Heat pipe design book

Generate performance reports, psychrometrics and dimensional drawings. Mechanical design of heat exchangers and pressure vessel. Oct 12, 2006 peter kew first became involved in heat pipes in the late 1970s as a research officer with international research and development working on a range of heat transfer and energy conservation projects, including heat pipe development which was then led by david reay. Ats engineering ebook advanced thermal solutions, inc. Binary liquid heat pipes or gasloaded heat pipes are used to maintain a certain temperature range despite variations in the heat rate. Written by a former senior chief scientist at lockheed who has also worked for westinghouse and the u. When the heat source is much smaller than the heat sink base, a flat. I have been involved in heat pipe design, fabrication, and testing for almost 30 years.

Also provides quick access to heat transfer and pressure loss data, plus manual thermal design methods and examples, for heat exchangers involving single phase flow duties. Top american libraries canadian libraries universal library community texts project gutenberg biodiversity heritage library childrens library. Heat pipes are used in a wide range of applications, including electronics cooling, diecasting and injection moulding, heat recovery and energy conservation, deicing and manufacturing process temperature control, and in domestic appliances. As with any design process, many of the decisions that must be taken are interrelated and the process is iterative. For example, choice of the wick and case material eliminates many candidate working fluids often including water due to.

A tubular heat exchanger exemplifies many aspects of the challenge in designing a pressure vessel. Heat pipe components principally the wick, working fluid and wall material have to be carefully selected for compatibility with one another over the appropriate operating temperature range. Details as to considerations of pipe systems are given in chapter 6, design of pumps. We order this book in bulk to give to our engineers and research technicians i just bought 20 more copies. A rule of thumb for the effective thermal conductivity of a heat pipe is 4000 wmk. This book provides a practical study of modern heat pipe engineering, discussing how it can be optimized for use on a wider scale. Embed embed for hosted blogs and item heat pipe selection software from anywhere, anytime. Engineering design guide for heat sinks and heat pipes. Such considerations lead to successful operation for the design life of the unit. Provides information that is extremely difficult to find. This book takes a systematic approach to the subject, focusing on the selection, design, rating, and operational challenges of various types of heat exchangers.

A loop heat pipe with coherent pores integrated to the heat source is considered as a calculation model in this paperfig. Heat pipe design employs the theory of both hydrodynamic and heat transfer processes. A practical guide for planning, selecting and designing of shell and tube exchangers takes users on a stepbystep guide to the design of heat exchangers in daily practice, showing how to determine the effective driving temperature difference for heat transfer. Heat pipe design and technology modern applications for. Figure 2 compares the heat transport for heat pipes with different diameters. Pipe systems have always special characterstics and must be closely inspected for the choice of the appropriate pump. Ideal when heat needs to be moved more than 3050mm remote fin stacks heat exchangers are a perfect example as with any heat pipe heat sink design, size the heat pipe with an additional 25% thermal headroom if youre interested in spreading heat to reduce hot spot andor attach to a local heat exchanger. In addition, the author discusses heat pipe technology pertinent to the design and application of selfcontrolled, variable conductance heat pipes for spacecraft thermal control. Bahman zohuri this book provides a practical study of modern heat pipe engineering. Heat pipe design guide advanced cooling technologies. Heat pipe manufacturers generally provide data sheets. With its unique ability to transfer heat over large distances with minimal loss, the heat pipe has emerged as a proven environmentally friendly. A novel flat heat pipe has been developed to assist in meeting the high thermal design requirements in high power microelectronics, power converting systems, laptop computers and spacecraft thermal control systems. However, the operational temperature of the heat pipe also affects the sonic limit of the heat pipe.

This chapter discusses the main components of the heat pipe and the materials used. Theory, design and applications kindle edition by reay, david, mcglen, ryan, kew, peter. Use features like bookmarks, note taking and highlighting while reading heat pipes. Heat pipe engineering ebook advanced thermal solutions. Heat pipe types and applications capillary limitation and temperature characteristics sonic, entrainment, and boiling limitations heat pipe operating conditions analysis of controlled heat pipes fluids, wick structures, and materials for heat pipes heat pipe design procedures heat pipe manufacturing procedures applications of. An introduction to operational and design principles, this book. Heat pipes are one of the most efficient ways to move thermal energy from one point to another.

Today, heat pipes are used in a variety of applications from space to handheld devices that fit in your pocket. International heat pipe conferences have been conducted, two books on heat pipes have been authored, and numerous papers have been written on the. Acts expertise with heat pipe technology can find a thermal solution for your industry. After completion, engineers will be able to design a more effective heat sink. However, in an actual application when a heat pipe is soldered or epoxied to the base of a heat sink, the effective thermal conductivity of the heat pipe may be drastically reduced due to the extra thermal resistances added by the bonding. Written by wellknown authors in the field of heat transfer, this book covers all the most commonly used types of heat exchangers, including condensers and evaporators. This latest edition has been thoroughly revised, updated and expanded to give an indepth coverage of the new developments in the field. Heat pipe heat exchanger design theory r k shah and a d. This book describes the characteristics of heat pipes under steadystate and transient operating conditions. There are several limits that govern heat pipe theory, however in terrestrial applications the capillary limit is the most limiting factor. Heat pipes, 6th edition, takes a highly practical approach to the design and selection of heat pipes, making it an essential guide for practicing engineers and an ideal text for postgraduate students. The issue of compatibility and the results of life tests on heat pipes and thermosyphons remain critical aspects of heat pipe design and manufacture.

