scholarly journals Chapter 20: Data Center IT Efficiency Measures Evaluation Protocol. The Uniform Methods Project: Methods for Determining Energy Efficiency Savings for Specific Measures

2017 ◽  
Author(s):  
Charles W Kurnik ◽  
Robert Huang ◽  
Eric Masanet
Keyword(s):  
Energy Efficiency ◽  
Data Center ◽  
Evaluation Protocol ◽  
Efficiency Measures ◽  
It Efficiency

Thermal Profiling of a Small Operational Data Center

2019 ◽  
Author(s):  
İsmail Türkmen ◽  
Cem Ahmet Mercan ◽  
Hamza Salih Erden
Keyword(s):  
Energy Efficiency ◽  
Boundary Conditions ◽  
Data Center ◽  
High Performance ◽  
Performance Indicator ◽  
Thermal Environment ◽  
Airflow Rate ◽  
Cfd Model ◽  
Energy Efficiency Measures ◽  
Efficiency Measures

Abstract This study highlights experimental challenges of setting up a computational fluid dynamics (CFD) model of a 180-m2 small-size high-performance computing (HPC) data center (DC) in a university campus and the validation procedure leading to a reasonably accurate CFD model for the investigation of the thermal environment. Experimental results based on temperature, airflow, pressure, and power measurements help to confirm and identify inefficient design and operational practices as well as problematic areas regarding the thermal management, define the boundary conditions and validate CFD models. Leaky floors, uneven placement of computing equipment and perforated tiles preventing separation of hot and cold air, low-temperature operation, excessive cooling capacity and fan power were identified sources of energy inefficiency in the DC. CFD model predictions were gradually improved by using experimental measurements in various boundary conditions and detailed geometrical representation of large leakage openings. The performance indicator of the CFD model during the validation process was the temperature prediction error at the rack inlets and exits. After all improvements, the CFD model can make estimations with an error less than 1°C (RMSE < 1.0) at the rack inlet and less than 5°C (RMSE < 5.0) at the rack outlet. The validated CFD model tests the feasibility of various energy efficiency measures. These measures are in the form of operational or design changes in line with the best practices. Impact of leakage between the raised floor and the room, reduced airflow rate, cold-aisle and hot-aisle separation, workload consolidation, and higher temperature operation were among the phenomena tested by using the validated CFD model. The estimated power usage effectiveness (PUE) value reduced from 1.95 to 1.40 with the implemented energy efficiency measures.

THE ENERGY EFFICIENCY ANALYSIS OF DATA CENTER COOLING BASED ON SEPARATED HEAT PIPE

2018 ◽  
Author(s):  
Tao Wang ◽  
Yuhua Li ◽  
Huan Liu ◽  
Lei Zhang ◽  
Yuyan Jiang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Heat Pipe ◽  
Data Center ◽  
Efficiency Analysis ◽  
Data Center Cooling ◽  
Energy Efficiency Analysis

Problem of energy efficiency in the model of sustainable development in Ukraine: EU experience

2019 ◽  
pp. 18-23
Author(s):  
Vasyl Zelenko ◽  
Yaryna Ferenchak ◽  
Nataliya Zelenko
Keyword(s):  
Energy Efficiency ◽  
Sustainable Development ◽  
Energy Saving ◽  
Association Agreement ◽  
Climate Conditions ◽  
The Sustainable Development ◽  
Non Profit ◽  
Efficiency Measures ◽  
Efficient Construction

The paper outlines major preconditions of development of energy efficiency programs and the process of their introduction from the perspective of sustainable development concept. Energy saving measures of European Union are examined, its experience and results, like green books and Thermie programs, etc are analyzed. The paper also specifies relevant activities and responsibilities undertaken by Member States by 2030 and the rates planned to be achieved. The experience of neighboring Poland in energy efficiency promotion is analyzed, as far as the country most closely resembles Ukraine by the initial rates in 1990. We calculated conditional losses of Ukraine in 2017 as the gap between the rates of energy efficiency of Ukraine and Poland (similarity of climate conditions and the state of housing funds allowed us to assume that the comparison will be the most correct regarding Ukraine). The results of calculations make us conclude that the funds are used most efficiently if the money designated, for example, for subsidizing of population are directed at strengthening of energy efficiency (at least up to the level of neighboring country). It will result in saving of about 40 billion. This is the amount defined as Ukrainian capacity in terms of improvement of energy saving and possible results of its realization. The paper determines the stage Ukraine is at in introduction of energy efficiency measures and programs: “warm loans” program; conditions regarding energy saving in Ukraine enshrined in the EU-Ukraine Association Agreement; creation of legal basis, namely the Law of Ukraine “On Energy Efficiency Fund” as of 8 June 2017. The role of newly created Energy Efficiency Fund is analyzed. Special attention is paid to the fact that energy efficient construction is one of international liabilities undertaken by Ukraine. The presence of The Active House Alliance at Ukrainian market is an important achievement in this sphere as it is the non-profit association aiming at creation of housing concept corresponding to the sustainable development principles.

