Mechanical design of heat exchangers and pressure vessel. Final year project report department of mechanical. Process fluid assignments to shell side or tube side. This chapter gives detailed information about compact heat exchanger design, and in particular how the size and shape of the exchanger are affected by the thermal and allowable pressure drop requirements. Thermal and mechanical design of compact heat exchanger. The structural rigidity and adequate service of heat exchanger depends on the proper mechanical design. This thoroughly revised handbook offers comprehensive coverage of singlephase heat exchangers, selection, thermal design, mechanical design, corrosion and fouling, fiv, material selection and their fabrication issues, fabrication of heat exchangers, operation, and maintenance of heat exchangers, all in one volume. The design methods of the parts that could be included in a shell and tube heat exchanger will be described in the following chapters of this document. Bachelor of mechanical engineering faculty of mechanical engineering universiti malaysia pahang.
While this paper will only cover the pche, heatric do manufacture formed plate heat exchangers fphes, and hybrid heat exchangers h. Pitfalls in mechanical design may lead to a variety of operational problems, such as tube. 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. Faculty of mechanical engineering we certify that the project entitled design of small heat exchanger double pipe type is written by mohamad shafiq bin alias. This calculates the required heat transfer surface and pressure drop for the heat exchanger. References material safety data sheets msds are electronically stored and can be. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design parameters which can be summarized as follows. The basic concepts of sizing and design methodologies are provided for compact heat exchangers.
Mechanical design of shell and tube type heat exchanger as. Design considerations for compact heat exchangers david southall, renaud le pierres, and stephen john dewson. If you need asme uhx and tema mechanical design calculations, drawings and reports then the compress heat exchanger option is for you. Most compact heat exchangers are formed of layers of plates or finned channels of fixed length and width.
When the problem is to determine the inlet and outlet temperatures for a particular heat exchanger, the analysis is. Heat exchangers can be classified into four types, according to. Basic design methods of heat exchanger, heat exchangers design, experiment and simulation, s m sohel murshed and manuel matos lopes, intechopen, doi. The general principles of the mechanical design of the following types of exchangers are given in the heat exchanger design handbook 1994, and full descriptions of each, are given under the corresponding entries in this encyclopedia. This paper is different from the other papers on sthex is that here both mechanical design and thermal design is considered including simulation to investigate the heat transfer. Department of mechanical engineering, faculty of engineering and architecture, beykent university, istanbul, turkey.
Petrosync shell and tube heat exchanger mechanical design. Yes, we provide the recommended values for tema design fouling resistances. Shell and tube heat exchangers basic calculations instructor. 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. Department of mechanical engineering me department of electrical engineering communications and computer cce department of civil and infrastructure engineering cie. Heat exchanger design an overview sciencedirect topics. Course overview this fiveday program offers a proper understanding of the asme tema codes and standards, pertaining to mechanical design engineering, maintenance, repair and testing of the shell and tube heat. Xs and will be bound by similar constraints as with the pche fig. Specification of tube parameters size, layout, pitch and material. 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. Impact of mechanical design issues on printed circuit heat.
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. Pdf design of shell and tube heat exchanger single phase. Design and rating of shell and tube heat exchangers page 4 of 30 mnl 032a issued 29 august 08, prepared by j. Types of heat exchangers shell and tube, plate type. Heat exchanger is a process equipment designed for the effective transfer of heat energy between two fluids. The conditions are determined which decide the dimensions and velocities for a heat exchanger. Heat exchangers study notes for mechanical engineering. Bases and application of heat exchanger mechanical design rules in section viii of the asme boiler and pressure vessel code agenda the contents are presented in 9 sessions, tentatively organized as. A heat exchanger can be designed by the lmtd when inlet and out let conditions are specified. Up to eight design conditions can be investigated for.
It is the temperature to be used in the design of the heat exchanger. Heat exchanger design handbook mechanical engineering. Yes, we provide the recommended values for tema design. The free mechanical engineering books in this category are designed to help you prepare for their exams. Purpose and uses of air cooled heat exchangers 2 basic heat transfer principles 3 air cooler components 6 type of aircooled heat exchangers 8 coil or bundle design and construction finned tubes 16 air plenum design 19 air movers types and general laws 21.
However, not every element described herein will be involved in the design of every shell and tube heat exchanger. A heat exchanger is an equipment where heat energy is transferred from a hot fluid to a colder fluid. 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. The term heat exchanger applies to all equipment used to transfer heat between two streams. Selection of heat exchanger tema layout and number of passes. This procedure applies to the pressure containing parts of the exchanger.
