Heat exchangers design and theory sourcebook internet archive. A sourcebook series in thermal and fluids engineering chi, s. How to model a heat pipe heat transfer and fluid flow. The design of a cryogenic loop heat pipe clhp is presented in the paper. Specially fabricated heat pipe is made to accommodate vapor velocity fluctuation through the vapor core and the end cap brazing effects. Us7460367b2 method and system for dissipating thermal.
This volume is published, as a bound print volume and in electronic format on cdrom and online, in two editions. Thermophysical property models and effect on heat pipe modelling. A comprehensive, uptodate coverage of the theory, design and manufacture of heat pipes and their applications. Overall, heat pipes theory, design and applications is an excellent book that covers the subject in great depth for the benefit of heat pipe designers and users. Heat pipe theory and practice a sourcebook mcgrawhill 1976. The book consists of fourteen chapters, two appendices, and over 400 illustrations, along with numerous presents basic and advanced techniques in the analytical and numerical modeling of various heat pipe systems under a variety of operating. Get your kindle here, or download a free kindle reading app. Heat up the heating end of the heat pipe emperature 700c and dissipate 5 6. The heat pipe is a highperformance heat transfer device, able to transfer heat at high rates, over considerable distances, with almost no temperature drop. The study investigates the temporal performance of heat pipe using surfactant free al2o3deionised water nanofluids. Heating, ventilation, air conditioning and refrigeration. Handbook of heating, ventilation and air conditioning. Guide to hvac design, theory of operation, and primary.
Theory, design and applications, peter kew download here 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. A heat pipe is a s ystem which is able to transfer high heat fluxes from a heat source to a heat sink with a low thermal resistance using liquidvapour phase change reay et al. The wick structure for each heat pipe is designed consisting of 2 layers 200 mesh sst 304 and 2 layers 120 mesh sst 304 wicks 304 quality stainless steel, forming totally fourlayer wick structure. Chi is the author of heat pipe theory and practice 5. Application of nanofluids in heat pipes usually presents satisfactory.
Pdf on jan 1, 2016, stephane lips and others published overview of heat pipe studies. This latest edition has been thoroughly revised, updated and expanded to give an indepth coverage of the new developments in the field. Analysis of behaviour of computational model to evaluate. 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. Heat pipes and its applications lunds tekniska hogskola. Aug 22, 2006 the standard resource on heat pipe theory, design and applications. However, until recently, the high cost and complex construction use of these marvelous mechanisms has generally limited their use to space technology. 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. The standard resource on heat pipe theory, design and applications. Dunn p d and reay d a 1982, heat pipes, pergamon press, new york. Fully revisited to cover the latest techniques, tools, refrigerants, and equipment, air conditioning and refrigeration, second edition, provides a thorough introduction to the basic principles and practices of the ac and refrigeration industry.
Read experimental investigation on sintered porous wicks for miniature loop heat pipe applications, experimental thermal and fluid science on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Qmax customer requirement then heat pipe is passed test frequency. Chapter 51, thermal storage, has new content on grid reliability, renewable power integration, heat storage, emergency cooling, water treatment, and commissioning. Air conditioning and refrigeration, 2e a complete, uptodate guide to ac and refrigeration. It is elucidated the maximum heat transfer coefficient of 31.
Keep it cool or heat things up this third volume of audels hvac library gives you a comprehensive, handson guide to installing, servicing, and repairing all basic air. Corrugated conductive partition effects on mhd free convection of cntwater nanofluid in a cavity j. It is both a useful sourcebook and an accessible introduction for those approaching the topic for the first time. Anytime a liquids change to a gas vapor, it must give up its heat and the heat is carried off in the. 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. Method and system for dissipating thermal energy from conductioncooled circuit card assemblies in which thermal energy is directed into proximate heat sink assemblies and additionally is conveyed by heat pipes to one or more remote heat sink assemblies configured for the transfer of thermal energy to a flow of air and located within a chassis at a position remote from the system thermal load. How to model a heat pipe a brief explanation is provided of a networkbased method that is suitable for modeling constant conductance heat pipes cchps, also called fixed conductance heat pipes or fchps and vapor chamber fins. Your complete resource on heat pipe operation, behavior, performance characteristics, and limitations. Jan 22, 2015 the total heat transferred axially by a heat pipe q. Design and manufacture of ceramic heat pipes for high. 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. Nielsen book data summary 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. Hvac stands for heating, ventilation, and air conditioning.
