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One of Aermec’s leading mission critical customers is taking advantage of super-efficient compressor technologies to reduce their carbon footprint. EER ratings have been boosted enabling the annual energy bill to be reduced so that over the next 10 years the company can expect to save £200K annually.
Challenge
The carrier neutral co-location site offers tailored solutions from office space to suites with cages, rack cabinets, dedicated servers, virtual servers as well as the hosting of individual servers and had used their existing cooling system for over 20 years.
A detailed analysis revealed that the chillers were unequal in size and making sequencing for N+1 resilience difficult to achieve. The criticality of the site also required fast re start.
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.
Standard chillers were not suitable, nor could they deliver the required energy savings. Restricted access and presented a number of significant obstacles to overcome.
Solution
Working collaboratively, the customer and its partners developed a bespoke cooling strategy using the latest technologies that would improve the data centre’s overall efficiency and EER ratings, reduce emissions and offer an attractive ROI.
The solution comprised 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.
Working in a ‘live’ data centre meant that installation and commissioning had to be carried out sensitively, so a phased approach was adopted. The existing chillers sited in a basement plantroom, residing in the vaults were removed in small sections. Installing the replacement units required a creative approach.
Aermec engineers designed a bespoke chiller frame assembly, arranging the evaporator and condenser shells as a single component with dimensions that enabled their 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.
Result
The chillers had been rigorously performance tested before being shipped to site and re-tested once in situ. The tests results were impressive, meeting the predicted EER ratings. Each of the chillers achieve on average between 6.68 and 7.43 EER under normal use with 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. Reliable cooling is a critical and an essential part of any data centre’s infrastructure, but a well-designed cooling strategy can reap dividends. The customer expects to save up to £2million over the next 10 years.
Four 1.1MW super-efficient chillers with Turbocor compressors for mission critical coolingN+1 resilienceBoosted EER ratings, averaging 6.68 and 7.43 EER per chillerFast re-startAnnual savings of £200K
Being a significant player in the European air conditioning market for over 60 years, we are dedicated to the development and testing of our products and the value they bring to our customers. Not just at install, but the lifetime value of an Aermec installation. We believe in the importance of continual research and development, with particular emphasis on rigorous testing of every chiller and heat pump after its assembly, before it is dispatched.
Registered in England Company No. 3112873
