Regenerative heat exchangers involve the alternate passage of the hot and cold fluid streams through the same flow area. Cfd analysis of double pipe counter flow heat exchanger duration. Classification of heat exchangers transfer of heat from one fluid to another is an important operation for most of the chemical industries. Heat exchangers heat exchangers are used to transfer heat between two sources. The devices that are used to facilitate heat transfer between two or more fluids at different temperatures are known as heat exchangers. All books are in clear copy here, and all files are secure so dont worry about it. So, the heat transfer is taking place through this surface and that is related to pi d 0. Therein, popular analytical techniques such as log mean temperature difference lmtd and effectivenessnumber of. Freestudy heat transfer tutorial 3 advanced studies this is the third tutorial in the series on heat transfer and covers some of the advanced theory of convection. Exchanger design and simulation that is the heat exchanger testing. Understanding the fundamentals governing heat transfer is key to designing equipment that involves heat exchange. In compact heat exchangers, the two fluids usually move perpendicular to each other.
The first type of a heat exchanger is called the recuperative type, in which heat are exchanged on either side of a dividing wall by fluids. Approximate analysis in boundary layer theoretical concepts of natural free convention heat transfer emperical relations for free convention heat transfer condensation heat transfer over vertical plate fundamentals of boiling heat transfer boiling heat transfer corelations classification of heat exchangers various types of. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers. And we define it as 4 times the free flow area divided by weighted perimeter. Radiation radiative heat transfer, stefanboltzmann law, wiens displacement law, black and grey surfaces, view factors, radiation network analysis. Nptel, online courses and certification, learn for free. And i have shown in my in one of my earlier lecture show, either it is called double pipe heat exchanger or tube in tube heat exchanger. A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. So, already we have talked about the double pipe heat exchanger in one of our earlier. Selection of heat exchanger tema layout and number of. Reason for heat exchangers a heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another hot and cold fluid. All these problems may be overcome when the liquid is circulated at high velocity through the heat exchanger tubes to enhance the heat transfer rate and. The course can also serve as a refresher for graduate students. Another approach introduce the definition of heat exchanger effectiveness, which is a dimensionless with ranging between 0 to1.
General classification of heat exchangers is shown in the figure 1. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. So, we have a double type heat exchanger double tube heat exchanger. Report process design of heat exchanger nptel your. Heat exchangers march 21, 2005 content instruction heat transfer and fluid flow heat exchangers heat exchangers and systems summary instruction heat transfer.
Heat transfer nptel online videos, courses iit video lectures. Qualitative dependence of the fluid temperature on position inside a singlepass heat exchanger is shown in fig. This type provides a large heat transfer surface in a small space. Pdf the double pipe heat exchanger is one heat exchanger pipe inside another larger pipe for either counter flow or parallel flow pattern. Heat exchangers fundamentals and design analysis prof. Heat exchanger design su thet mon than, khin aung lin, mi sandar mon abstractthis paper is intended to assist anyone with some general technical experience, but perhaps limited specific. A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid.
A free powerpoint ppt presentation displayed as a flash slide show on id. Different types and sizes of heat exchangers are used in steam power plants, chemical processing units, building heating and air conditioning, house hold. Now we will try to go in details about this shell and tube heat exchangers. Plate type heat exchangers are not widely used because of the inability to reliably seal the large gaskets between each of the plates. So, we are again back we were learning heat pipes and heat pipe heat exchangers. Hear and mass transfer is a comprehensive textbook for the students of mechanical engineering and a mustbuy for the aspirants of different entrance. To get fluid streams to the right temperature for the next process. Heat exchanger effectiveness ntu method if more than one of the inlet and outlet temperature of the heat exchanger is unknown, lmtd may be obtained by trial and errors solution. This course for undergraduate students covers the fundamental aspects and quantitation of different modes of heat transport. Browse and download heat transfer books of various titles, written by many authors and published by a number of publications for free in pdf format. So, there is a central tube and there is another tube surrounding it. Heat exchangers are practical devices used to transfer energy from one fluid to another.
A heat exchanger has a first tube bundle for circulating a first fluid, a second tube bundle for circulating a second fluid, and a shell which accommodates the tube bundles arranged in series in the shell, so that when a third fluid is circulated through the shell it successively contacts the tube bundles for a successive heat exchange between the third fluid and a respective one of the two. This latter method is being used more and more nowadays. Heat exchangers are also abundant in chemical and process industries. They can operate at high pressures, are easy to clean and can be made of a wide variety of. So, tubular heat exchanger, the simplest type could be a double pipe. Thermal design considerations thermal design of a shell and tube heat. Then we will talk about the shell and tube heat exchangers and another variety of. Heat exchangers are devices that regulate efficient heat transfer from one fluid to another. Mechanical design standards of shell and tube heat exchangers mechanical design of heat exchangers includes design of various pressure and nonpressure parts. Pdf a heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. Heat exchangers are devices used to transfer heat between two or more fluid streams.
The basic design equation and overall heat transfer coefficient the basic heat exchanger equations applicable to shell and tube exchangers were developed in chapter 1. Iits and iiscs free open online web and video courses for science and engineering under nptel similar websites like nptel. A computer program in matlab has been written for shell and tube heat exchanger design. The exchange can take place between a process stream and a utility stream cold water, pressurized steam, etc, a process stream and a power source electric heat, or between two. Sep, 2019 the latter types are called regenerators, recuperator surface exchangers. Nptel chemical engineering chemical engineering design ii lecture 1.
