LONDON, 21 OCTOBER 2010 – Hitachi Europe Ltd. has today completed delivery of its Refrigerant Natural Circulation (NC) Cooling system as part of its Modular High Density Cooling Solution for TELEHOUSE'S recently opened facility TELEHOUSE LONDON Docklands West, in London, UK.

Since the CRC Energy Efficiency Scheme (also known as the Carbon Reduction Commitment) was introduced in April 2010, UK companies are being encouraged to actively reduce their CO2 emissions. Responding to the scheme, TELEHOUSE has optimised efficient electricity utilisation across its Data Centres, proven by its recent certification to the Carbon Trust Standard. As part of TELEHOUSE's ongoing commitment to reducing its environmental impact the company implemented a much appraised waste heat export strategy within TELEHOUSE LONDON Docklands West, which sees TELEHOUSE help UK businesses achieve their green commitments. The deployment of Hitachi's Modular High Density Cooling Solutions within TELEHOUSE's Data Centres constitutes the natural next step to this commitment.

Hitachi delivered the solution comprising of Hitachi's NC Rear Doors as main cooling units plus NC Racks as redundant units. No traditional CRAC units were installed, as the IT racks are cooled by NC units only. This solution will considerably decrease power consumption in comparison to traditional water-based cooling systems. Power consumption for the delivered NC solution (11 NC Doors and 4 NC Racks) is approximately 5.65kW while cooling a capacity of 110kW. The NC Racks are only necessary for redundancy and without these the solution continues to deliver the required cooling and yet consumes only 2.53kW (230W per NC Door and 780W per NC Rack). These significant power efficiencies continue across varying IT loads while maintaining environmental conditions. The net result is the carbon footprint and energy bill for TELEHOUSE has significantly been reduced for this high-density offering. The existing facility provides cooling capacities between 3-6kW per rack, whereas with the Hitachi solution as much as 10kW per rack is now achievable.

The installation at TELEHOUSE resides within an IT cage (7.8m×3.6m=28m²) and includes the following:

11 IT Racks each attached with an NC Rear Doors (10kW Cooling Capacity per unit)

4 NC Racks (22kW Cooling Capacity per unit)

4 Shell & Tube Heat Exchangers (2 × 60kW capacity, 2 × 44kW capacity)

Piping and Three-port regulating valves on the chilled water side for managing refrigerant temperatures

Features of units:

No pumps or compressors thereby reducing power consumption levels

Automatic and manual settings for variable speed fans and regulating refrigerant valve for managing different IT capacities/heat loads

The NC Doors and NC Racks are piped and cooled via an external chiller system providing chilled water to requisite heat exchangers

Tokuji Mitsui, Managing Director at TELEHOUSE said: ‘As a global company with an extensive customer base in Asia, the US, Africa and Europe, we take pride in offering dependable data centres which are at the forefront of issues driving the IT sector. Our customers have increasing requirements for high density areas with a small energy impact and we found Hitachi's solution to be the best fit for this purpose”.

Bob Harris, Technical Director at TELEHOUSE said: “For our new data centre facility in the Docklands, we were looking for a solution to fit our strict set of requirements – scalable, reliable technology with a small footprint, which at the same time delivers against our high requirements for power efficiency (which is independently validated by a recognised industry body). The Hitachi offering ticked all the boxes. While we have only just finished the installation, we are extremely pleased that the space occupied by this solution is already in high demand with our customers”.

Akira Shimizu, Managing Director at Hitachi Europe said: “Working with TELEHOUSE, the Eco Data Centre team here at Hitachi could prove that we deliver on the promises of our company credo: contributing to society through technology. Our Eco Data Centre solutions are part of what we call Social Innovation Business, for which we are using synergies within the company to provide technology to help lessen impact on the environment. At the same time, it is important to us that our customers, like TELEHOUSE, see a direct effect on their bottom line in terms of energy and cost savings”.

Ian Blond, Senior Manager of Data Centre Group said: “We are excited that we have addressed TELEHOUSE's requirements and provided a solution that delivers significant power savings for varying IT loads while occupying a small footprint. We proved that this solution fits nicely within an existing facility and that the installation has little to no impact on existing operations during fit-out. Hitachi looks forward to TELEHOUSE reaping the benefits from this solution…their success is our success”.