A Comparative Numerical Study of Effectiveness of Cold Aisle Containment in Data Centers by Varying Rack Porosity Using Computational Fluid Dynamics

Chethana G D; B Sadashivegowda

doi:10.37934/cfdl.16.9.94113

Authors

Chethana G D Department of Mechanical Engineering, Maharaja Institute of Technology Mysore- 571477, Visvesvaraya Technological University, Belagavi, 590018, India
Sadashivegowda Department of Mechanical Engineering, Vidyavardhaka College of Engineering Mysuru-570002, Visvesvaraya Technological University, Belagavi, 590018, India

DOI:

https://doi.org/10.37934/cfdl.16.9.94113

Keywords:

Cold aisle containment, Data center, Numerical study, Porosity

Abstract

Depending on specific needs and workloads, several racks with varied component densities may be used in a data center. As server density increases, porosity decreases, and the opposite is also true. A frequently used method called cold aisle containment separates hot air and cold air flows in data center settings to improve cooling effectiveness. In this paper, the performance of a data center is investigated using computational fluid dynamics, and the influence of porosity on cold aisle containment is evaluated using well-established non-dimensional performance parameters. The value of RTI without containment increased with an increase in porosity and a maximum RTI of 217 was found with a porosity of 0.75. Regardless of the rack number and porosity, containment provides the optimal RTI values. The results indicate that the SHI and RHI values for rack 1 for all porosities, without confinement, are outside of the permissible range and at higher porosities containment has no significant effects on SHI and RHI. RCILO values for racks 2, 3, and 4, with or without containment, fall within the 80-85% range, indicating temperatures below 13°C. RCIHI value is 1 for all cases considered indicating no rack is out of the recommended temperature of 25°C.

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Author Biographies

Chethana G D, Department of Mechanical Engineering, Maharaja Institute of Technology Mysore- 571477, Visvesvaraya Technological University, Belagavi, 590018, India

gdchethan@gmail.com

Sadashivegowda, Department of Mechanical Engineering, Vidyavardhaka College of Engineering Mysuru-570002, Visvesvaraya Technological University, Belagavi, 590018, India

sadasiv_g@hotmail.com

References

Joshi, Yogendra, and Pramod Kumar, eds. Energy efficient thermal management of data centers. Springer Science & Business Media, 2012. https://doi.org/10.1007/978-1-4419-7124-1

Patankar, Suhas V. "Airflow and cooling in a data center." (2010): 073001. https://doi.org/10.1115/1.4000703

Erden, Hamza Salih, H. Ezzat Khalifa, and Roger R. Schmidt. "Room-level transient CFD modeling of rack shutdown." In International Electronic Packaging Technical Conference and Exhibition, vol. 55768, p. V002T09A024. American Society of Mechanical Engineers, 2013. https://doi.org/10.1115/IPACK2013-73282

Rasmussen, Neil. "Avoidable mistakes that compromise cooling performance in data centers and network rooms." White paper 49 (2003): 2003-0.

Watson, Bryony, and Vinod Kumar Venkiteswaran. "Universal cooling of data centres: a CFD analysis." Energy Procedia 142 (2017): 2711-2720. https://doi.org/10.1016/j.egypro.2017.12.215

Fulpagare, Yogesh, and Atul Bhargav. "Advances in data center thermal management." Renewable and Sustainable Energy Reviews 43 (2015): 981-996. https://doi.org/10.1016/j.rser.2014.11.056

Nada SA, Elfeky KE, Attia AMA, Alshaer WG (2017) Experimental parametric study of servers cooling management in data centers buildings. Heat Mass Transfer 53:2083–2097. https://doi.org/10.1007/s00231-017-1966-y

Oró, Eduard, Albert Garcia, and Jaume Salom. "Experimental and numerical analysis of the air management in a data centre in Spain." Energy and Buildings 116 (2016): 553-561. https://doi.org/10.1016/j.enbuild.2016.01.037

Cho, Jinkyun, and Byungseon Sean Kim. "Evaluation of air management system's thermal performance for superior cooling efficiency in high-density data centers." Energy and buildings 43, no. 9 (2011): 2145-2155. https://doi.org/10.1016/j.enbuild.2011.04.025

Cho, Jinkyun, Jesang Woo, Beungyong Park, and Taesub Lim. "A Comparative CFD Study of Two Air Distribution Systems with Hot Aisle Containment in High-Density Data Centers." Energies 13, no. 22 (2020): 6147. https://doi.org/10.3390/en13226147

