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Further study of Life Cycle Assessment of a high density data center cooling system – Teliasonera’s “Green Room” concept: Identification of improvement possibilities using Life Cycle Assessment (LCA) and discussion about the effect of the choice of Life Cycle Impact Assessment (LCIA) methods on the results
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Environmental Strategies.
2013 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The growing industry of Information and Communication Technology requires higher computing capacity of data centers. The air conditioning in data centers is a key to assure a sustainable computing environment. However, the traditional cooling systems cost large environmental footprints especially on energy consumption and greenhouse gas emissions. As a result, a green innovation of data center cooling solutions is taking place. The telecommunication company Teliasonera is developing a high density data center cooling system - the “Green Room” and has been studying the environmental performance of this system using a Life Cycle approach. As an extension of the previous study, more aspects of the project i.e. the location of the data center, life span, alternative cooling solutions, energy recovery possibilities and uncertainty analysis is explored using Life Cycle Assessment (LCA) methodology. The comparison of locations of the Green Room indicates that the local temperature and electricity production sources are essential factors for the environmental performance of the Green Room. The analysis of the Green Room’s life span reveals that the utilization phase may not always cause the most significant impact during the whole life cycle of the Green Room. If the life span changes, the manufacture phase may predominate the life cycle of the Green Room. The comparative result of alternative cooling technologies addresses that utilizing “natural coolant” (e.g. geo cooling) is a key for sustainable cooling innovation as it could significantly reduce the environmental footprint of the cooling system. Besides, heating a single building (partly) by the waste heat generated from the Green Room could save 30% of cumulative energy input and could reduce more than half of the total environmental impact. Additionally, results uncertainties caused by the choice of different LCIA methods are discussed in the end of the study.

Place, publisher, year, edition, pages
2013. , 55 p.
SoM EX, 2013-03
Keyword [en]
Data center, Cooling system, Telecommunication, Technology and environment, Life cycle assessment (LCA), Life Cycle Impact Assessment (LCIA) method, Sustainable development
National Category
Other Environmental Engineering
URN: urn:nbn:se:kth:diva-117983OAI: diva2:604131
Subject / course
Environmental Strategies
2012-12-10, KTH, Stockholm, 11:45 (English)
Teliasonera's Green Room concept
Available from: 2013-02-08 Created: 2013-02-07 Last updated: 2013-02-08Bibliographically approved

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