Preliminary Analysis of Energy Efficiency in Data Center: Case Study

Authors: Xiaoshu Lu, Tao Lu, Matias Remes, Martti Viljanen

Abstract:

As the data-driven economy is growing faster than ever and the demand for energy is being spurred, we are facing unprecedented challenges of improving energy efficiency in data centers. Effectively maximizing energy efficiency or minimising the cooling energy demand is becoming pervasive for data centers. This paper investigates overall energy consumption and the energy efficiency of cooling system for a data center in Finland as a case study. The power, cooling and energy consumption characteristics and operation condition of facilities are examined and analysed. Potential energy and cooling saving opportunities are identified and further suggestions for improving the performance of cooling system are put forward. Results are presented as a comprehensive evaluation of both the energy performance and good practices of energy efficient cooling operations for the data center. Utilization of an energy recovery concept for cooling system is proposed. The conclusion we can draw is that even though the analysed data center demonstrated relatively high energy efficiency, based on its power usage effectiveness value, there is still a significant potential for energy saving from its cooling systems.

Keywords: Data center, case study, cooling system, energyefficiency.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1062726

References:

[1] K. Kant, "Data center evolution: A tutorial on state of the art, issues, and challenges", Computer Networks, vol. 53, pp 2939-2965, 2009.
[2] ASHRAE, Design Considerations for Datacom Equipment Centers, Atlanta: American Society of Heating, Refrigerating and Air- Conditioning Engineers, INC., 2009.
[3] N. Rasmussen, "Air distribution architecture options for mission critical facilities", American Power Conversion White Paper #55, 2003.
[4] T.D. Boucher, D.M. Auslander, C.E. Bash, C.C. Federspiel, and C.D. Patel, "Viability of dynamic cooling control in a data center environment Therm 2004", The Ninth Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, vol. 1, pp. 593 - 600, 2004.
[5] ASHRAE, Thermal Guidelines for Data Processing Environments, Refrigerating and Air-Conditioning Engineers, INC, 2009.
[6] C.E. Bash, C.D. Patel and R.K. Sharma, "Efficient Thermal Management of Data Centers- Immediate and Long-Term Research Needs", Intl. J. HVAC&R Res. vol. 9, pp. 137-152, 2003.
[7] M.K. Herrlin, Improved Data Center Energy Efficiency and Thermal Performance by Advanced Airflow Analysis. Digital Power Forum: San Francisco, CA, US, 2007.