An energy-efficient solution

To achieve an enhanced level of energy efficiency compared with other data centres in the Singapore market, the mechanical system provides a flexible and energy-efficient solution using six high-temperature chillers with direct expansion (DX) cooling of outside air to control humidity.

The resulting power usage effectiveness (PUE) of 1.34 makes the data centre one of the most energy efficient in Singapore’s tropical climate. By simplifying the chilled water systems, this resulted in significant savings for Gammon, and ultimately Global Switch.

The innovative electrical solution designed by Aurecon has not previously been implemented in Singapore. The electrical system provides high reliability and flexibility through an 18 x 2 MW diesel rotary uninterruptible power supply (DRUPS) connected to two high-voltage isolated parallel buses.

A distributed redundant low voltage distribution system provides a high level of flexibility for load distribution, and load growth to optimise the available capacity from the high voltage infrastructure.