Dynamical Modeling And Control Of Multiphase Heat Transport Systems Based On Loop Heat Pipes

Author : Gellrich, Thomas Christoph
Publisher : KIT Scientific Publishing
Page : 268 pages
File Size : 43,6 Mb
Release : 2022-12-05
Category : Technology & Engineering
ISBN : 9783731512318

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Dynamical Modeling and Control of Multiphase Heat Transport Systems Based on Loop Heat Pipes by Gellrich, Thomas Christoph Pdf

Effective heat transport systems in aerospace are based on multiphase loop heat pipes (LHPs). For a precise thermal control of the electronics, electrical heaters are additionally used to control the operating temperature of the LHP. This work focusses on the dynamical modeling and model-based control design for LHP-based heat transport systems. The results of this work can be used for the optimization of current control parameters and the efficient control design for future LHP applications.

Author : Maurer, Jona
Publisher : KIT Scientific Publishing
Page : 224 pages
File Size : 45,5 Mb
Release : 2023-06-27
Category : Electronic
ISBN : 9783731512769

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Transactive Control of Coupled Electric Power and District Heating Networks by Maurer, Jona Pdf

Der Entwurf von Ansätzen zur marktbasierten Betriebsführung zukünftiger Energienetze steht vor der technischen Herausforderung, eine enorme Anzahl von Netzteilnehmern zeitlich und örtlich zu koordinieren, um Erzeugung und Verbrauch auszugleichen und einen sicheren Netzbetrieb zu ermöglichen. Um dieser Herausforderung zu begegnen entstand das Forschungsfeld der Transactive Control Ansätze. In dieser Arbeit wird ein neuer Transactive Control Ansatz für gekoppelte Strom- und Wärmenetze vorgestellt. - The design of approaches for future market-based energy network operation faces the technical challenge of needing to coordinate a vast number of network participants spatially and temporally, in order to balance energy supply and demand, while achieving secure network operation. To meet this challenge, the research field of transactive control emerged. Within this work a new transactive control approach for coupled electric power and district heating networks is presented.

Author : Varga, Bálint
Publisher : KIT Scientific Publishing
Page : 250 pages
File Size : 41,8 Mb
Release : 2024-01-08
Category : Electronic
ISBN : 9783731513254

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Limited Information Shared Control and its Applications to Large Vehicle Manipulators by Varga, Bálint Pdf

This work focuses on the Limited Information Shared Control and its controller design using potential games. Through the developed systematic controller design, the experiments demonstrate the effectiveness and superiority of this concept compared to traditional manual and non-cooperative control approaches in the application of large vehicle manipulators.

Author : Puccetti, Luca
Publisher : KIT Scientific Publishing
Page : 156 pages
File Size : 44,5 Mb
Release : 2023-06-16
Category : Electronic
ISBN : 9783731512905

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Self-Learning Longitudinal Control for On-Road Vehicles by Puccetti, Luca Pdf

Reinforcement Learning is a promising tool to automate controller tuning. However, significant extensions are required for real-world applications to enable fast and robust learning. This work proposes several additions to the state of the art and proves their capability in a series of real world experiments.

Author : Wael I.A. Aly
Publisher : BoD – Books on Demand
Page : 78 pages
File Size : 45,9 Mb
Release : 2019-09-18
Category : Technology & Engineering
ISBN : 9781839626432

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Recent Advances in Heat Pipes by Wael I.A. Aly Pdf

Heat pipes are considered as an effective thermal solution, particularly in high heat flux applications and in situations where there is a combination of nonuniform heat loading, limited airflow over the heat-generating components, and space or weight constraints. This book is intended to explore some of the recent advances in heat pipes and their applications in thermal systems. The first chapter is an introductory chapter about the recent advances in heat pipes in general. The second chapter is about thermosyphon heat pipe technology; working principles, advantages, and disadvantages; application ranges; and using computational fluid dynamics in modeling thermosyphons. The third chapter is about recent research into loop heat pipes (LHPs). The last chapter presents a novel liquid-vapor separator-incorporated gravitational LHP.

Author : W. J. Minkowycz,E. M. Sparrow,J.P Abraham,J. M. Gorman
Publisher : CRC Press
Page : 273 pages
File Size : 45,8 Mb
Release : 2017-04-07
Category : Science
ISBN : 9781315355306

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Numerical Simulation of Heat Exchangers by W. J. Minkowycz,E. M. Sparrow,J.P Abraham,J. M. Gorman Pdf

This book deals with certain aspects of material science, particularly with the release of thermal energy associated with bond breaking. It clearly establishes the connection between heat transfer rates and product quality. The editors then sharply draw the thermal distinctions between the various categories of welding processes, and demonstrate how these distinctions are translated into simulation model uniqueness. The book discusses the incorporation of radiative heat transfer processes into the simulation model.

Author : Amir Faghri
Publisher : Global Digital Press
Page : 32 pages
File Size : 48,6 Mb
Release : 1995-03
Category : Science
ISBN : 9781560323839

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Heat Pipe Science And Technology by Amir Faghri Pdf

Presents basic and advanced techniques in the analytical and numerical modeling of various heat pipe systems under a variety of operating conditions and limitations. It describes the variety of complex and coupled processes of heat and mass transfer in heat pipes. The book consists of fourteen chapters, two appendices, and over 400 illustrations, along with numerous references and a wide variety of technical data on heat pipes.

