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