Designing heat exchangersdouble pipe posted in student. The online publication and book series dedicated to the thermal. Heat exchanger analysis heat exchanger calculation. Kuppan is a noted authority in the area of heat exchangers, pressure vessels, and railway technologies. Heat exchangers 73 individual thermal resistances of the system. It is called a double pipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. The heat pipe utilizes phase change heat transfer inside enveloped structures. The ufactor is defined by an expression analogous to newtons law of cooling. In addition, an example of a shell and tube problem is added and the. In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid temperature greater than the coldest hotfluid temperatue.
In the analysis of heat exchangers, it is often convenient to work with an overall heat transfer coefficient, known as a ufactor. Theory, design and applications and millions of other books are. The documentation book furnace heat exchanger failure. Hvac courses understanding your heat exchanger the. What is heat pipe working of heat pipe exchanger for. Our heat pipe heat exchangers featuring thermosyphon technology that has been shown to transfer heat up to 10,000 times faster than other heat exchanger technologies allowing for a greater thermal energy transfer on a kw or btu recovery basis leading to near isothermal capabilities. A shell and tube heat exchanger is a class of heat exchanger designs. Combining each of these resistances in series gives. In addition to heating and cooling the air, a desuperheater can be added to this cycle that can provide most, if not all, hot water for use in the building as well. Their heat transfer coefficient in the evaporator and condenser zones is 103105 wm2 k, heat pipe thermal resistance is 0. Many types of heat exchangers have been developed for use in steam power plants, chemical processing plants, building heat and air conditioning systems.
In this paper the heat pipe heat exchanger hphe is presented as a new and very attractive heat exchanger type. Fired heaters the selection of a heat exchanger depends on many factors including capital and. Such an arrarigement for a counterflow heat pipe heat exchanger is shown in fig. The heat pipe has many applications, particularly in electronics and related area such as pc, laptop, display, artificial satellite, and telecommunication modules. This book is an encyclopedia of correlations, design procedures, plans, diagrams, tables, property lists, and shortcuts. This double action is economically accomplished by a heat exchanger. The fluids can be single or two phase and, depending on the exchanger type, may be separated or in direct contact. The use of heat pipes for waste heat recovery is an excellent way to save energy and prevent global warming. This comprehensive reference covers all the important aspects of heat exchangers hestheir design and modes of operationand practical, largescale applications in process, power, petroleum, transport, air conditioning, refrigeration, cryogenics, heat recovery, energy, and other industries. Heat exchangers this book describes the construction and application of many of the unfired heat exchanger types used in the process industries. He has authored numerous books, proceedings, journal articles, and conference papers covering heat exchangers and related topics.
A plate heat exchanger is a compact type of heat exchanger that uses a series of thin plates to transfer heat between two fluids. Heat pipes in modern heat exchangers sciencedirect. What are some good books for heat pipe heat exchangers both. The heat exchanger experts now tour the nation annually, providing hvac technicians everywhere the opportunity to develop their skills, and offer a wider array of services to their homeowner clients. Double pipe heat exchanger design requires use of the heat transfer rate, the log mean temperature difference, and an estimate of the overall heat transfer coefficient to calculate the estimated heat transfer surface area. Finally, applications of heat pipe to electronics cooling are presented. What is heat exchanger analysis performance calculation. Feb 23, 2000 this comprehensive reference covers all the important aspects of heat exchangers hestheir design and modes of operationand practical, largescale applications in process, power, petroleum, transport, air conditioning, refrigeration, cryogenics, heat recovery, energy, and other industries.
Nov 05, 2017 the equations for the analysis of a double pipe heat exchanger are stated and are summarized in the following suggested order. Therefore, this heat pipe element, or superconductor of heat, can be used to build a superconducting heat exchanger. The heat exchanger is found in large construction to support cooling process such as fossil fuel power plant. In the first part of the paper a presentation of the modelization of the hphe is given, in the second part some technologocal considerations are developped and in the third part two exemples of industrial applications are described.