Shrivastava, Saurabh, Bahgat Sammakia, Roger Schmidt, and Madhusudan Iyengar. "Comparative analysis of different data center airflow management configurations." In International Electronic Packaging Technical Conference and Exhibition, vol. 42002, pp. 329-336. 2005. https://doi.org/10.1115/IPACK2005-73234

Lee, Yee-Ting, Chih-Yung Wen, Yang-Cheng Shih, Zhengtong Li, and An-Shik Yang. "Numerical and experimental investigations on thermal management for data center with cold aisle containment configuration." Applied Energy 307 (2022): 118213. https://doi.org/10.1016/j.apenergy.2021.118213

Nada, S. A., and K. E. Elfeky. "Experimental investigations of thermal managements solutions in data centers buildings for different arrangements of cold aisles containments." Journal of building engineering 5 (2016): 41-49. https://doi.org/10.1016/j.jobe.2015.11.001

Gondipalli, Srujan, Siddharth Bhopte, Bahgat Sammakia, Madhusudan K. Iyengar, and Roger Schmidt. "Effect of isolating cold aisles on rack inlet temperature." In 2008 11th Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, pp. 1247-1254. IEEE, 2008. https://doi.org/10.1109/ITHERM.2008.4544403

Choo, Kyosung, Renan Manozzo Galante, and Michael M. Ohadi. "Energy consumption analysis of a medium-size primary data center in an academic campus." Energy and Buildings 76 (2014): 414-421. https://doi.org/10.1016/j.enbuild.2014.02.042

Muralidharan, Bharathkrishnan, Saurabh K. Shrivastava, Mahmoud Ibrahim, Sami A. Alkharabsheh, and Bahgat G. Sammakia. "Impact of cold aisle containment on thermal performance of data center." In International Electronic Packaging Technical Conference and Exhibition, vol. 55768, p. V002T09A016. American Society of Mechanical Engineers, 2013. https://doi.org/10.1115/IPACK2013-73201

Goren, Brent. "Cold Aisle Containment System Performance Simulation." Eaton Corporation, Data Center White Paper (2011): 1-4.

Wang, Cheng-Hao, Yeng-Yung Tsui, and Chi-Chuan Wang. "On cold-aisle containment of a container datacenter." Applied Thermal Engineering 112 (2017): 133-142. https://doi.org/10.1016/j.applthermaleng.2016.10.089

Sheth, Deep V., and Sandip K. Saha. "Numerical study of thermal management of data centre using porous medium approach." Journal of Building Engineering 22 (2019): 200-215. https://doi.org/10.1016/j.jobe.2018.12.012

Yang, Tien-Fu, Yu-Chun Chen, Bo-Lin Chen, Chun-Han Li, and Wei-Mon Yan. "Numerical study of fluid flow and temperature distributions in a data center." Case Studies in Thermal Engineering 28 (2021): 101405. https://doi.org/10.1016/j.csite.2021.101405

Saiyad, Anashusen, Asif Patel, Yogesh Fulpagare, and Atul Bhargav. "Predictive modeling of thermal parameters inside the raised floor plenum data center using Artificial Neural Networks." Journal of Building engineering 42 (2021): 102397. https://doi.org/10.1016/j.jobe.2021.102397

Liu, Wei, Song Lian, Xin Fang, Zhenyu Shang, Hao Wu, Hao Zhu, and Simon Hu. "An open-source and experimentally guided CFD strategy for predicting air distribution in data centers with air-cooling." Building and Environment 242 (2023): 110542. https://doi.org/10.1016/j.buildenv.2023.110542

Jin, Chaoqiang, Xuelian Bai, and Chao Yang. "Effects of airflow on the thermal environment and energy efficiency in raised-floor data centers: A review." Science of The Total Environment 695 (2019): 133801. https://doi.org/10.1016/j.scitotenv.2019.133801

Ahmadi, Vahid Ebrahimpour, and Hamza Salih Erden. "A parametric CFD study of computer room air handling bypass in air-cooled data centers." Applied Thermal Engineering 166 (2020): 114685. https://doi.org/10.1016/j.applthermaleng.2019.114685

Narasimhan, Arunn, and B. V. K. Reddy. "Laminar forced convection in a heat generating bi-disperse porous medium channel." International Journal of Heat and Mass Transfer 54, no. 1-3 (2011): 636-644. https://doi.org/10.1016/j.ijheatmasstransfer.2010.08.022

