Practical Thermal Design Of Shell And Tube Heat Exchangers By Rajiv Mukherjee Pdf

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The majority of mechanical equipment found in oil and gas facilities belongs to the static equipment group, which comprises pressure vessels drums, columns, reactors, filters and heat exchangers shell and tubes, plate and frame, air coolers. Its goal was to enable the project engineer, who is not an equipment specialist, to check that economical choices are made across all involved disciplines. This article has the same goal for heat exchangers: to make sure that across all disciplines involved—process, heat exchange, and mechanical—the most cost-effective choices are made.

Effectively design shell-and-tube heat exchangers

Views 54 Downloads 0 File size 5MB. He has 36 years of experience in the thermal design, revamping, and troubleshooting of aircooled and shell-and-tube heat exchangers, and considerable experience in the design of heat exchanger networks. He has written several articles in reputed journals and presented many papers at technical symposia. Rajiv has also served as faculty for numerous courses on heat exchanger design and operation, energy conservation, and heat exchanger networks, and presently teaches an intensive in-house refresher course on the design and operation of heat exchangers that can be offered at any plant site or office location around the world.

He is an honors graduate in chemical engineering from Jadavpur University, Kolkata, India. In his spare time, Rajiv enjoys reading Swami Vivekananda and Kahlil Gibran are big favorites , writing, and listening to music. He lives in New Delhi with his wife, Kalpana. Recent heat exchanger design literature has been predominantly occupied by proceedings of conferences.

There is no book in the market that explains the logic of heat exchanger thermal design and gives practical suggestions and recommendations for actually designing industrial heat exchangers. So, having written my earlier book, Practical Thermal Design of Shell-and-Tube Heat Exchangers, which received a fairly good response, I decided to write a sequel—one on air-cooled heat exchangers. The theoretical aspects of single-phase heat transfer and condensation have been very well presented in several books.

The thousands of air-cooled heat exchanger designs that I have been associated with over the last three decades have provided numerous examples. They say that one picture is more eloquent than a thousand words. If you extend this logic, one appropriate illustration by a case study is eminently more didactic than a long dissertation on a particular subject.

This book has been written in the same style, language, and format as the one on shelland-tube heat exchangers. For the sake of convenience, both English and metric units have been used throughout the book. There are 26 case studies, all aimed at embellishing, illustrating, reinforcing, or demonstrating a feature, rationale, or methodology of design elaborated or advocated in the text.

Not only are the case studies based on the HTRI software, the entire book is founded on the platform of HTRI know-how, which has become a way of life for me for almost three decades. For example, why does a light hydrocarbon condenser tend to have only four rows of tubes, whereas a heavy hydrocarbon liquid cooler tends to have more rows of tubes?

And many, many others. This book has been written primarily for the heat exchanger thermal designer. However, I think it will also be useful to process engineers, a significant part of whose routine job is to specify heat exchangers. This book has not been written in an esoteric style for this very reason.

Since operating aspects are also often discussed, I trust it will be of interest to plant operation specialists as well.

It is my fond hope that even B. I still remember when I was an undergraduate student—I used to long for more practical, real-life information about industrial practice.

If one considers that many engineering graduates end up working in the chemical process industries, there may be a lot of merit in adding such a flavor to heat transfer in the university curriculum, as indeed it is to all other fields of human learning.

The juxtaposition of industrial equipment design practice with basic theory will go a long way in making the subject more interesting and meaningful. The thermal design of air-cooled heat exchangers is a fascinating activity—sometimes even more so than that of shell-and-tube heat exchangers—for the simple reason that there are more variables: even the coolant air flow rate is a variable! This book will have served its purpose if it can inspire the reader to consider the thermal design of air-cooled heat exchangers as a joyous activity rather than a mundane chore.

And that is an understatement. To my dear wife, Kalpana, who has been supporting and inspiring me for over three decades now; to our daughter, Shilpi, our son -in-law , Bappa, and their sons Sohum and Shivum; but most importantly, it is dedicated to the reader, whose approbation and appreciation would make all the toil worthwhile.

I am also indebted to all those from whom I learned the design of air-cooled heat exchangers over the years, especially to Wim Bos and Peter van der Broek of Lummus Nederland B.

I will always be grateful to Cindy Mascone, ex-technical editor at Chemical Engineering Progress, and her one-time compatriot, Gail Nalven, who led me to believe that I could write a book. This book might not have been possible without the wonderful exposition of air-cooled heat exchanger technology by Heat Transfer Research, Inc. My long experience in the field of air-cooled heat exchangers has been very largely honed on the platform of HTRI, whose software I have been using since These have been duly acknowledged where they appear.

I am indebted to Bill Begell who decided to publish this book, and to all the people at Begell House who were responsible for its production. Special thanks go to Donna Thompson who did a splendid job of copyediting this book, as she did with the previous one on shell-and-tube heat exchangers. Donna, I have enjoyed working with you again. It was he who led me to Bill in the first place.

