Download or read book Cooling and Heat Recovery of Data Centers written by Ahmad Alamir Sbaity and published by . This book was released on 2022 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this study is to investigate passive and hybrid cooling, by performing heat recovery within a typical data center. The chosen cooling method is the thermosyphon loop, as it allows the transfer of high powers over a long distance. The chosen evaporator is a microchannel heat exchanger, the condenser is formed by finned tubes. An experimental parametric study is made by varying the fill ratio, the thermal power of the servers and the outside temperature of the air ensuring the cooling by natural convection. A second experimental study is done by cooling the condenser with water in forced convection. An annual numerical study on data centers in several cities in France is done to quantify the energy savings achieved with passive and hybrid cooling. The pPUE (partial power use efficiency) coefficient is calculated to evaluate the efficiency of the proposed cooling system. Finally, the thermosyphon loop is combined with a heat pump in order to recover heat from the data centers and distribute it. The energy savings of the proposed system are compared to the use of a boiler to heat a house. An economic study is made to calculate the payback period in several climates. The ERE (energy reuse efficiency) coefficient is also calculated to evaluate the capacity of the heat recovery system.
Download or read book Energy Efficient Thermal Management of Data Centers written by Yogendra Joshi and published by Springer Science & Business Media. This book was released on 2012-03-20 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy Efficient Thermal Management of Data Centers examines energy flow in today's data centers. Particular focus is given to the state-of-the-art thermal management and thermal design approaches now being implemented across the multiple length scales involved. The impact of future trends in information technology hardware, and emerging software paradigms such as cloud computing and virtualization, on thermal management are also addressed. The book explores computational and experimental characterization approaches for determining temperature and air flow patterns within data centers. Thermodynamic analyses using the second law to improve energy efficiency are introduced and used in proposing improvements in cooling methodologies. Reduced-order modeling and robust multi-objective design of next generation data centers are discussed.
Download or read book Data Center Handbook written by Hwaiyu Geng and published by John Wiley & Sons. This book was released on 2014-12-22 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the fundamentals, technologies, and best practices in designing, constructing and managing mission critical, energy efficient data centers Organizations in need of high-speed connectivity and nonstop systems operations depend upon data centers for a range of deployment solutions. A data center is a facility used to house computer systems and associated components, such as telecommunications and storage systems. It generally includes multiple power sources, redundant data communications connections, environmental controls (e.g., air conditioning, fire suppression) and security devices. With contributions from an international list of experts, The Data Center Handbook instructs readers to: Prepare strategic plan that includes location plan, site selection, roadmap and capacity planning Design and build "green" data centers, with mission critical and energy-efficient infrastructure Apply best practices to reduce energy consumption and carbon emissions Apply IT technologies such as cloud and virtualization Manage data centers in order to sustain operations with minimum costs Prepare and practice disaster reovery and business continuity plan The book imparts essential knowledge needed to implement data center design and construction, apply IT technologies, and continually improve data center operations.
Download or read book Optimum Cooling of Data Centers written by Jun Dai and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the use of free air cooling to improve the efficiency of, and cooling of, equipment for use in telecom infrastructures. Discussed at length is the cooling of communication installation rooms such as data centers or base stations, and this is intended as a valuable tool for the people designing and manufacturing key parts of communication networks. This book provides an introduction to current cooling methods used for energy reduction, and also compares present cooling methods in use in the field. The qualification methods and standard reliability assessments are reviewed, and their inability to assess the risks of free air cooling is discussed. The method of identifying the risks associated with free air cooling on equipment performance and reliability is introduced. A novel method of assessment for free air cooling is also proposed that utilizes prognostics and health management (PHM). This book also: Describes how the implementation of free air cooling can save energy for cooling within the telecommunications infrastructure. Analyzes the potential risks and failures of mechanisms possible in the implementation of free air cooling, which benefits manufacturers and equipment designers. Presents prognostics-based assessments to identify and mitigate the risks of telecommunications equipment under free air cooling conditions, which can provide the early warning of equipment failures at operation stage without disturbing the data centers' service. Optimum Cooling for Data Centers is an ideal book for researchers and engineers interested in designing and manufacturing equipment for use in telecom infrastructures.
Download or read book Waste Heat Recovery in Data Centers written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to examine possible waste heat recovery methods in data centers. Predictions indicate that in the next decade data center racks may dissipate 70kW of heat, up from the current levels of 10-15kW. Due to this increase, solutions must be found to increase the efficiency of data center cooling. This thesis will examine possible waste heat recovery technologies which will improve energy efficiency. Possible approaches include phase change materials, thermoelectrics, thermomagnetics, vapor compression cycles, absorbtion and adsorbtion systems. After a thorough evaluation of the possible waste heat engines, the use of an ejector heat pump was evaluated in detail. The principle behind an ejector heat pump is very similar to a vapor compression cycle. However, the compressor is replaced with a pump, boiler and an ejector. These three components require less moving parts and are more cost effective then a comparable compressor, despite a lower efficiency. This system will be examined under general operating conditions in a data center. The heat load is around 15-20kW and air temperatures near 85°C. A parametric study is conducted to determine the viability and cost effectiveness of this system in the data center. Included will be various environmentally friendly working fluids that satisfy the low temperature ranges found in a data center. It is determined that Ammonia presents the best option as a working fluid for this application. Using this system a Coefficient Of Performance of 1.538 at 50°C can be realized. This will result in an estimated 373,000 kW-hr saved over a year and a $36,425 reduction in annual cost. Finally, recommendations for implementation are considered to allow for future design and testing of this viable waste heat recovery device.