Heat transfer september, 2011 investigation of surface. Selection of heat transfer models and fouling coefficients for shell side and tube side. The basic layout for a countercurrent shell and tube heat exchanger together with the associated heat curve for a condensing process generated from chemcad are shown. A design and rating method for shellandtube heat exchangers with helical baffles asme j. Mechanical equipment subjected to higher temperatures. Due to the high heat transfer efficiency of the plates, plate type heat exchangers are usually very small when compared to a tube and shell type heat exchanger with the same heat transfer capacity. High or very low operating pressures and temperatures, combined with sharp temperature gradients, and large differences in the stiffnesses of adjoining parts, are amongst the legion of conditions that behoove the attention of the heat exchanger designer. Purpose establish inspection guidelines to ensure mechanical integrity and continued reliable operation of shell and tube heat exchangers. Thermal and fluid dynamical design is the main and substantial step to heat exchanger design. Same as with the design pressure, this value is defined by the thermal design. This thoroughly revised handbook offers comprehensive coverage of singlephase heat exchangers.
Also, a reference to the economic dimensioning of heat exchangers is presented. Pveng does not provide heat transfer calculations for heat exchanger. Pressure drop constraints related to mechanical and operational cost constraints the maximum pressure drop of oil must be smaller than 80 kpa. Design and demonstrat ion of a heat exchanger for a compact natural gas compressor major qualifying project report submitted to the faculty of worcester polytechnic institute in partial fulfillment of the requirements for the degree of bachelor of science of mechanical. However, the term is commonly used to equipment in which two process streams exchange heat with each other. Bases and heat exchanger rules in section viii of the asme. An exchanger consists of alternating layers of fins separated by parting sheets. The periodic cleaning of heat exchangers and the resulting down time are. He is author of the successful heat exchanger design handbook, first edition published by marceldekker now crc press in 2000. The determination of the optimum heat exchanger design for a specific, well defined application can be regarded as a two stage process. Therein, popular analytical techniques such as log mean temperature difference lmtd and effectivenessnumber of.
Setting shell side and tube side pressure drop design limits. Compare the calculated overall heat transfer coefficient you obtained from the previous step with that you assumed in step 8. Mechanical design is commonly performed according to the design standards and codes. The first stage is concerned with the selection of the most appropriate heat exchanger type, for example, the choice of a shell and tube exchanger as opposed to a plate, rotating wheel, heat pipe, etc. Heat exchangers heat exchangers are used to transfer heat between two sources. The goal of mechanical design is to have a heat exchanger. Design and demonstration of a heat exchanger for a compact. Pdf handout that help students for design of heat exchangers based on kerns method find, read and cite all the research you need on researchgate. Each heat exchanger is a bespoke product, designed by iteration and consultation with customers to provide. Pdf design of shell and tube heat exchanger single. Thulukkanam kuppan works for the indian railway service of mechanical engineers, and is based in chennai, india. Inspection procedure for shell and tube heat exchangers.
For the heat transfer to occur two fluids must be at different temperatures and they must come thermal contact. Lewin department of chemical engineering technion, haifa, israel. The two most common heat exchanger design problems are those of rating and sizing. 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 edit.
Examples are water cooling towers and jet condensers in. Is there a database or recommendations for the fouling factors. The design of sthe includes thermal design and mechanical design. The thermal design of sthe involves evaluation of required effective surface area i. Pdhonline course m371 2 pdh shell and tube heat exchangers. Setting upper and lower design limits on tube length. Shell and tube heat exchangers page 6 of 30 mnl 032a issued 29 august 08, prepared by j. Lewin heat exchanger design 054410 plant design lecture 7. Read download mechanical design of heat exchangers pdf pdf. Jul 01, 2016 heat can flow only from hotter to cooler fluids, as per the second law of thermodynamics. Based on information provided in chapters 4 and 5, the procedure for sizing, thermal design, pressure drop calculations and mechanical design of compact heat exchangers is provided in detail in this chapter. Design and development of shell and tube heat exchanger. This thoroughly revised handbook offers comprehensive coverage of singlephase heat exchangers, selection, thermal design, mechanical design, corrosion and fouling, fiv, material selection and their fabrication issues, fabrication of heat exchangers, operation, and maintenance of heat. The transfer of heat energy between the two fluids could be carried out.
Heat exchange involve convection in each fluid and conduction through the separating wall. 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. This is due to the larger area the plates provide over tubes. With the exception of the fluid inlets and outlets, the edges of each layer are sealed with side bars which give the unit mechanical.
Specifying shellandtube heat exchangers understand what heat exchanger design specialists need to know and remember, you know your process best asif raza shellandtube heat exchangers are one. E1mnl032a design and rating of shell and tube heat. Mayank joshi, mechanical engineering, tulas institute of technology, dehradun,india. Pressure drop constraints related to mechanical and operational cost constraints the maximum pressure drop of oil must be smaller. Up to eight design conditions can be investigated for fixed, utube, kettle and floating tubesheet style exchangers.
The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interact. This procedure applies to the pressure containing parts of the exchanger alone with supporting structures. Tube heat exchangers general heat exchanger design 1. Heat exchangers are used to transfer heat from one fluid to another. Kuppan is a noted authority in the area of heat exchangers, pressure vessels, and railway technologies.187 1312 960 542 717 1244 174 401 176 894 871 996 439 1472 1250 11 225 437 915 679 444 524 1486 844 84 1010 1381 84 671 189 176 1377 104 871 534 202 1153