They can operate at high pressures, are easy to clean and can be made of a wide variety of. Mar 18, 2017 micronano heat transfer explores the thermal design fundamentals for microscale heat exchangers and the enhancement heat transfer for applications to heat exchanger design with nanofluids. If you need asme uhx and tema mechanical design calculations, drawings and reports then the compress heat exchanger option is for you. Mod07 lec29 various types of shell and tube heat exchangers. Read online process design of heat exchanger nptel book pdf free download link book now. They will also calculate the number of tubes needed for a shell and tube heat exchanger and to calculate the pipe length needed for a double pipe heat exchanger. Asme uhx and tema heat exchanger software codeware. 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. Such devices for efficient transfer of heat are generally called heat exchanger. Overall heat transfer coefficient in block type heat. Amongst of all type of exchangers, shell and tube exchangers are most commonly used heat exchange equipment.
The thermal capacity of a heat exchanger nntu its ability to transfer heat between two fluids at different temperatures. A procedures manual was created for the doublepipe heat exchanger. 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. Then the next type of heat exchanger or next type of geometry, which we can think of is plate type. Based on chapter 11 in the textbook of cengel and ghajar 4th edition. Heat exchangers 73 individual thermal resistances of the system. Services are provided by customers who buy our equipment and have offices in your local area, or can.
Jul 02, 2014 lecture series on heat and mass transfer by prof. Plate type heat exchangers are not widely used because of the inability to reliably seal the large gaskets between each of the plates. Typical film resistances for shell and tube heat exchangers and overall heat transfer coefficients for air cooled heat exchangers are. The fluids may be separated by a solid wall to prevent mixing or they may be in direct. 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. Dear sirs working on designing reboiler and condenser with graphite block type heat exchanger block type heat exchanger is cross flow heat exchanger.
A heat exchanger is a device used to transfer heat between a solid object and a fluid, or between two or more fluids. Introduction to heat exchangers bengt sunden lund institute of technology. There are many types of heat exchangers applied in the process industry. The most common application of heat transfer is in designing of heat. A heat exchanger is a device that is used to transfer thermal energy enthalpy between. Due to different requirement we have got different construction of heat exchanger. In this case, the two fluids enter the heat exchanger from the same end with a large temperature difference. The term heat exchanger applies to all equipment used to transfer heat between two streams. A heat exchanger is a component that allows the transfer of heat from one fluid liquid or gas to another fluid.
Classification of heat exchangers transfer of heat from one fluid to another is an important operation for most of the chemical industries. Pdhonline course m371 2 pdh shell and tube heat exchangers. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. 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.
Heat exchanger and its types engineering solutions. The exchange can take place between a process stream and a utility stream cold water, pressurized steam, etc, a process stream and a. Dear sirs working on designing reboiler and condenser with graphite block type heat exchanger block type. Qualitative dependence of the fluid temperature on position inside a singlepass heat exchanger is shown in fig. Heat transfer nptel online videos, courses iit video. Download process design of heat exchanger nptel book pdf free download link or read online here in pdf. View notes mod1 from ech 143 at hanoi university of mining and geology. 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. Heat exchangers have widespread industrial and domestic applications. 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. Heat exchangers are normally classified depending on the transfer process occurring in them.
Javier tirenti page 11 an alternative to the fatigue analysis according to the provisions of part 5 div. But nowadays numbers of industries are searching for effective and less time consuming alternatives of designing of shellandtube heat exchangers. Heat exchangers are also abundant in chemical and process industries. Nptel chemical engineering chemical engineering design ii lecture 1. Heat exchangers tube bundle, plate and frame, utube, oil cooled, air cooled, tema, brazed plate, shell and tube, replacement bundles, spiral, cold plate, gas and air available from itt. Heat exchangers fundamentals and design analysis prof. Here, we will cite only those that are immediately useful for design in shell and tube heat exchangers with sensible heat transfer on the shellside. Heat exchanger design handbook pdf alzaytoonah university.
Both horizontal and vertical heat exchangers can be modeled. Shell and tube welcome to this lecture tubular heat exchanger. This heat exchanger tutorial is a guided exercise in creating a templatized heat exchanger including a downtime tracking event frame. Heat exchanger design john richard thome 1er mars 2008 john richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 1 41. In parallel flow heat exchangers, both the tube side fluid and the shell side fluid flow in same direction. The theories of transient heat transfer in doublepipe heat exchangers were explained and followed by literature correlations. It also examines singlephase forced convection correlations as well as flow friction factors for microchannel flows for heat transfer and pumping power.
Bookmark file pdf convective heat and mass transfer kays solution. Plate heat exchangers were first produced in the 1920s and have since been widely used in a great number of sectors a plate exchanger consists of a series. Heat transfer nptel online videos, courses iit video lectures. Conventional exchangers shell and tube have channel size of 10 to 30 mm. Sep, 2019 the latter types are called regenerators, recuperator surface exchangers. Combining each of these resistances in series gives. However, the term is commonly used to equipment in which two process streams exchange heat with each other. Heat exchangers are devices that regulate efficient heat transfer from one fluid to another. Iit, kharagpur, i am one of the instructor of this particular course. Gaitonde, department of mechanical engineering, iit bombay. Details of heat exchanger mechanical design, fabrication, and construction are not wellcovered in this book. In counter flow heat exchangers, the two fluids flow in. They are the most versatile type of heat exchangers. Mar 02, 2019 equations for ntu vary by heat exchanger configuration, but the mathematical relationship for some types of heat exchangers is not readily available or easily derived.
