Heat Pipes
Heat Pipes

Author: P. Dunn

Publisher: Elsevier

Published: 2016-04-06

Total Pages: 359

ISBN-13: 0080912621

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It is approximately 10 years since the Third Edition of Heat Pipes was published and the text is now established as the standard work on the subject.This new edition has been extensively updated, with revisions to most chapters. The introduction of new working fluids and extended life test data have been taken into account in chapter 3. A number of new types of heat pipes have become popular, and others have proved less effective. This is reflected in the contents of chapter 5.Heat pipes are employed in a wide range of applications, including electronics cooling, diecasting and injection moulding, heat recovery and energy conservation, de-icing and manufacturing process temperature control, and chapter 7 discusses some of the latest uses, while retaining full data on those established for many years.Appendices have been updated, as appropriate.

Heat Pipes
Heat Pipes

Author: Yuwen Zhang

Publisher:

Published: 2018

Total Pages: 0

ISBN-13: 9781536139082

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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.

Description and Orbit Data of Variable-Conductance Heat-Pipe System for the Communications Technology Satellite
Description and Orbit Data of Variable-Conductance Heat-Pipe System for the Communications Technology Satellite

Author: National Aeronautics and Space Administration (NASA)

Publisher: Createspace Independent Publishing Platform

Published: 2018-07-21

Total Pages: 24

ISBN-13: 9781723369261

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A variable-conductance heat-pipe system (VCHPS) with methanol as the working fluid and a nitrogen and helium mixture as the control gas was used for the thermal control of a 200 W RF traveling wave tube of the Communication Technology Satellite. Three stainless steel heat pipes (one redundant) and an aluminum radiator were designed to transfer 196 watts for an evaporator temperature of 50 C. The system has operated for three years with no noticeable change in performance. On four occasions the heat pipes apparently deprimed. A short time after reducing the tube power, the heat pipes reprimed and the system continued to operate normally. The description, qualification testing, and orbit data of the VCHPS are presented. Gedeon, L. Glenn Research Center NASA-TP-1465, E-9880

Heat Pipes
Heat Pipes

Author: P. D. Dunn

Publisher: Elsevier

Published: 2012-12-02

Total Pages: 319

ISBN-13: 0080984029

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A comprehensive, up-to-date coverage of the theory, design and manufacture of heat pipes and their applications. This latest edition has been thoroughly revised, up-dated and expanded to give an in-depth coverage of the new developments in the field. Significant new material has been added to all the chapters and the applications section has been totally rewritten to ensure that topical and important applications are appropriately emphasised. The bibliography has been considerably enlarged to incorporate much valuable new information. Thus readers of the previous edition, which has established itself as the standard text on the subject, will find much additional data of interest whilst new readers will find the vast amount of useful data included in the appendices an indispensable source of reference.

Heat Pipe Design and Technology
Heat Pipe Design and Technology

Author: Bahman Zohuri

Publisher: Springer

Published: 2016-04-28

Total Pages: 539

ISBN-13: 3319298410

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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.