دورية أكاديمية

Cooling Effectiveness of a Data Center Room under Overhead Airflow via Entropy Generation Assessment in Transient Scenarios.

التفاصيل البيبلوغرافية
العنوان: Cooling Effectiveness of a Data Center Room under Overhead Airflow via Entropy Generation Assessment in Transient Scenarios.
المؤلفون: Silva-Llanca L; Instituto de Investigación Multidisciplinario en Ciencia y Tecnología, Departamento de Ingeniería Mecánica, Universidad de La Serena, Benavente 980, La Serena 1720170, Chile., Del Valle M; Laboratory for Advanced Thermal and Fluid Systems, Mechanical Engineering Department, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085, USA., Ortega A; Laboratory for Advanced Thermal and Fluid Systems, Mechanical Engineering Department, Villanova University, 800 East Lancaster Avenue, Villanova, PA 19085, USA., Díaz AJ; Facultad de Ingeniería y Ciencias, Escuela de Ingeniería Industrial, Universidad Diego Portales, Av. Ejército 441, Santiago 8370191, Chile.
المصدر: Entropy (Basel, Switzerland) [Entropy (Basel)] 2019 Jan 21; Vol. 21 (1). Date of Electronic Publication: 2019 Jan 21.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: MDPI Country of Publication: Switzerland NLM ID: 101243874 Publication Model: Electronic Cited Medium: Internet ISSN: 1099-4300 (Electronic) Linking ISSN: 10994300 NLM ISO Abbreviation: Entropy (Basel) Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Basel, Switzerland : MDPI, 1999-
مستخلص: Forecasting data center cooling demand remains a primary thermal management challenge in an increasingly larger global energy-consuming industry. This paper proposes a dynamic modeling approach to evaluate two different strategies for delivering cold air into a data center room. The common cooling method provides air through perforated floor tiles by means of a centralized distribution system, hindering flow management at the aisle level. We propose an idealized system such that five overhead heat exchangers are located above the aisle and handle the entire server cooling demand. In one case, the overhead heat exchangers force the airflow downwards into the aisle (Overhead Downward Flow (ODF)); in the other case, the flow is forced to move upwards (Overhead Upward Flow (OUF)). A complete fluid dynamic, heat transfer, and thermodynamic analysis is proposed to model the system's thermal performance under both steady state and transient conditions. Inside the servers and heat exchangers, the flow and heat transfer processes are modeled using a set of differential equations solved in MATLAB™ 2017a. This solution is coupled with ANSYS-Fluent™ 18, which computes the three-dimensional velocity, temperature, and turbulence on the Airside. The two approaches proposed (ODF and OUF) are evaluated and compared by estimating their cooling effectiveness and the local Entropy Generation. The latter allows identifying the zones within the room responsible for increasing the inefficiencies (irreversibilities) of the system. Both approaches demonstrated similar performance, with a small advantage shown by OUF. The results of this investigation demonstrated a promising approach of data center on-demand cooling scenarios.
معلومات مُعتمدة: IIP-1134810 National Science Foundation; 11160172 Comisión Nacional de Investigación Científica y Tecnológica
فهرسة مساهمة: Keywords: data center heating, ventilation, and air conditioning (HVAC); dynamic modeling; entropy generation; overhead cooling
تواريخ الأحداث: Date Created: 20201203 Latest Revision: 20201207
رمز التحديث: 20240829
مُعرف محوري في PubMed: PMC7514209
DOI: 10.3390/e21010098
PMID: 33266814
قاعدة البيانات: MEDLINE
الوصف
تدمد:1099-4300
DOI:10.3390/e21010098