Heat transfer is accomplished via multiple small heat pipes extending through the common wall of the hot and cold side flow streams. A heat exchanger is a system used to transfer heat between two or more fluids. The plateandframe or gasketed plate heat exchanger essentially consists of a pack of thin rectangular plates sealed around the edges by. As you can see, in a 12 heat exchanger, the tube side fluid flows the entire length of the. Thermal conductivity of heat pipe is around wmk 10,000wmk. Heat exchangers have widespread industrial and domestic applications. If the heat transfer coefficients at the tube side and the shell side are known, the overall heat transfer coefficient u can be. Modeling of the heat pipe heat exchangers for heat recovery. They need the documentation book for furnace heat exchanger failure. Completely revised and updated to reflect current advances in heat exchanger technology, heat exchanger design handbook, second edition includes enhanced figures and thermal effectiveness charts, tables, new chapter, and additional topicsall while keeping the qualities that made the first edition a centerpiece of information for practicing engineers, research, engineers, academicians. Facebook is showing information to help you better understand the purpose of a page. These are typically used in applications where there is a ducted exhaust stream. Written by experts from germany, uk and the usa, this book is a reliable adviser for engineers, managers, technicians and students who want to. Devices involving energy sources such as nuclear fuel pins or fired heaters are not normally regarded as heat exchangers although many of the principles.
In many engineering applications it is desirable to increase the temperature of one fluid while cooling another. Apr 20, 20 designing heat exchangersdouble pipe posted in student. Heat exchanger is one of the important devices in cooling and heating process in factories, buildings, transports and others. A heat exchanger is a component that allows the transfer of heat from one fluid liquid or gas to another fluid. The heat transfer ability of a heat pipe is determined by its diameter, fluid type, wick. If somebody can recommend me some very good books or articles on double pipe heat exchanger, i would be very.
Furnace heat exchanger documentation book highly informative book contains over 363 high resolution photos of heat exchanger failure, representing 109 different furnaces. Heat pipe and phase change heat transfer technologies for. The heat pipe is a wellknown cooling module for advanced electronic devices. It is called a doublepipe exchanger because one fluid flows inside a pipe and the other fluid flows between that pipe and another pipe that surrounds the first. This book describes the construction and application of many of the unfired heat exchanger types used in the process industries.
Counter flow heat exchangers are the most efficient of the three types. The thermal analysis of a double pipe heat exchanger is illustrated in detail, as is the thermal rating of a shellandtube exchanger. As you can see, in a 12 heat exchanger, the tube side fluid flows the entire length of the shell, turns around and flows all the way back. A heat pipe is a passive energy recovery heat exchanger that has the appearance of a common platefinned water coil except the tubes are not interconnected. Instead, the original flow streams remain intact and separated. The equations for the analysis of a double pipe heat exchanger are stated and are summarized in the following suggested order. Modeling and design of plate heat exchanger intechopen. Chapter 5 heat exchangers faculty of engineering and. Flow in a doublepipe heat exchanger can be cocurrent or countercurrent. Air that is exhausted from a building, to maintain favorable indoor air quality, has been cooled summer or heated winter to the typical space temperature of 70 to 75f. Analysis of double pipe heat exchangers, suggessted order. The doublepipe heat exchanger is one of the simplest types of heat exchangers. The double pipe heat exchanger is one of the simplest types of heat exchangers.
In contrast to the parallel flow heat exchanger, the counter flow heat exchanger can have the hottest coldfluid. This handbook presents the most important technologies concerning the reduction of fouling in heat exchangers and the appropriate technologies of removal and cleaning. To reduce the temperature of a hot fluid by means of a cooler fluid 3. The two most common heat exchanger design problems are those of rating and sizing. Here is an example of a 12 1 shell pass and 2 tube passes heat exchanger.