The working fluid of heat pipe is soft, demineralized water. The three hphx configurations in the present investigation include hphx with single wick structure hphx 1, hphx with composite wick structure hphx 2 and hybrid hphx hphx 3 which is the combination of hphx 1. A new approach for thermofluid behavior through porous layer. With its unique ability to transfer heat over large distances with minimal loss, the heat pipe has emerged as a proven environmentally friendly, energysaving solution for passive thermal control. Nov 01, 20 read experimental investigation on sintered porous wicks for miniature loop heat pipe applications, experimental thermal and fluid science on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. The work was administered by the goddard space flight center, greenbelt, maryland, and mr. Partial derivatives, temperature, thermal conduction, thermodynamic processes, properties of gases, the first and second laws of thermodynamics, heat capacity, and the expansion of gases, enthalpy, the joule and joulethomson experiments, heat engines, the clausiusclapeyron equation, adiabatic demagnetization, nernsts. Ats engineering ebook advanced thermal solutions, inc. Experimental performance of a heat pipe sciencedirect. Heat pipe science and technology 1995 edition open library.
Pdf overview of heat pipe studies during the period 20102015. The present work aims at obtaining mass flow rate measurements in heat pipe wick structures under conditions that simulate the operation of a heat pipe, and builds on the work initiated by fields. Design characteristics of a heat pipe test chamber microform karl w. Experimental investigation of heat pipe with annular fins. Temporal deterioration in thermal performance of screen mesh. The three hphx configurations in the present investigation include hphx with single wick structure hphx 1, hphx with composite wick structure hphx 2 and hybrid hphx hphx 3 which is the combination of hphx 1 and hphx 2.
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. Heat pipe science and technology mechanical engineering by. Inclination angle also affects the thermal performance of heat pipe. The results obtained in the development of the first concept, a multiconverter array connected to the isotope power source through a heat pipe, are presented. A sourcebook, hemishphere publishing corporation, washington. Development of loop heat pipes with sintered nickel wick using. This is the building system that regulates the inside temperature of the building and, in some systems, the air quality as well. The nanofluids prone to agglomeration and sedimentation with time are expected to influence the performance of heat pipe. A sourcebook series in thermal and fluids engineering s. Air conditioning, heat pumps and distribution systems, james e. Heattransfer characteristics of a cryogenic loop heat pipe. An essential guide for practicing engineers and an ideal text for postgraduate students, the book takes a highly practical approach to the design and selection of heat pipes.
For selecting the working fluid, important thermo physical. The principle of the heat pipe is an amazingly sim ple one. Apr 19, 2016 the study investigates the temporal performance of heat pipe using surfactant free al2o3deionised water nanofluids. The total heat transferred axially by a heat pipe q. For selecting the working fluid, important thermophysical. A sourcebook series in thermal and fluids engineering. The experimental performance of different heat pipe heat exchanger hphx configurations using distilled water as the working fluid is reported in the present study.
This thesis is brought to you for free and open access by the theses at tigerprints. Apr 10, 2017 the experimental performance of different heat pipe heat exchanger hphx configurations using distilled water as the working fluid is reported in the present study. Available in the national library of australia collection. A rule of thumb for the effective thermal conductivity of a heat pipe is 4000 wmk. The definitive guide to hvac designthis practical manual describes the hvac system design process step by step using photographs, drawings, and a discussion of pertinent design considerations for different types of hvac components and systems. It describes the variety of complex and coupled processes of heat and mass transfer in heat pipes. Heat pipes with variable thermal conductance property for space. Experimental performance and parametric analysis of heat pipe. Theory and practice david j house suitable as a training manual and a daytoday reference, shiphandling is the comprehensive and up to date guide to the theory and practice of ship handling procedures.
Heat and mass transport in heat pipe wick structures. Books, images, historic newspapers, maps, archives and more. Beginning with a definition of the problem, including the temperature. Heat and thermodynamics download book free computer books. Hydronic heating and cooling system 101 basic system 104 temperature classifications. Heat pipes are remarkably versatile devices, capable of being manufactured at the very small scale such as for cooling electronic devices and on a much larger scale such as for. This new edition has been revised to include new information on the underlying. This method has been used in the aerospace industry for about thr ee decades for supporting systemlevel design analysis. Larsen angel, 9780071753036, available at book depository with free delivery worldwide. Open heat pipe design handbook this handbook was prepared under nasa contract nas523406, updating of a heat pipe design and applications handbook. Partial derivatives, temperature, thermal conduction, thermodynamic processes, properties of gases, the first and second laws of thermodynamics, heat capacity, and the expansion of gases, enthalpy, the joule and joulethomson experiments, heat engines, the clausiusclapeyron equation, adiabatic demagnetization, nernsts heat. Design and production of high temperature heat pipe heat. Beyond 25 o inclination, heat transport rate starts to decrease. The organization of heat pipe theory provides parallel treatment of the fundamental laws of thermodynamics.
Heat and thermodynamics download book free computer. Synopsis 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. Heat pipe theory and practice 1976 edition open library. The principles of hvac design include the basic theory of system operation and the factors that determine the size and capacity of the equipment installed in.
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