APC by Schneider Electric InRow OA and RDU cooling system

The InRow OA and refrigerant distribution unit (RDU) pumped refrigerant cooling system provides an overhead, energy-efficient, refrigerant-based cooling solution for medium to large data centre environments.

Suitable for medium- and high-density applications, the OA captures up to 27 kW of hot IT exhaust air at the source, neutralises it and discharges cool, ambient air. It includes integrated thermal containment, which eliminates mixing of hot and cold air streams. Modular construction, variable speed fans and active response controls are all integrated into the system. The overhead design requires zero white space because it can be mounted on a rack or suspended from the ceiling above the hot aisle.

The refrigerant used in the pumped system is R134a, a non-toxic solution that poses no threat to IT equipment in the event of a leak and it has no ozone depletion potential.

The RDU is capable of providing 160 kW of heat rejection to the InRow OA cooling units. Its modular construction, variable speed pumps and active response controls are integrated into an efficient variable volume pumping system. The RDU has the ability to modulate capacity from 0-100% with no minimum loading requirements and may be placed in the IT environment or in an adjacent location.

The modular piping headers are an integrated part of the mounting structure to simplify installation.

It is claimed to be 30-50% more efficient than traditional raised floor data centre cooling and its flexibility allows easy deployment and redeployment of cooling.