Analysis of double pipe heat exchangers, suggessted order of. Heat pipes employ phase change to transfer thermal energy from one point to another by the vaporization and condensation of a working fluid or coolant. The heat exchange duty a llows calculation of the log mean. The high thermal conductivity enables a heat pipe to transfer, and dissipate heat to a more convenient location. Additionally, it is divided into two sections by a sealed partition. Heat exchanger design handbook mechanical engineering. A double pipe heat exchanger consists of one pipe inside another. Double pipe heat exchanger design with counterflow or. Pdf heat pipe in modern heat exchangers researchgate. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact. Mar 26, 2018 heat pipe is a heat transferexchanging device. Hot air passes through one side evaporator and is cooled while cooler air passes through the other side condenser. It can be operated as a parallel flow or as a counterflow heat exchanger.
The double pipe heat exchanger is one heat exchanger pipe inside another larger pipe for either counter flow or parallel flow pattern. To heat a cooler fluid by means of a hotter fluid 2. Hvac courses understanding your heat exchanger the heat. The book is a useful reference for those with experience and an accessible. Heat pipes rely on a temperature difference between the ends of the pipe, and cannot lower temperatures at either end below the ambient temperature hence they tend to equalize the temperature within the pipe. The heat pipe utilizes phase change heat transfer inside enveloped structures, where the working fluid evaporates in heated zone, and vapor moves to the. Sekulic, dr sc eng, is an adjunct professor in the mechanical engineering department and a senior research manager at the center for robotics and manufacturing systems in the college of engineering at the. He is author of the successful heat exchanger design handbook, first edition published by marceldekker now crc press in 2000. Completely revised and updated to reflect current advances in heat exchanger technology, heat exchanger design handbook, second edition includes enhanced figures and thermal effectiveness charts, tables, new chapter, and additional topicsall while keeping the qualities that made the first edition a centerpiece of information for practicing engineers, research, engineers. A heat exchanger is a device used to transfer heat between two or more fluids. The prach family has earned their expert title after decades of experience, and literally writing the book on heat exchanger inspection and repair. This book will briefly introduce heat pipe technology and then highlight its basic applications for passive thermal control. Contents preface li acknowledgments liii author lv chapter1 heatexchangers. Heat exchanger, any of several devices that transfer heat from a hot to a cold fluid.
Dear all, for some time, i have been sizing all the process equipments used in gdu. As its name implies, this type of heat exchanger consists of a shell a large pressure vessel with a bundle of tubes inside it. 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. Furthermore, the general and scientific fundamentals of heat transfer are explained. Pdf heat exchanger design handbook matt pennington. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and. The properties that control this process are based on the ability of the pe pipe to transfer heat either out of, or into, the. Amsenergy supplies our clients with the most efficient style of heat pipe heat exchangers available. Heat pipe heat exchangers start out as conventional tube and fin coils, where each of the tubes is converted into a super conducting heat pipe element. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. Reflecting the authors extensive practical experienc. Heat pipe engineering ebook advanced thermal solutions.
Chapter hvac applications for pe pipe 464 exchanger. Heat exchangers are commonly used in industry, and proper design of a heat exchanger depends on many variables. 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. According to our market experts, heat pipes are present in the cooling and heat transfer systems found in computers, cell phones, and satellite systems. Manor heat pipe heat exchanger as standard are suitable for airto air heat recovery for a temperature range of 10. Functionality, advancements and industrial applications of. The overall heat transfer coefficient, fouling factors, lmtd logarithmic mean temperature difference correction factor, and heat exchanger effectiveness are introduced and examples of their use are given. They are widely used in space heating, refrigeration, air conditioning, power stations, chemical plants, petrochemical plants, petroleum refineries, natural. R sekulib university of kentucky introduction a heat exchanger is a device that is used for transfer of thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a.
Pdf design of double pipe heat exchanger kirti zare. Hvac heat pipe energy recovery act advanced cooling. If somebody can recommend me some very good books or articles on double pipe heat exchanger, i would be very thankful. The documentation book furnace heat exchanger failure the. Heat exchangers are used in both cooling and heating processes.