Capozzoli, Alfonso, Gianluca Serale, Lucia Liuzzo, and Marta Chinnici. "Thermal metrics for data centers: A critical review." Energy Procedia 62 (2014): 391-400. https://doi.org/10.1016/j.egypro.2014.12.401

Huang, Zhilin, Kaijun Dong, Qin Sun, Lin Su, and Tengqing Liu. "Numerical simulation and comparative analysis of different airflow distributions in data centers." Procedia Engineering 205 (2017): 2378-2385. https://doi.org/10.1016/j.proeng.2017.09.854

Grishina, Anastasiia, Marta Chinnici, A-L. Kor, Davide De Chiara, Guido Guarnieri, Eric Rondeau, and J-P. Georges. "Thermal awareness to enhance data center energy efficiency." Cleaner Engineering and Technology 6 (2022): 100409. https://doi.org/10.1016/j.clet.2022.100409

Herrlin, Magunus K. "Airflow and cooling performance of data centers: Two performance metrics." ASHRAE transactions 114, no. 2 (2008): 182-187.

Cho, Jinkyun, and Jesang Woo. "Development and experimental study of an independent row-based cooling system for improving thermal performance of a data center." Applied thermal engineering 169 (2020): 114857. https://doi.org/10.1016/j.applthermaleng.2019.114857

Xie, Mengxiao, Jian Wang, and Jinxiang Liu. "Evaluation metrics of thermal management in data centers based on exergy analysis." Applied Thermal Engineering 147 (2019): 1083-1095. https://doi.org/10.1016/j.applthermaleng.2018.10.137

Sharma, Ratnesh, Cullen Bash, and Chandrakant Patel. "Dimensionless parameters for evaluation of thermal design and performance of large-scale data centers." In 8th AIAA/ASME joint thermophysics and heat transfer conference, p. 3091. 2002. https://doi.org/10.2514/6.2002-3091

Herrlin, Magnus K. "Rack cooling effectiveness in data centers and telecom central offices: the rack cooling index (RCI)." Transactions-American Society of Heating Refrigerating and Air conditioning Engineers 111, no. 2 (2005): 725.

Fernando, Heshan, Jayantha Siriwardana, and Saman Halgamuge. "Can a data center heat-flow model be scaled down?." In 2012 IEEE 6th International Conference on Information and Automation for Sustainability, pp. 273-278. IEEE, 2012. https://doi.org/10.1109/ICIAFS.2012.6419916

Meng, Xiongzhuang, Junli Zhou, Xuejiao Zhang, Zhiwen Luo, Hui Gong, and Ting Gan. "Optimization of the thermal environment of a small-scale data center in China." Energy 196 (2020): 117080. https://doi.org/10.1016/j.energy.2020.117080

Abbas, A. M., A. S. Huzayyin, T. A. Mouneer, and S. A. Nada. "Effect of data center servers’ power density on the decision of using in-row cooling or perimeter cooling." Alexandria Engineering Journal 60, no. 4 (2021): 3855-3867. https://doi.org/10.1016/j.aej.2021.02.051

Anderson, Dale, John C. Tannehill, Richard H. Pletcher, Ramakanth Munipalli, and Vijaya Shankar. Computational fluid mechanics and heat transfer. CRC press, 2020. https://doi.org/10.1201/9781351124027

Yuan, Xiaolei, Xuetao Zhou, Jinxiang Liu, Yu Wang, and Xinjie Xu. "Experimental and numerical investigation of an airflow management system in data center with lower-side terminal baffles for servers." Building and Environment 155 (2019): 308-319. https://doi.org/10.1016/j.buildenv.2019.03.039

Hoang, My Lan, Pieter Verboven, Josse De Baerdemaeker, and B. M. Nicolaı. "Analysis of the air flow in a cold store by means of computational fluid dynamics." International Journal of Refrigeration 23, no. 2 (2000): 127-140. https://doi.org/10.1016/S0140-7007(99)00043-2

Macedo, Diogo GCS, Pedro D. Gaspar, Pedro D. Silva, Miguel T. Covas, and Radu Godina. "Improving Airflow and Thermal Distribution in a Real Data Centre Room Through Computational Fluid Dynamics Modeling." In 2019 8th International Conference on Industrial Technology and Management (ICITM), pp. 165-169. IEEE, 2019. https://doi.org/10.1109/ICITM.2019.8710689

Nada, S. A., M. A. Said, and M. A. Rady. "CFD investigations of data centers’ thermal performance for different configurations of CRACs units and aisles separation." Alexandria engineering journal 55, no. 2 (2016): 959-971.https://doi.org/10.1016/j.aej.2016.02.025