Download or read book Energy and Sustainable Futures written by Iosif Mporas and published by Springer Nature. This book was released on 2021-04-29 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book presents papers displayed in the 2nd International Conference on Energy and Sustainable Futures (ICESF 2020), co-organised by the University of Hertfordshire and the University Alliance DTA in Energy. The research included in this book covers a wide range of topics in the areas of energy and sustainability including: • ICT and control of energy;• conventional energy sources;• energy governance;• materials in energy research;• renewable energy; and• energy storage. The book offers a holistic view of topics related to energy and sustainability, making it of interest to experts in the field, from industry and academia.
Download or read book Heat transfer in data centers volume II written by Chengbin Zhang and published by Frontiers Media SA. This book was released on 2023-03-24 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Grow a Greener Data Center written by Douglas Alger and published by Pearson Education. This book was released on 2010 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alger presents technologies, design strategies, and operational approaches that can help any company improve the energy efficiency and "eco-friendliness" of their IT facilities. He walks step-by-step through "greening" physical construction, power, cooling, and servers; then covers equipment consolidation, virtualization, and much more.
Download or read book PUE written by and published by Ashrae. This book was released on 2014-01-09 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Simplifies the absorption and use of the PUE metric and allows executives to gain understanding of the concepts surrounding PUE, while providing application knowledge and resources to those implementing and reporting data center metrics"--
Download or read book Advanced Concepts for Renewable Energy Supply of Data Centres written by Jaume Salom and published by CRC Press. This book was released on 2022-09-01 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid increase of cloud computing, high performance computing (HPC) and the vast growth in Internet and Social Media use have aroused the interest in energy consumption and the carbon footprint of Data Centres. Data Centres primarily contain electronic equipment used for data processing (servers), data storage (storage equipment), and communications (network equipment). Collectively, this equipment processes, stores, and transmits digital information and is known as information technology (IT) equipment. Advanced Concepts for Renewable Energy Supply of Data Centres introduces a number of technical solutions for the supply of power and cooling energy into Data Centres with enhanced utilisation of renewable energy sources in order to achieve low energy Data Centres. Because of the high energy density nature of these unique infrastructures, it is essential to implement energy efficiency measures and reduce consumption before introducing any renewable energy source. A holistic approach is used with the objective of integrating many technical solutions such as management of the IT (Information Technology) load, efficient electrical supply to the IT systems, Low-Ex air-conditioning systems, interaction with district heating and cooling networks, re-use of heat, free cooling (air, seawater, groundwater), optimal use of heat and cold storage, electrical storage and integration in smart grids. This book is therefore a catalogue of advanced technical concepts that could be integrated into Data Centres portfolio in order to increase the overall efficiency and the share of renewable energies in power and cooling supply. Based on dynamic energy models implemented in TRNSYS some concepts are deeply evaluated through yearly simulations. The results of the simulation are illustrated with Sankey charts, where the energy flows per year within the subsystems of each concept for a selected scenario are shown, and graphs showing the results of parametric analysis. A set of environmental metrics (as the non-renewable primary energy) and financial metrics (CAPEX and OPEX) as well of energy efficiency metrics like the well-known PUE, are described and used to evaluate the different technical concepts.