I am thankful to Geoff Hewitt, who is the editor of the present series of books, for having readily accepted this book into his fold. Thanks are also due to my wonderful friend Sam Chapple of Edmonton, Canada, who guided me on some important issues in the text.

I must also express my gratitude to another good friend, Lalit Shingal, who helped me with the reproduction of many diagrams that appear in the book. This book is therefore truly a collaborative effort, and the credit belongs to the human fraternity at large, rather than to any individual. This is attributable to the much lower cost of cooling by water, thanks to its substantially higher thermal conductivity and lower temperature.

However, with increasing shortages of cooling water and a consequent increase in its cost, air cooling has become more and more popular. The first cost of an ACHE is much greater than that of a water-cooled heat exchanger for the same heat duty, but its operating cost is usually much less.

The operating cost with water cooling comprises the cost of the initial raw water itself, makeup water, treatment chemicals, apportioned cost of the cooling tower, and of course the pumping cost. For aircooled heat exchangers, the operating cost is only the cost of the power required to make the air flow across the tube bundles. Thus, on an overall cost basis, ACHEs often compare quite favorably with water-cooled heat exchangers.

The design of ACHEs comprises two distinct activities, namely, thermal design and mechanical design. In thermal design the basic sizing of the heat exchanger is accomplished, whereas in mechanical design the thicknesses and precise dimensions of the various components are determined and a bill of materials is produced.

Detailed engineering drawings are then prepared based on which actual fabrication drawings are made. In this book, as the title suggests, we shall talk principally about thermal design. A proper and sound understanding of the fundamental principles and interplay of parameters is essential in order to produce an optimum design.

The principal purpose of writing this book is to help the heat exchanger thermal designer attain such an understanding. This book has been written in a structured, logical, and didactic manner, and special effort has been made at bringing out the interplay of parameters for a thorough understanding of basic issues. The reader is invited to run these examples with further variations in the parameters being examined, in order to develop a comprehensive understanding.

This is really quite surprising, considering that thermal design of ACHEs is simpler and more straightforward than that of shell-and-tube heat exchangers! This book will have served its purpose if it encourages more companies to overcome this diffidence and take up the thermal design of ACHEs.

Now, coming to the individual chapters themselves, Chapter 2 dwells on the advantages and disadvantages of air cooling, while Chapter 3 discusses the optimization of air and water cooling. In some instances, only cooling by air need be employed, whereas in others only cooling by water is adequate. However, in the vast majority of cases that fall between these two extremes, cooling by both air and water is favorable.

Chapter 4 gives a detailed rundown of the various components and constructional features of ACHEs, since a good understanding of the same is vital to the thermal design of this equipment. This chapter will also be of considerable interest to mechanical designers of ACHEs, since it explains the implications of several constructional features on thermal design.

Chapter 5 discusses various basic concepts that form much of the foundation of knowledge for ACHE design. The simultaneous optimization of airside and tubeside calculations is certainly not an easy task. However, with the help of logical explanations, arguments, and case studies, the design methodology is made easy to understand and apply. Chapter 6 is on the thermal design of condensing ACHEs. After a brief classification of condensers and a brief account of the mechanisms of condensation, practical guidelines for thermal design are discussed.

These include isothermal, narrow-range and wide-range condensation, the effect of pressure, the handling of desuperheating and subcooling, nozzle sizing, and the handling of condensing profiles and physical property profiles. In Chapter 8, physical properties and heat release profiles are discusses at length. The reader is offered guidance on how to feed heat release profiles, a matter that is not as simple as it may appear. Chapter 9 explains why overdesign is provided, and elaborates on the modalities of overdesign for single-phase and condensing services.

After reviewing the various categories of fouling and the parameters that affect it, suggestions are offered in Chapter 10 on how to specify fouling resistance. Comprehensive guidelines are then suggested and analyzed in order to minimize fouling.

Chapter 11 is on the control of ACHEs, where various methods of control are discussed in detail. Unlike water-cooled shell-and-tube heat exchangers, ACHEs offer very good control on the process. Chapter 12 deals with operating problems in air-cooled heat exchangers.

Various potential problems and ways to avoid them are discussed for both the tubeside and the airside cases. In Chapter 13, many special applications are elaborated on, including combined services, recirculation ACHEs, humidified ACHEs, tube inserts, variable finning density, natural convection, and vacuum steam condensers.

We have already discussed the cost advantage of air cooling over water cooling. Besides this advantage, the use of air as a cooling medium eliminates certain inherent disadvantages associated with water cooling: a The location of the cooler and thereby a plant is independent of a source of water supply such as a river or a lake, or even a sea; hence, the plant can be located in any geographic area.

