25 Apr 2024

Secure I.T. Environments Ltd (SITE), one of the UK’s design and build companies for modular, containerized, and micro data centers, has announced the completion of data center cooling upgrades at Royal Devon University Healthcare, NHS Foundation Trust, that will dramatically reduce energy costs, achieving ROI in under three years.

free cooling solution

The works, which are the latest in a series of projects SITE has conducted for the trust in recent years, replace existing cooling infrastructure with three new indoor units that improve efficiency.

The free cooling solution, allows the data center to operate in a higher temperature-free cooling configuration for a greater proportion of the year, taking advantage of ambient temperatures and lowering running costs. 

FreeCool circuit 

The new installation is projected to enable the data center to achieve a PUE of 1.14

Each unit combines direct expansion air cooling and an energy-efficient FreeCool circuit, as well as including built-in compressors for the direct expansion circuit.

External Hybrid Heat Rejection (HHR) units were also fitted on-site. The new installation is projected to enable the data center to achieve a PUE of 1.14 and a Cooling PUE of 1.10.

ASHRAE TC9.9 2016 thermal guidelines

Chris Wellfair, Projects Director at Secure I.T. Environments, said, “The primary source of operating expenditure (OPEX) for data centers is electricity. While maintaining the climate conditions within a data center is critical, the ASHRAE TC9.9 2016 thermal guidelines now give confidence to operators that they can control the indoor temperature at higher levels."

He adds, "This combined with the efficiencies gained with new equipment will dramatically lower energy costs at RDEF and achieve a return on investment in under three years.”

phase wise installation

The installation was conducted over three phases, ensuring the data center could remain live supporting hospital and patient services. 

Secure I.T. Environments was responsible for the decommissioning of existing units, and installation of new equipment, including electrical works, configuration, and testing.