Download or read book Administering Data Centers written by Kailash Jayaswal and published by John Wiley & Sons. This book was released on 2005-10-28 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book covers a wide spectrum of topics relevant to implementing and managing a modern data center. The chapters are comprehensive and the flow of concepts is easy to understand." -Cisco reviewer Gain a practical knowledge of data center concepts To create a well-designed data center (including storage and network architecture, VoIP implementation, and server consolidation) you must understand a variety of key concepts and technologies. This book explains those factors in a way that smoothes the path to implementation and management. Whether you need an introduction to the technologies, a refresher course for IT managers and data center personnel, or an additional resource for advanced study, you'll find these guidelines and solutions provide a solid foundation for building reliable designs and secure data center policies. * Understand the common causes and high costs of service outages * Learn how to measure high availability and achieve maximum levels * Design a data center using optimum physical, environmental, and technological elements * Explore a modular design for cabling, Points of Distribution, and WAN connections from ISPs * See what must be considered when consolidating data center resources * Expand your knowledge of best practices and security * Create a data center environment that is user- and manager-friendly * Learn how high availability, clustering, and disaster recovery solutions can be deployed to protect critical information * Find out how to use a single network infrastructure for IP data, voice, and storage
Download or read book Data Centers HVAC DESIGN written by Charles Nehme and published by Charles Nehme. This book was released on 2022-02-22 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses HVAC design criteria for Data centres. I have written it with the knowledge of my 15 years of involvement in Data centers on every continent. I have worked on the construction and implementation of Data centers, on the facilities maintenance and operations and many years as Quality Assurance Manager. I have kept it simple yet concise. #datacenters #book #engineering #hvac #cooling #it
Download or read book Modeling Experimentation and Analysis of Data Center Waste Heat Recovery and Utilization written by Anna Haywood and published by . This book was released on 2014 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: Increasing computational demands in data centers require facilities to operate at higher ambient temperatures and at higher power densities. Conventionally, data centers are cooled with electrically-driven vapor-compressor equipment. This paper proposes an alternative data center cooling architecture that is heat-driven. The source is heat produced by the computer equipment. This dissertation details experiments investigating the quantity and quality of heat that can be captured from a liquid-cooled microprocessor on a computer server blade from a data center. The experiments involve four liquid-cooling setups and associated heat-extraction, including a radical approach using mineral oil. The trials examine the feasibility of using the thermal energy from a CPU to drive a cooling process. Uniquely, the investigation establishes an interesting and useful relationship simultaneously among CPU temperatures, power, and utilization levels. In response to the system data, this project explores the heat, temperature and power effects of adding insulation, varying water flow, CPU loading, and varying the cold plate-to-CPU clamping pressure. The idea is to provide an optimal and steady range of temperatures necessary for a chiller to operate. Results indicate an increasing relationship among CPU temperature, power and utilization. Since the dissipated heat can be captured and removed from the system for reuse elsewhere, the need for electricity-consuming computer fans is eliminated. Thermocouple readings of CPU temperatures as high as 93°C and a calculated CPU thermal energy up to 67Wth show a sufficiently high temperature and thermal energy to serve as the input temperature and heat medium input to an absorption chiller. This dissertation performs a detailed analysis of the exergy of a processor and determines the maximum amount of energy utilizable for work. Exergy as a source of realizable work is separated into its two contributing constituents: thermal exergy and informational exergy. The informational exergy is that usable form of work contained within the most fundamental unit of information output by a switching device within a CPU. Exergetic thermal, informational and efficiency values are calculated and plotted for our particular CPU, showing how the datasheet standards compare with experimental values. The dissertation concludes with a discussion of the work's significance.
Download or read book An Introduction to Energy Efficient Data Centers for Professional Engineers written by J. Paul Guyer, P.E., R.A. and published by Guyer Partners. This book was released on 2023-04-24 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introductory technical guidance for mechanical engineers, electrical engineers and other professional engineers and construction managers interested in design and construction of energy efficient data centers. Here is what is discussed: 1. SUMMARY, 2. BACKGROUND, 3. INFORMATION TECHNOLOGY (IT) SYSTEMS, 4. ENVIRONMENTAL CONDITIONS, 5. AIR MANAGEMENT, 6. COOLING SYSTEMS, 7. ELECTRICAL SYSTEMS, 8. OTHER OPPORTUNITIES FOR ENERGY-EFFICIENT DESIGN, 9. DATA CENTER METRICS AND BENCHMARKING.
Download or read book Liquid Cooling Guidelines for Datacom Equipment Centers written by and published by Ashrae. This book was released on 2014-02-01 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Provides information on liquid cooling for datacom equipment centers. Concerned with energy efficiency"--
Download or read book High Density Data Centers written by and published by American Society of Heating Refrigerating and Air-Conditioning Engineers. This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Data centers and telecommunications rooms that house datacom equipment are becoming increasingly more difficult to adequately cool. This is a result of IT manufacturers increasing datacom performance year after year at the cost of increased heat dissipation. Even though performance has, in general, increased at a more rapid rate than power, the power required and the resulting heat dissipated by the datacom equipment has increased to a level that is putting a strain on data centers.In the struggle to improve the thermal management characteristics of data centers, it is sometimes important to assess today's data center designs. The objective of this book is to provide a series of case studies of high density data centers and a range of ventilation schemes that demonstrate how loads can be cooled using a number of different approaches.
Download or read book Liquid Cooling For Data Centers written by Charles Nehme and published by Independently Published. This book was released on 2023-01-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid cooling for data centers is a technological solution that helps keep computer hardware and other electronic devices running at optimal temperatures. It helps reduce costs associated with energy consumption by cooling the data center's internal environment without the need for traditional air conditioning systems. Liquid cooling systems are built with a variety of components, including heat exchangers, pumps, hoses, and cooling towers. These components work together to exchange the heat generated from the components in the data center with a coolant, such as water or a refrigerant. The coolant is then cycled through the system and released into the environment, cooling the system and providing a more consistent temperature for the data center. Liquid cooling solutions provide an efficient and cost-effective means for data centers to maintain their optimal temperature and reduce the amount of energy required to run the system.
