DATA CENTRE COOLING
centre’s overall efficiency and EER ratings, reduce emissions and offer an attractive ROI. Legacy systems present their own unique challenges and require innovative solutions. The criticality of the site, logistical issues, redundancy and fast re-start requirements often require a customised approach which not all manufacturers can provide.
The solution comprised of four equally sized 1.1mW chillers using the latest multi-turbocor oil free compressor technology, and an off load and duty assist configuration would ensure the best possible energy savings. The chillers were rigorously performance tested before being shipped to site and re- tested once in situ.
The tests results were positive and met the predicted EER ratings.
Each chiller achieved on average between 6.68 and 7.43 EER under normal use and savings calculated showed a £67K saving per annum on a single chiller and £200K
per annum collectively during sequenced deployment at contracted cooling load, compared to the previous chillers. Based on these results, it is anticipated that customer will save up to £2million over the next 10 years.
A phased approach was adopted for the installation with one chiller installed at a time. The project presented a number of challenges.
Working in a ‘live’ data centre meant that installation and commissioning had to be carried out sensitively so that the client’s customers were not impacted by the replacement. The existing chillers were sited in a basement plantroom, residing in the vaults.
De-commissioning and reducing the
legacy units into small sections for removal was straightforward, but installing the replacement units required a creative approach. Aermec engineers ensured that
not only were the customers’ requirements addressed, but designs were engineered to enable easy access.
To achieve a smooth replacement right
from the outset engineers designed a bespoke chiller frame assembly; arranging the evaporator and condenser shells as a single component and to dimensions that enabled its transfer through the plantroom doors and below the installation pipework, leaving a 5mm tolerance. The new sections and frame were then passed through a space limited to a headroom of only 1435mm. The chillers were transported in component form and re-built on site.
The project took place over a 10-month period and to facilitate the replacement, cryogenics were used to freeze the pipework. The project was challenging but the
customer was able to realise a short term- ROI and a significant environmental benefit, resulting in a very satisfied client.
Swegonair WISE
Demand Contr olled Ventilation with in telligence and simplicity built-in
WISE b egins with our soſtware at the design stage to help identif y the right ven tilation solution for your project. Wireless commissioning of WISE is effortless and SuperWISE provides a real-time system overview
to k eep your project smooth from start to finish and beyond.
Find out mor e about WISE
wise.swegon.com
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