Author : Thome John R
Publisher : World Scientific
Page : 1460 pages
File Size : 41,9 Mb
Release : 2018-03-13
Category : Technology & Engineering
ISBN : 9789813227422

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Encyclopedia Of Two-phase Heat Transfer And Flow Iii: Macro And Micro Flow Boiling And Numerical Modeling Fundamentals (A 4-volume Set) by Thome John R Pdf

Set III of this encyclopedia is a new addition to the previous Sets I and II. It contains 26 invited chapters from international specialists on the topics of numerical modeling of two-phase flows and evaporation, fundamentals of evaporation and condensation in microchannels and macrochannels, development and testing of micro two-phase cooling systems for electronics, and various special topics (surface wetting effects, microfin tubes, two-phase flow vibration across tube bundles). The chapters are written both by renowned university researchers and by well-known engineers from leading corporate research laboratories. Numerous 'must read' chapters cover the fundamentals of research and engineering practice on boiling, condensation and two-phase flows, two-phase heat transfer equipment, electronics cooling systems, case studies and so forth. Set III constitutes a 'must have' reference together with Sets I and II for thermal engineering researchers and practitioners.

Author : Anonim
Publisher : Unknown
Page : 400 pages
File Size : 45,7 Mb
Release : 1948
Category : Mechanics, Applied
ISBN : OSU:32435026160655

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Applied mechanics reviews by Anonim Pdf

Author : Bahman Zohuri
Publisher : Springer
Page : 513 pages
File Size : 55,8 Mb
Release : 2016-04-28
Category : Technology & Engineering
ISBN : 9783319298412

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Heat Pipe Design and Technology by Bahman Zohuri Pdf

This book provides a practical study of modern heat pipe engineering, discussing how it can be optimized for use on a wider scale. An introduction to operational and design principles, this book offers a review of heat and mass transfer theory relevant to performance, leading into and exploration of the use of heat pipes, particularly in high-heat flux applications and in situations in which there is any combination of non-uniform heat loading, limited airflow over the heat generating components, and space or weight constraints. Key implementation challenges are tackled, including load-balancing, materials characteristics, operating temperature ranges, thermal resistance, and operating orientation. With its presentation of mathematical models to calculate heat transfer limitations and temperature gradient of both high- and low-temperature heat pipes, the book compares calculated results with the available experimental data. It also includes a series of computer programs developed by the author to support presented data, aid design, and predict performance.

Author : L.L Vasiliev,Sadik Kakaç
Publisher : CRC Press
Page : 539 pages
File Size : 47,7 Mb
Release : 2013-05-08
Category : Science
ISBN : 9781466564145

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Heat Pipes and Solid Sorption Transformations by L.L Vasiliev,Sadik Kakaç Pdf

Developing clean energy and utilizing waste energy has become increasingly vital. Research targeting the advancement of thermally powered adsorption cooling technologies has progressed in the past few decades, and the awareness of fuel cells and thermally activated (heat pipe heat exchangers) adsorption systems using natural refrigerants and/or alternatives to hydrofluorocarbon-based refrigerants is becoming ever more important. Heat Pipes and Solid Sorption Transformations: Fundamentals and Practical Applications concentrates on state-of-the-art adsorption research and technologies for relevant applications based on the use of efficient heat transfer devices—heat pipe and two-phase thermosyphons—with the objectives of energy efficiency and sustainability. This book also discusses heat pipe thermal control as it relates to spacecraft applications. The first few chapters of Heat Pipes and Solid Sorption Transformations: Fundamentals and Practical Applications focus on heating and cooling, the principles of adsorption, adsorption dynamics, and the availability of three-phase boundaries. Other chapters cover successful heat pipe applications and heat-pipe-based thermal control of fuel cells, solid sorption transformers, and electronic components and air-condition devices. The final chapters summarize the achievements in the field of heat and mass transfer study in heat pipes with variable properties such as gas loaded heat pipes. Several configurations of thermosyphons are showcased, with suggested applications. A number of examples of equipment using the thermosyphon technology are presented and, in the final chapter, the concept of flow boiling and flow condensation heat transfer in micochannels is analyzed in detail.

Author : Yuwen Zhang
Publisher : Unknown
Page : 128 pages
File Size : 46,6 Mb
Release : 2018
Category : Heat pipes
ISBN : 1536139092

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Heat Pipes by Yuwen Zhang Pdf

"Heat pipes are efficient passive devices that can transfer large amounts of heat over long distances with small temperature differences between the heat sources and sinks by evaporation and condensation of the working fluid. Heat can be transferred without the use of any mechanically moving parts such as pumps and active controls in heat pipes. The vapor and liquid circulate in the conventional heat pipes, including thermosiphons, via evaporation/condensation and capillary or gravitational forces. For pulsating heat pipes, liquid slug and vapor plugs in the capillary tube oscillate due to evaporation and condensation. The effective thermal conductivity of a heat pipe can be three orders of magnitude higher than that of a copper rod with the same size. A heat pipe can find its applications in many sectors of industries, including electronics cooling, energy systems, spacecraft thermal control, permafrost cooling, and manufacturing. This book presents current research and development related to the design, applications and technology of various heat pipes, including conventional heat pipes and thermosyphon, pulsating heat pipes, loop heat pipes, and variable conductance heat pipes. Design tools based on computational fluid dynamics simulation and HSHPTM"--

Author : Anonim
Publisher : Unknown
Page : 658 pages
File Size : 45,9 Mb
Release : 1983
Category : Power resources
ISBN : PSU:000022459206

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Energy Research Abstracts by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 994 pages
File Size : 49,6 Mb
Release : 1995
Category : Aeronautics
ISBN : UIUC:30112050127296

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Scientific and Technical Aerospace Reports by Anonim Pdf

Author : Anonim
Publisher : Unknown
Page : 964 pages
File Size : 49,6 Mb
Release : 1980
Category : Weights and measures
ISBN : UOM:39015029637561

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NBS Special Publication by Anonim Pdf