Capillary action, sonic limitation, entrainment limitation, boiling. This book provides a practical study of modern heat pipe engineering. Pdf this book provides a practical study of modern heat pipe engineering, discussing how it can be optimized for use on a wider scale. The application of heat pipes should be considered when the thermal design is either conduction limited or when nonthermal goals such as weight cannot be achieved with other materials such as solid alum. The online publication and book series dedicated to the thermal. To summarize, if you are a student just learning about heat pipes, or are on a limited budget, then this is a great book to get started. Design considerations when using heat pipes electronics cooling. This new edition has been revised to include new information on the underlying theory of heat pipes and heat transfer, and features fully updated applications, new data sections, and updated.

Heat pipe heat exchanger design theory r k shah and a. The crosssectional area of a heat pipe is the direct function of both the sonic and entrainment limit of the heat pipe. An introduction to operational and design principles, this book explores the use of heat pipes, particularly in highheat flux applications and in situations in which. An essential guide for practicing engineers and an ideal text for postgraduate students, the book takes a highly practical approach to the design and. Design a controllable wrap around heat pipe design strategy doas unit neutral air dehumidification heat pipe dhp economic analysis. Heat pipe operating principles pressure drops operating temperature functional types of heat pipes heat pipe operating characteristics heat pipe design and selection design considerations mostly for vendors selecting heat pipes as part of thermal control system and. Investigation of a novel flat heat pipe journal of heat. Beginning with a definition of the problem, including the temperature.

High or very low operating pressures and temperatures, combined with sharp temperature gradients, and large differences in the stiffnesses of adjoining parts, are amongst the legion of conditions that. Dec 16, 2014 this webinar will provide a complete guide to designing, modeling, and implementing heat pipes into your heat sink. It emphasizes the physical aspects of heat pipe behavior and develops design formulas on the basis of mathematical models and empirical observation. Working fluids, wick configurations, reservoirs, and pipe materials are dealt with, and cleaning, assembly, evacuation, charging, and closure of hp are covered. Project description by means of knowledge about the theory of heat pipes, one is now able to carry out a basic calculation of a heat pipe. Download it once and read it on your kindle device, pc, phones or tablets. The operating principles of heat pipes hp are expounded, along with a discussion of different types of hp, and the underlying theory, design, and fabrication of hp. A comprehensive, uptodate coverage of the theory, design and manufacture of heat pipes and their applications. Celsia is a custom heat sink manufacturer specializing in vapor chamber and heat pipe thermal assemblies. Peter kew first became involved in heat pipes in the late 1970s as a research officer with international research and development working on a range of heat transfer and energy conservation projects, including heat pipe development which was then led by david reay. This new edition has been revised to include new information on the underlying.

Also provides quick access to heat transfer and pressure loss data, plus manual thermal design methods and examples, for. In addition, the author discusses heat pipe technology pertinent to the design and application of selfcontrolled, variable. The total heat load a heat pipe can carry is a function of total length, evaporator and condenser length, diameter, and orientation with respect to gravity. What is a heat pipe heat pipes basics and technology. A heat pipe is a heattransfer device that combines the principles of both thermal conductivity and phase transition to effectively transfer heat between two solid interfaces. The hydrodynamic component of the theory addresses pressure drop in the vapor space and wick structure. A good description of the history of the heat pipe technology can be found in an early article published by yale eastman currently a director of act in scientific american in may 1968. White papers, engineering documents and specifications. An introduction to operational and design principles, this book offer. Heat pipes are an extremely effective method of reducing hot spot temperatures and increasing allowable power in a system by moving heat to an external sink or spreading heat along a surface. This handbook was prepared under nasa contract nas523406, updating of a heat pipe design and applications handbook.

Overallan excellent book that covers the subject in great depth for the benefit of heat pipe designers and usersengineers will no doubt continue to stretch. Heat pipe design handbook, volume 1 internet archive. Discover delightful childrens books with prime book box, a subscription that delivers new books every 1, 2, or 3 months new customers receive 15% off your. The application of heat pipes should be considered when the thermal design is either conduction limited or when nonthermal goals such as weight cannot be achieved with other materials such as solid aluminum andor copper. Learn how to use step by step with tutorial videos. A heat pipe is a heat transfer device that combines the principles of both thermal conductivity and phase transition to effectively transfer heat between two solid interfaces. Heat sink design and optimization is done jointly between our us headquarters and taiwan facilities, while heat sink manufacturing is done exclusively at the latter. Heat pipes, 6th edition, takes a highly practical approach to the design and selection of heat pipes. At the hot interface of a heat pipe a liquid in contact with a thermally conductive solid surface turns into a vapor by absorbing heat from. Loop heat pipe with coherent porous wick since the porous material used for current heat pipes is usually stochastic structure, it is hard to apply analytical or numerical methods for design optimization.