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Dynamical Modeling And Control Of Multiphase Heat Transport Systems Based On Loop Heat Pipes
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Book Synopsis Dynamical Modeling and Control of Multiphase Heat Transport Systems Based on Loop Heat Pipes by : Gellrich, Thomas Christoph
Download or read book Dynamical Modeling and Control of Multiphase Heat Transport Systems Based on Loop Heat Pipes written by Gellrich, Thomas Christoph and published by KIT Scientific Publishing. This book was released on 2022-12-05 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Transactive Control of Coupled Electric Power and District Heating Networks by : Maurer, Jona
Download or read book Transactive Control of Coupled Electric Power and District Heating Networks written by Maurer, Jona and published by KIT Scientific Publishing. This book was released on 2023-06-27 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Limited Information Shared Control and its Applications to Large Vehicle Manipulators by : Varga, Bálint
Download or read book Limited Information Shared Control and its Applications to Large Vehicle Manipulators written by Varga, Bálint and published by KIT Scientific Publishing. This book was released on 2024-01-08 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Self-Learning Longitudinal Control for On-Road Vehicles by : Puccetti, Luca
Download or read book Self-Learning Longitudinal Control for On-Road Vehicles written by Puccetti, Luca and published by KIT Scientific Publishing. This book was released on 2023-06-16 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Modeling of Loop Heat Pipes with Applications to Spacecraft Thermal Control by : Michelle L. Parker
Download or read book Modeling of Loop Heat Pipes with Applications to Spacecraft Thermal Control written by Michelle L. Parker and published by . This book was released on 2000 with total page 194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Heat Pipe Design and Technology by : Bahman Zohuri
Download or read book Heat Pipe Design and Technology written by Bahman Zohuri and published by Springer. This book was released on 2016-04-28 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Heat Pipe Science And Technology by : Amir Faghri
Download or read book Heat Pipe Science And Technology written by Amir Faghri and published by Global Digital Press. This book was released on 1995-03 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Recent Advances in Heat Pipes written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Introduction to Heat Pipes by : G. P. Peterson
Download or read book An Introduction to Heat Pipes written by G. P. Peterson and published by Wiley-Interscience. This book was released on 1994-09-22 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: Your complete resource on heat pipe operation, behavior, performance characteristics, and limitations This book is designed to help students, operations engineers, and mechanical and electrical engineers in the electronic packaging industry grasp the principles of operation for a wide range of heat pipes. Packed with examples and design information, it takes you through the background and historical development of heat pipes, discusses the interfacial phenomena that govern their operational characteristics, and presents the fundamental operating principles and limitations of both heat pipes and thermosyphons. Along with detailed presentations of the governing physical phenomena involved, this comprehensive guide features extensive coverage of: The background physics of fluids, their behavior in heat pipes, and associated interfacial phenomena Heat pipe design methodologies and manufacturing considerations Applications for cooling both electrical and mechanical systems The full range of heat pipe classifications, including rotating and revolving, micro, cryogenic, and variable conductance heat pipes, as well as thermal diodes and switches This book provides all the information and guidance you need to increase your understanding of these innovative devices and to begin to apply them to the thermal control of electronic devices and components.
Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of Heat Transfer and Flow Patterns in a Porous Wick of a Mechanically Pumped Loop Heat Pipe by : Md Shujan Ali
Download or read book Modeling of Heat Transfer and Flow Patterns in a Porous Wick of a Mechanically Pumped Loop Heat Pipe written by Md Shujan Ali and published by . This book was released on 2017 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, NASA space exploration has achieved new feats due to advancement in aerodynamics, propulsion, and other related technologies. Future missions, including but not limited to manned mission to Mars, deep space exploratory missions, and orbit transfer vehicles, require advanced thermal management system. Current state-of-the-art for spacecrafts is a mechanically pumped single phase cooling loop that are not enough to meet thermal-related challenges for future space missions. Loop heat pipes (LHP) are the solution for the required thermal management system that is compact, light-weight, reliable, precise, and energy efficient. These are two-phase systems that employ capillary forces instead of pumps to circulate the coolant. In these devices, the coolant evaporates and condenses in the evaporator and condenser, respectively. The condensed coolant liquid is driven toward the evaporator by capillary action in a wick structure located inside the evaporator. A mechanical pump is added to the liquid line of the loop to reach the distributed heat loads while controlling the temperature to produce an isothermal surface. In this work, flow patterns and heat transfer in the LHP evaporator wick is studied for various flow rates of the working fluid, wick thermal conductivity, porosity and permeability of wick, heat flux, and gravity condition. A CFD model has been developed to predict the performance of LHP due to the change in these parameters. The Volume of Fluid (VOF) model in ANSYS Fluent was modified using a User Defined Function (UDF) to calculate mass transfer between the liquid and vapor phases at the interface. The Lee phase change model was used to calculate the mass flux due to evaporation and condensation.
Download or read book Heat Pipes written by Yuwen Zhang and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 (Heat Sink-Heat Pipe Thermal Module) software are also presented.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1983 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proof of Operation in a Planar Loop Heat Pipe (LHP) Based on CPS Wick by : Junwoo Suh
Download or read book Proof of Operation in a Planar Loop Heat Pipe (LHP) Based on CPS Wick written by Junwoo Suh and published by . This book was released on 2005 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: As electronic design allows higher throughput in small packages, dissipating the heat load becomes a critical design factor. Available cooling approaches, such as extruded heat sinks, are insufficient to meet these ever-increasing cooling needs. The industry has found an ideal solution in heat pipes. Due to the emergence of high power equipment, development of more effective thermal control devices is warranted. During the past decades, many microscale heat pipes were invented, developed, and are still being researched. The micro Loop Heat Pipe (iLHP) under development is a next generation micro heat transfer device that utilizes the latent heat of a working fluid and has excellent heat transport capability as compared with that of standard metallic cooling devices. A family of planar LHPs based upon the use of a radically different type of wick structure made of planar coherent porous silicon (CPS) was researched, modified, and developed for several years at the University of Cincinnati. In this work, histories, configurations, principles, and mathematical modeling of the microscale heat pipes are surveyed. The description of the visualization LHP and the fourth generation LHP, their operation principles, operating ranges, and energy transport capability are discussed. The former one was constructed to improve our understanding of the complex phenomena in the loop and demonstrate operation, by observing through the transparent materials. The latter one was a series of planar LHP consisted of evaporator, condenser, and stainless steel tube and tested under vacuum conditions. Both systems showed the excellent heat dissipation capability.
Download or read book NBS Special Publication written by and published by . This book was released on 1980 with total page 964 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydraulic Research in the United States and Canada, 1978 by : Pauline H. Gurewitz
Download or read book Hydraulic Research in the United States and Canada, 1978 written by Pauline H. Gurewitz and published by . This book was released on 1980 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:
