Airflow management and energy saving potentials at a high-density data center with stepped-like server placement

2021 ◽  
pp. 1-14
Author(s):  
Xiaolei Yuan ◽  
Yumin Liang ◽  
Yiqun Pan ◽  
Risto Kosonen ◽  
Yu Wang
Keyword(s):  
Energy Saving ◽  
Data Center ◽  
High Density ◽  
Density Data ◽  
Server Placement

25-Gb/s Clocked Pluggable Optics for High-Density Data Center Interconnections

2018 ◽  
Vol 65 (10) ◽  
pp. 1395-1399 ◽  
Author(s):  
Gyu-Seob Jeong ◽  
Jeongho Hwang ◽  
Hong-Seok Choi ◽  
Hyungrok Do ◽  
Daehyun Koh ◽  
...  
Keyword(s):  
Data Center ◽  
High Density ◽  
Density Data

Air Flow Pattern and Path Flow Simulation of Airborne Particulate Contaminants in a High-Density Data Center Utilizing Airside Economization

2018 ◽  
Author(s):  
Gautham Thirunavakkarasu ◽  
Satyam Saini ◽  
Jimil Shah ◽  
Dereje Agonafer
Keyword(s):  
Data Center ◽  
Carbon Particle ◽  
High Density ◽  
Submicron Particles ◽  
Air Cooling ◽  
Density Data ◽  
Particulate Contamination ◽  
Free Air ◽  
First Choice ◽  
Particulate Contaminants

The percentage of the energy used by data centers for cooling their equipment has been on the rise. With that, there has been a necessity for exploring new and more efficient methods like airside economization, both from an engineering as well as business point of view, to contain this energy demand. Air cooling especially, free air cooling has always been the first choice for IT companies to cool their equipment. But, it has its downside as well. As per ASHRAE standard (2009b), the air which is entering the data center should be continuously filtered with MERV 11 or preferably MERV 13 filters and the air which is inside the data center should be clean as per ISO class 8. The objective of this study is to design a model data center and simulate the flow path with the help of 6sigma room analysis software. A high-density data center was modelled for both hot aisle and cold aisle containment configurations. The particles taken into consideration for modelling were spherical in shape and of diameters 0.05, 0.1 and 1 micron. The physical properties of the submicron particles have been assumed to be same as that of air. For heavier particles of 1 micron in size, the properties of dense carbon particle are chosen for simulating particulate contamination in a data center. The Computer Room Air Conditioning unit is modelled as the source for the particulate contaminants which represents contaminants entering along with free air through an air-side economizer. The data obtained from this analysis can be helpful in predicting which type of particles will be deposited at what location based on its distance from the source and weight of the particles. This can further help in reinforcing the regions with a potential to fail under particulate contamination.

scholarly journals Improvement in airflow and temperature distribution with an in-rack UFAD system at a high-density data center

2020 ◽  
Vol 168 ◽  
pp. 106495
Author(s):  
Xiaolei Yuan ◽  
Xinjie Xu ◽  
Jinxiang Liu ◽  
Yiqun Pan ◽  
Risto Kosonen ◽  
...  
Keyword(s):  
Temperature Distribution ◽  
Data Center ◽  
High Density ◽  
Density Data

scholarly journals A Comparative CFD Study of Two Air Distribution Systems with Hot Aisle Containment in High-Density Data Centers

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6147
Author(s):  
Jinkyun Cho ◽  
Jesang Woo ◽  
Beungyong Park ◽  
Taesub Lim
Keyword(s):  
Thermal Performance ◽  
Data Center ◽  
Distribution Systems ◽  
Data Centers ◽  
High Density ◽  
Operating Conditions ◽  
Air Distribution ◽  
Density Data ◽  
Computational Fluid Dynamics Analysis ◽  
Hard Floor

Removing heat from high-density information technology (IT) equipment is essential for data centers. Maintaining the proper operating environment for IT equipment can be expensive. Rising energy cost and energy consumption has prompted data centers to consider hot aisle and cold aisle containment strategies, which can improve the energy efficiency and maintain the recommended level of inlet air temperature to IT equipment. It can also resolve hot spots in traditional uncontained data centers to some degree. This study analyzes the IT environment of the hot aisle containment (HAC) system, which has been considered an essential solution for high-density data centers. The thermal performance was analyzed for an IT server room with HAC in a reference data center. Computational fluid dynamics analysis was conducted to compare the operating performances of the cooling air distribution systems applied to the raised and hard floors and to examine the difference in the IT environment between the server rooms. Regarding operating conditions, the thermal performances in a state wherein the cooling system operated normally and another wherein one unit had failed were compared. The thermal performance of each alternative was evaluated by comparing the temperature distribution, airflow distribution, inlet air temperatures of the server racks, and recirculation ratio from the outlet to the inlet. In conclusion, the HAC system with a raised floor has higher cooling efficiency than that with a hard floor. The HAC with a raised floor over a hard floor can improve the air distribution efficiency by 28%. This corresponds to 40% reduction in the recirculation ratio for more than 20% of the normal cooling conditions. The main contribution of this paper is that it realistically implements the effectiveness of the existing theoretical comparison of the HAC system by developing an accurate numerical model of a data center with a high-density fifth-generation (5G) environment and applying the operating conditions.

Thermo-Fluids Provisioning of a High Performance High Density Data Center

2006 ◽  
Vol 21 (2-3) ◽  
pp. 227-238 ◽  
Author(s):  
Abdlmonem H. Beitelmal ◽  
Chandrakant D. Patel
Keyword(s):  
Data Center ◽  
High Performance ◽  
High Density ◽  
Density Data

scholarly journals Research on cloud computing high-density data center infrastructure and environment matching technology

2021 ◽  
Vol 336 ◽  
pp. 02028
Author(s):  
Lianteng Shen ◽  
Shengpan Qian ◽  
Tianyi Zhai ◽  
Ling Li ◽  
Zhe Li
Keyword(s):  
Cloud Computing ◽  
Data Center ◽  
Data Centers ◽  
Rapid Development ◽  
High Density ◽  
Density Data ◽  
Virtualization Technology ◽  
Software And Hardware ◽  
New Infrastructure

The current rapid development of cloud computing and networks has put forward new requirements for the construction of new infrastructure such as data centers. This paper compares traditional data centers and high-density data centers, proposes a three-tier infrastructure for high-density data centers, and analyzes the data center environment. To solve the obvious problem of software and hardware heterogeneity in high-density data centers, this paper uses virtualization technology to pool resources in high-density data centers and introduces SOA architecture to manage software and hardware resources hierarchically. Finally, the data center infrastructure and environment matching technology are studied.

A SiC-based isolated DC/DC converter for high density data center applications

2018 ◽  
Author(s):  
Ali Shahabi ◽  
Andrew Lemmon ◽  
Ryan Graves ◽  
Sujit Banerjee ◽  
Levi Gant ◽  
...  
Keyword(s):  
Data Center ◽  
High Density ◽  
Density Data
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