To heat a cooler fluid by means of a hotter fluid 2. 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. Nptel chemical engineering chemical engineering design ii lecture 1. Plate type heat exchangers are not widely used because of the inability to reliably seal the large gaskets between each of the plates.
A procedure for use of the equipment and the software was outlined. 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 john richard thome 1er mars 2008 john richard thome ltcm sgm epfl heat transfer heat exchanger design 1er mars 2008 1 41. Overall heat transfer coefficient in block type heat exchanger posted in process heat transfer. A heat exchanger is a component that allows the transfer of heat from one fluid liquid or gas to another fluid. In parallel flow heat exchangers, both the tube side fluid and the shell side fluid flow in same direction. 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. 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. Likewise heat exchangers are used in almost every industry for heat transfer and heat recovery applications. In this case, the two fluids enter the heat exchanger from the same end with a large temperature difference. Heat exchanger calculations and design with excel spreadsheet. Services are provided by customers who buy our equipment and have offices in your local area, or can. The term heat exchanger applies to all equipment used to transfer heat between two streams.
Due to these features, the hisaka plate heat exchangers are highly appreciated in all industries. Amongst of all type of exchangers, shell and tube exchangers are most commonly used heat exchange equipment. Therefore, it can not be classified as a compact heat exchanger. Introduction to heat exchangers bengt sunden lund institute of technology. Heat exchangers have widespread industrial and domestic applications. 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. Heat exchangers are used to transfer heat between two sources. There are many types of heat exchangers applied in the process industry. Summer air conditioning system pdf nptel sante blog. Warranty and service contact information is also included. Asme uhx and tema heat exchanger software codeware. To reduce the temperature of a hot fluid by means of a cooler fluid 3. Then the next type of heat exchanger or next type of geometry, which we can think of is plate type. 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.
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. An excellent, advanced textbook on the thermohydraulic design and performance rating of heat exchangers. A heat exchanger is a heat transfer device that exchanges heat between two or more process fluids. Pdhonline course m371 2 pdh shell and tube heat exchangers.
Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 21 lecture 1. Later, for final design, certain critical services will be checked in detail. Heat exchangers are normally classified depending on the transfer process occurring in them. The exchange can take place between a process stream and a utility stream cold water, pressurized steam, etc, a process stream and a.
It also examines singlephase forced convection correlations as well as flow friction factors for microchannel flows for heat transfer and pumping power. Heat transfer nptel online videos, courses iit video. 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. Sep, 2019 the latter types are called regenerators, recuperator surface exchangers. 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. The latter types are called regenerators, recuperator surface exchangers.
However, the term is commonly used to equipment in which two process streams exchange heat with each other. 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. A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. This type provides a large heat transfer surface in a small space. 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. E1mnl032a design and rating of shell and tube heat. Dear sirs working on designing reboiler and condenser with graphite block type heat exchanger block type. The thermal capacity of a heat exchanger nntu its ability to transfer heat between two fluids at different temperatures.
Heat exchangers that have straight or ubend tubes can be inspected with our rigid or flexible probe. Regenerative heat exchangers involve the alternate passage of the hot and cold fluid streams. Shell and tube welcome to this lecture tubular heat exchanger. 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. Heat exchanger and its types engineering solutions. Nptel provides elearning through online web and video courses various streams.
So, phe, plate heat exchanger very important kind of heat exchanger. Shell and tube heat exchangers page 3 of 30 mnl 032a issued 29 august 08, prepared by j. The fluids may be separated by a solid wall to prevent mixing or they may be in direct. General classification of heat exchangers is shown in the figure 1.
In terms of performance, they have to ensure maximum heat transfer while keeping size to a minimum. 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. But nowadays numbers of industries are searching for effective and less time consuming alternatives of designing of shellandtube heat exchangers. Can be measured by the heattransfer area per unit volume or by channel size. Even for our residential uses we all uses numerous types of heat exchangers like air. Today in the first lecture, i will try to give some background of heat exchangers and some aims. Iit, kharagpur, i am one of the instructor of this particular course. Heat exchangers are devices that regulate efficient heat transfer from one fluid to another. 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.
Up to eight design conditions can be investigated for. Nptel, online courses and certification, learn for free. Shell and tube heat exchanger shell and tube heat exhangers are one of the most common heat exchange equipment found in all plants. Both horizontal and vertical heat exchangers can be modeled. Heat exchangers study notes for mechanical engineering. Nptel chemical engineering chemical engineering design ii joint initiative of iits and iisc funded by mhrd page 2 of 41 lecture 1.