Shell and tube heat exchangers are used extensively throughout the process industry and as such a basic understanding of their design, construction and performance is important to the practising engineer. The design of heat exchangers arturo reyesleon 1, miguel toledo velazquez 1, pedro quintodiez 1, florencio sanchezsilva 1, juan abugaberfrancis 1, celerino resendizrosas 2. 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. Therefore, it can not be classified as a compact heat exchanger. A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. Nptel online videos, courses iit video lectures well organized. Convective heat and mass transfer kays solution manual free. Chapter 5 heat exchangers faculty of engineering and.
Mar, 20 calculates the length of a concentric counterflow heat exchanger using the same parameters as in sizing a heat exchanger. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 21 lecture 1. In terms of performance, they have to ensure maximum heat transfer while keeping size to a minimum. Shellandtube heat exchangers are the most widely used heat exchangers in process industries because of their relatively simple manufacturing and their adaptability to different operating conditions. And there could be different construction gasketed plate heat exchanger, welded plate heat exchanger, brazed plate heat exchanger. Aa, bg, c, d, hp, hr, lc, and tv series 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. Up to eight design conditions can be investigated for fixed, utube, kettle and floating tubesheet style exchangers. Mechanical design standards of shell and tube heat exchangers mechanical design of heat exchangers includes design of various pressure and nonpressure parts. To reduce the temperature of a hot fluid by means of a cooler fluid 3. Indranil ghosh iit kharagpur july 2018 lecture 32 20. General classification of heat exchangers is shown in the figure 1. 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. Regenerative heat exchangers involve the alternate passage of the hot and cold fluid streams.
Boilers and condensers in thermal power plants are the example of large industrial heat exchangers. An excellent, advanced textbook on the thermohydraulic design and performance rating of heat exchangers. Heat exchangers that have straight or ubend tubes can be inspected with our rigid or flexible probe. Equations for ntu vary by heat exchanger configuration, but the mathematical relationship for some types of heat exchangers is not readily available or easily derived. Overall heat transfer coefficient in block type heat exchanger posted in process heat transfer. Likewise heat exchangers are used in almost every industry for heat transfer and heat recovery applications. The performance of a heat exchanger is very important for the conservation of energy, assurance of product quality, process viability and environmental protection. Later, for final design, certain critical services will be checked in detail. Today in the first lecture, i will try to give some background of heat exchangers and some aims.
You might refer to kuppans book or another source for more recommendations on construction and materials selections bottomline. Due to these features, the hisaka plate heat exchangers are highly appreciated in all industries. Up to eight design conditions can be investigated for. This type provides a large heat transfer surface in a small space. Nptel, online courses and certification, learn for free. Summer air conditioning system pdf nptel sante blog. To heat a cooler fluid by means of a hotter fluid 2.
Sep 23, 2018 winter air conditioning system authorstream air conditioning system nptel air conditioning system winter in air conditioning system winter in. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Due to the custom nature of all xchanger heat exchangers, this manual discusses the. Describes how counterflow is different from parallel flow. Handout that help students for design of heat exchangers based on kerns method. Learn for free, pay a small fee for exam and get a certificate. A procedure for use of the equipment and the software was outlined.
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. Warranty and service contact information is also included. Acoustic noise control during operation flow turbulence control during operation pumping power. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 41 lecture 1. Heat exchanger design an overview sciencedirect topics. Heat exchangers study notes for mechanical engineering. Calculate the required heat transfer area based on values needed. And today we will be talking about the shell and tube heat exchangers in details, but before going to that in details we first of all like to solve that incomplete numerical problem that we have taken up in the last class. Nptel provides elearning through online web and video courses various streams. E1mnl032a design and rating of shell and tube heat. Shell and tube heat exchangers page 3 of 30 mnl 032a issued 29 august 08, prepared by j.
So, phe, plate heat exchanger very important kind of heat exchanger. Even for our residential uses we all uses numerous types of heat exchangers like air. 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. Let us say that there will be i mean there we need heat exchange between 2. Plate heat exchanger working principle, how a plate heat. Heat exchanger calculations and design with excel spreadsheet. All books are in clear copy here, and all files are secure so dont worry about it. Heat exchangers are used to transfer heat between two sources. Can be measured by the heattransfer area per unit volume or by channel size. The latter types are called regenerators, recuperator surface exchangers. Design of heat exchangers4 constraints imposed on design of heat exchangers include the following.
1549 724 1388 173 1148 23 1298 351 315 1415 46 1066 511 309 143 1219 1240 330 771 96 26 514 275 669 118 518 925 1497 1326 573 1263 544 761 216 784 240 446 260 310 954 139 637 1326