling/heat rejection strategy that is gaining acceptance and achieves a balance of reliability and energy efficiency, the indirect air-side economizer (IASE) system. The IASE uses an air-to-air heat exchanger (HX) to transfer data center heat to a separate outdoor airstream (scavenger air).