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. Handout that help students for design of heat exchangers based on kerns method. The most common application of heat transfer is in designing of heat. In counter flow heat exchangers, the two fluids flow in. Learn for free, pay a small fee for exam and get a certificate. Conventional exchangers shell and tube have channel size of 10 to 30 mm. If you need asme uhx and tema mechanical design calculations, drawings and reports then the compress heat exchanger option is for you. Heat exchanger design handbook pdf alzaytoonah university. 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. Details of heat exchanger mechanical design, fabrication, and construction are not wellcovered in this book. Download the excel spreadsheet templates in this article to make preliminary heat exchanger design calculations. Let us say that there will be i mean there we need heat exchange between 2. They can operate at high pressures, are easy to clean and can be made of a wide variety of. Due to the custom nature of all xchanger heat exchangers, this manual discusses the.
You might refer to kuppans book or another source for more recommendations on construction and materials selections bottomline. Indranil ghosh iit kharagpur july 2018 lecture 32 20. Qualitative dependence of the fluid temperature on position inside a singlepass heat exchanger is shown in fig. Javier tirenti page 11 an alternative to the fatigue analysis according to the provisions of part 5 div. 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. Overall heat transfer coefficient in block type heat. Describes how counterflow is different from parallel flow. Mod07 lec29 various types of shell and tube heat exchangers. A heat exchanger is a device that is used to transfer thermal energy enthalpy between. All books are in clear copy here, and all files are secure so dont worry about it. Calculate the required heat transfer area based on values needed.
Acoustic noise control during operation flow turbulence control during operation pumping power. Heat exchanger design an overview sciencedirect topics. Such devices for efficient transfer of heat are generally called heat exchanger. 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. Combining each of these resistances in series gives.
Heat transfer nptel online videos, courses iit video lectures. Plate heat exchanger working principle, how a plate heat. 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. Bookmark file pdf convective heat and mass transfer kays solution. The theories of transient heat transfer in doublepipe heat exchangers were explained and followed by literature correlations. And there could be different construction gasketed plate heat exchanger, welded plate heat exchanger, brazed plate heat exchanger. A procedures manual was created for the doublepipe heat exchanger. The design of heat exchangers arturo reyesleon 1, miguel toledo velazquez 1, pedro quintodiez 1, florencio sanchezsilva 1, juan abugaberfrancis 1, celerino resendizrosas 2.
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 heat exchanger is a device used to transfer heat between a solid object and a fluid, or between two or more fluids. 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. Mar, 20 calculates the length of a concentric counterflow heat exchanger using the same parameters as in sizing a heat exchanger. Due to different requirement we have got different construction of heat exchanger. 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. Typical film resistances for shell and tube heat exchangers and overall heat transfer coefficients for air cooled heat exchangers are. Convective heat and mass transfer kays solution manual free. Read online process design of heat exchanger nptel book pdf free download link book now. Aa, bg, c, d, hp, hr, lc, and tv series heat exchangers. View notes mod1 from ech 143 at hanoi university of mining and geology. Sep 23, 2018 winter air conditioning system authorstream air conditioning system nptel air conditioning system winter in air conditioning system winter in.
This heat exchanger tutorial is a guided exercise in creating a templatized heat exchanger including a downtime tracking event frame. Nptel online videos, courses iit video lectures well organized. The performance of a heat exchanger is very important for the conservation of energy, assurance of product quality, process viability and environmental protection. Boilers and condensers in thermal power plants are the example of large industrial heat exchangers. Heat exchangers fundamentals and design analysis prof.
Design of heat exchangers4 constraints imposed on design of heat exchangers include the following. Download process design of heat exchanger nptel book pdf free download link or read online here in pdf. Gaitonde, department of mechanical engineering, iit bombay. Classification of heat exchangers transfer of heat from one fluid to another is an important operation for most of the chemical industries. Heat exchangers 73 individual thermal resistances of the system. Jul 02, 2014 lecture series on heat and mass transfer by prof. Dear sirs working on designing reboiler and condenser with graphite block type heat exchanger block type heat exchanger is cross flow heat exchanger. They are the most versatile type of heat exchangers.
1183 78 1159 157 367 1443 1066 407 1098 1504 486 548 299 898 1309 1385 299 4 1252 1453 774 752 49 1596 1500 705 984 863 795 520 918 974