Abstract
In data center, using outdoor low-temperature air as free cooling is one of the most effective ways to increase the energy efficiency of the heat source system. At the same time, optimizing the indoor air organization to reduce the energy consumption of fans is considered as another effective way of saving energy. In this study, a new cooling system for data center by using evaporation and condensation of CO2 as free cooling is proposed. Also, the system is optimized by organizing the cooling airflow with natural convection and small distributed fans on the indoor side. This paper mainly focuses on optimization of cooling airflow, especially that around racks. CFD is used to analyze the temperature distributions and flow distributions by adjusting power of small distributed fans and shape of the cooling unit. The results show that small distributed fans and natural convection can generate the desired distribution of cooling airflow.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
ASHRAE: Thermal Guidelines for Data Processing Environments, 1st edn. ASHRAE, Atlanta (2004)
Akhmad, R.I., et al.: Optimization of cooling system for data center case study: PAU ITB data center. Procedia Eng. 170, 552–557 (2017). (Engineering Physics International Conference)
Aya, T., et al.: Energy conservation effect in data centers with hybrid ventilation system: (part 3) optimization of air-conditioning system by CFD analysis, pp. 773–774. Architectural Institute of Japan (2012)
Caifeng, G., et al.: Investigation of airflow pattern of a typical data center by CFD Simulation. In: International Building Physics Conference, pp. 2687–2693 (2015)
Cisco: Cisco Global Cloud Index: Forecast and Methodology, 2016–2021. White Paper prepared by Cisco (2018)
Eduard, O., et al.: Overview of direct air free cooling and thermal energy storage potential energy savings in data centres. Appl. Therm. Eng. 85, 100–110 (2015)
Herrlin, M.: Rack cooling effectiveness in data centers and telecom central offices: the Rack cooling index (RCI). ASHRAE Transactions, vol. 111, Part 2 (2005)
Herrlin, M.: Airflow and cooling performance of data centers: two performance metrics. ASHRAE Transactions, vol. 114, Part 2 (2008)
Masatoshi, O., et al.: Cooling control of modular data center utilizing fresh air in consideration of ICT equipment temperature management and energy saving based on model predictive control. Trans. Soc. Instrum. Control Eng. 51(8), 561–569 (2015)
Noriyuku, T., et al.: A study on operation performance of a data center with air-side economizer. Architectural Institute of Japan, pp. 1297–1298 (2013)
Taku, S., et al.: Evaluation of the regional effects of refrigerate natural circulation free cooling coil in server rooms. Architectural Institute of Japan, pp. 1113–1114 (2015)
Acknowledgements
This research was supported by Ministry of Education, Culture, Sports, Science, and Technology-JAPAN, Joint Usage/Research Center (16163004).
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Zhang, W., Li, H., Bai, Y., Wang, Z. (2020). Optimization of Cooling Airflow in Data Center by CFD Analysis in a New Energy Efficient Cooling System Using CO2 as Cooling Medium. In: Wang, Z., Zhu, Y., Wang, F., Wang, P., Shen, C., Liu, J. (eds) Proceedings of the 11th International Symposium on Heating, Ventilation and Air Conditioning (ISHVAC 2019). ISHVAC 2019. Environmental Science and Engineering(). Springer, Singapore. https://doi.org/10.1007/978-981-13-9528-4_119
Download citation
DOI: https://doi.org/10.1007/978-981-13-9528-4_119
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-9527-7
Online ISBN: 978-981-13-9528-4
eBook Packages: Earth and Environmental ScienceEarth and Environmental Science (R0)