scholarly journals Impact of Passive Energy Efficiency Measures on Cooling Energy Demand in an Architectural Campus Building in Karachi, Pakistan

2021 ◽  
Vol 13 (13) ◽  
pp. 7251
Author(s):  
Mushk Bughio ◽  
Muhammad Shoaib Khan ◽  
Waqas Ahmed Mahar ◽  
Thorsten Schuetze
Keyword(s):  
Energy Efficiency ◽  
Energy Demand ◽  
Electricity Consumption ◽  
Information Modeling ◽  
Base Case ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
The Impact ◽  
Cooling Energy Demand ◽  
Campus Building

Electric appliances for cooling and lighting are responsible for most of the increase in electricity consumption in Karachi, Pakistan. This study aims to investigate the impact of passive energy efficiency measures (PEEMs) on the potential reduction of indoor temperature and cooling energy demand of an architectural campus building (ACB) in Karachi, Pakistan. PEEMs focus on the building envelope’s design and construction, which is a key factor of influence on a building’s cooling energy demand. The existing architectural campus building was modeled using the building information modeling (BIM) software Autodesk Revit. Data related to the electricity consumption for cooling, building masses, occupancy conditions, utility bills, energy use intensity, as well as space types, were collected and analyzed to develop a virtual ACB model. The utility bill data were used to calibrate the DesignBuilder and EnergyPlus base case models of the existing ACB. The cooling energy demand was compared with different alternative building envelope compositions applied as PEEMs in the renovation of the existing exemplary ACB. Finally, cooling energy demand reduction potentials and the related potential electricity demand savings were determined. The quantification of the cooling energy demand facilitates the definition of the building’s electricity consumption benchmarks for cooling with specific technologies.

Increasing the energy efficiency of a data center based on machine learning

2021 ◽  
Author(s):  
Zhen Yang ◽  
Jinhong Du ◽  
Yiting Lin ◽  
Zhen Du ◽  
Li Xia ◽  
...  
Keyword(s):  
Machine Learning ◽  
Energy Efficiency ◽  
Data Center

scholarly journals Energy Efficiency Solutions for Small and Medium-Sized Enterprises

Proceedings ◽  
2021 ◽  
Vol 65 (1) ◽  
pp. 19
Author(s):  
Joanna Southernwood ◽  
Grigoris K. Papagiannis ◽  
Erudino Llano Güemes ◽  
Luisa Sileni
Keyword(s):  
Energy Efficiency ◽  
Energy Saving ◽  
Energy Management ◽  
Policy Recommendations ◽  
Effective Energy ◽  
Energy Audit ◽  
Horizon 2020 ◽  
Efficiency Measures ◽  
Energy Audits ◽  
Innovative Capacity

Few small and medium-sized enterprises (SMEs) have undertaken an energy audit to date and even fewer have taken action to implement energy-saving measures. Lack of time, knowledge, and finance, coupled with the low priority that SMEs give to energy management, are the most commonly cited barriers to effective energy management in SMEs. Four projects funded by Horizon 2020 (SPEEDIER, SMEmPower Efficiency, E2DRIVER, and Innoveas) have developed innovative capacity-building programmes designed to eliminate these barriers and encourage SMEs to undertake energy audits and implement the recommended energy efficiency measures. This paper presents an overview of the innovations being tested and suggests a series of policy recommendations that could help to drive uptake of energy audits in SMEs.

scholarly journals Future Greener Seaports: A Review of New Infrastructure, Challenges, and Energy Efficiency Measures

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Muhammad Sadiq ◽  
Syed Wajahat Ali ◽  
Yacine Terriche ◽  
Muhammad Umair Mutarraf ◽  
Mustafa Alrayah Hassan ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Energy Efficiency Measures ◽  
Efficiency Measures ◽  
New Infrastructure

scholarly journals A review of Energy Efficiency Measures Within Electric Motors Systems

2019 ◽  
Vol 158 ◽  
pp. 3346-3351 ◽  
Author(s):  
Andrea Trianni ◽  
Enrico Cagno ◽  
Davide Accordini
Keyword(s):  
Energy Efficiency ◽  
Electric Motors ◽  
Energy Efficiency Measures ◽  
Efficiency Measures
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