Heat exchanger heat exchanger performance, lmtd and ntu methods. Heat and mass transfer by rk rajput pdf free download. Heat exchangers are normally classified depending on the transfer process occurring in them. Heat exchangers are utilized as a primary means of heat transfer between two fluids and are employed in numerous applications including nuclear, chemical, and mechanical systems. Pdf heat and mass transfer by rk rajput pdf free download. Selection of heat transfer models and fouling coefficients for shell side and tube side. Heat exchanger design fundamental equation youtube. Nptel video lectures, iit video lectures online, nptel youtube lectures, free video lectures, nptel online courses, youtube iit videos nptel courses. Optimal design of double pipe heat exchanger structures. Heat and mass transfer standard books pdf free download. The heat transfer notes pdf ht notes pdf book starts with the topics covering modes and mechanisms of heat transfer, simplification and forms of the field equation, one dimensional transient conduction heat transfer, classification of systems based on. Pu tting the free gas section equal to f, and reme mber. Due to the custom nature of all xchanger heat exchangers, this manual discusses the characteristics and procedures that are common to all exchangers.
Aa, bg, c, d, hp, hr, lc, and tv series heat exchangers. Shell and tube heat exchanger shell and tube heat exhangers are one of the most common heat exchange equipment found in all plants. Since all heat exchangers considered in this experiment have a single pass for both the hot and cold fluids, the discussion below is limited to singlepass heat exchangers. Read online process design of heat exchanger nptel book pdf free download link book now. Increased savings with microchannel heat exchangers. Thermal design of a shell and tube heat exchanger typically includes the determination of heat transfer area, number of tubes, tube length and diameter, tube layout, number of shell and tube passes, type of heat exchanger fixed tube sheet, removable tube bundle etc, tube pitch, number of baffles, its type and size, shell and tube side. The heat exchanger area is minimized and the thermofluid dynamic conditions are considered for the use of the right transport correlations, together with design specifications, such as, maximum pressure drops and minimum excess area. They are the most versatile type of heat exchangers. Types of heat exchanger, process design of shell and tube heat exchanger, condenser, and reboilers.
With microchannel heat exchangers, a cooling system requires less refrigerant, weighs less, takes up less space and. Fundamentals of heat exchanger design download ebook pdf. Engineers involved in the application, and selection of heat exchangers require a basic understanding of heat exchanger theory, operation, and components. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 21 lecture 1. The chapters in the book provide valuable insights on the principles of conduction, convection, boiling and condensation, heat exchangers, radiation, and diffusion mass transfer. Design and simulation of heat exchangers iit kharagpur july 2018. Jan 31, 2018 heat and mass transfer by rk rajput pdf free download. This paper investigates the design optimization of double pipe heat exchanger using mathematical programming. Some of the types of shell and tube heat exchangers available include helical coil heat exchangers and double pipe heat exchangers, and some of the applications include preheating, oil cooling, and steam generation. Download process design of heat exchanger nptel book pdf free download link or read online here in pdf.
Such devices for efficient transfer of heat are generally called heat exchanger. Heat transfer nptel online videos, courses iit video. Learn for free, pay a small fee for exam and get a certificate. Heat transfer books free download ebooks, notes free.
A heat exchanger is a device that is used to transfer thermal energy enthalpy between two or more fluids, between a solid surface and a fluid, or between solid particulates and a fluid, at different temperatures and in thermal contact. Download ebooks for free from engineering study material site. So, d 0 is the external diameter of the inner tube and we define the equivalent diameter by the 4 times the net free flow area, it remains the same this is the net free flow area and this hatched part. Gaitonde, department of mechanical engineering, iit bombay. Combining each of these resistances in series gives. John richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 11 41. Being made entirely of aluminium, the whole heat exchanger including the end cap is resistant to galvanic corrosion. Javier tirenti page 11 an alternative to the fatigue analysis according to the provisions of part 5 div. Liptak 1970, 1985, 1995, 2005 introduction the transfer of heat is one of the most basic and best understood unit operations of the processing industries. Using aspen hysys and aspen edr for ratingchecking heat exchanger design. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 41 lecture 1. Heat exchangers jordan university of science and technology. Warranty and service contact information is also included.
Pdf heat and mass transfer books collection free download. The exchange can take place between a process stream and a utility stream cold water, pressurized steam, etc, a process stream and a power source electric heat, or between two process streams resulting in energy integration and reduction of external heat sources. Apr 19, 2012 shell and tube heat exchanger shell and tube heat exhangers are one of the most common heat exchange equipment found in all plants. The tutorials are designed to bring the student to a level where he or she can solve problems involving practical heat exchangers. 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.
Here you can download the free lecture notes of heat transfer pdf notes ht pdf notes materials with multiple file links to download. One of these methods is the wellknown kern method, which was an attempt to correlate data for standard exchangers by a simple equation analogous to equations for flow in tubes. Thermal design considerations the flow rates of both hot and cold streams, their terminal temperatures and fluid properties are the primary inputs of thermal design of heat exchangers. Pdhonline course m371 2 pdh shell and tube heat exchangers. Understanding heat exchangers types, designs, applications.
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