To use water as a cooling medium, however, the plant has to be located at a site close to a large natural body of water such as a lake, river, or sea. This could very easily entail a penalty in terms of transportation of raw materials or finished products. In once-through cooling water, such as with sea water, warmer water is returned to the body from which the water is drawn, thereby leading to a rise in temperature of that body of water. This has a direct adverse effect on the life and longevity of the aquatic plant and animal species inhabiting the body of water.

In recirculating cooling water systems which are the norm , the outlet warm water is cooled by a cooling tower so as to eliminate this increase in temperature of the discharge water with its associated adverse effect on aquatic life. Another advantage with air coolers is that they continue to operate although at a reduced capacity by natural convection even when there is a power failure.

In the case of water cooling, however, a power outage usually means a plant shutdown, which results in direct loss in production. On the other hand, water cooling does not render an effective means of control of the process fluid outlet temperature and thereby the heat duty. This is because of two reasons: a the MTD is predominantly controlled by the cold end temperature difference which does not change with a reduction in the cooling water flow rate and b the cooling water film resistance is a very small percentage of the overall resistance to heat transfer.

Consequently, a reduction in the cooling water flow rate has a negligible effect on the performance of a water-cooled cooler. In an air-cooled heat exchanger, however, a reduction in the air flow rate has a much more pronounced effect on the performance of the cooler because both the MTD and the overall heat transfer coefficient change significantly.

This is because the airside heat transfer coefficient controls the overall heat transfer resistance quite strongly, and the MTD also varies significantly with a change in the air flow rate, and thereby the outlet air temperature. This is illustrated in the following case study. The allowable pressure drop of hot water is 10 psi 0. The air-cooled heat exchanger design was prepared first and its principal construction parameters are indicated in Table 2.

Practical Thermal Design of Shell-And-Tube Heat Exchangers

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Practical Thermal Design of Shell-and-Tube Heat Exchangers

Practical Thermal Design of Shell-and-Tube Heat Exchangers is a truly practical book with no less than 35 detailed case studies that serve to illustrate concepts, relate different topics and introduce applications. Thermal designers of shell-and-tube heat exchangers STHE will find the book indispensable for understanding the mechanics of thermal-hydraulics in STHE's and thereby for utilizing commercially available software packages to produce optimum designs. The book explains the interplay of parameters and unravels many mysteries, converting the design activity from a mundane chore to a matter of joy. The book will be vital for operating plant engineers. Students and teachers of undergraduate and graduate courses in unfired vessel heat transfer will find this book essential for a good understanding of practical design of industrial STHE's.

Practical Thermal Design of Shell-and-Tube Heat Exchangers is a truly practical book with no less than 35 detailed case studies that serve to illustrate concepts, relate different topics and introduce applications. Thermal designers of shell-and-tube heat exchangers STHE will find the book indispensable for understanding the mechanics of thermal-hydraulics in STHE's and thereby for utilizing commercially available software packages to produce optimum designs. The book explains the interplay of parameters and unravels many mysteries, converting the design activity from a mundane chore to a matter of joy. The book will be vital for operating plant engineers. Students and teachers of undergraduate and graduate courses in unfired vessel heat transfer will find this book essential for a good understanding of practical design of industrial STHE's.

Skip to search form Skip to main content You are currently offline. Some features of the site may not work correctly. Thermal design of shell-and-tube heat exchangers STHEs is done by sophisticated computer software.

Mukherjee rajiv.

Practical Thermal Design of Shell-And-tube Heat Exchangers

Все повернули головы к Сьюзан Флетчер, которая выпрямилась и поднялась со стула. Лицо ее побелело, глаза не отрываясь смотрели на застывший кадр, демонстрировавший неподвижное тело Дэвида Беккера, залитое кровью, брошенное на пол мини-автобуса. - Вы его убили! - крикнула.  - Вы его убили! - Она бросилась к экрану, протянула к нему руки.  - Дэвид… Все пришли в смятение.

Оба замолчали. Сьюзан глубоко дышала, словно пытаясь вобрать в себя ужасную правду. Энсей Танкадо создал не поддающийся взлому код. Он держит нас в заложниках. Внезапно она встала. В голосе ее прозвучала удивительная решимость: - Мы должны установить с ним контакт.

Джабба нахмурился. - Мы это уже обсудили. Забыла. - Там проблема с электричеством. - Я не электрик.

Practical Thermal Design of Shell-and-Tube Heat Exchangers. Rajiv Mukherjee Heat and Mass Transfer Department Engineers India Limited, New Delhi, India.

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 Пусти меня, - сказала Сьюзан, стараясь говорить как можно спокойнее. Внезапно ее охватило ощущение опасности. - Ну, давай же, - настаивал Хейл.  - Стратмор практически выгнал Чатрукьяна за то, что тот скрупулезно выполняет свои обязанности. Что случилось с ТРАНСТЕКСТОМ. Не бывает такой диагностики, которая длилась бы восемнадцать часов. Все это вранье, и ты это отлично знаешь.

 Вы полагаете, что Танкадо хотел остановить червя. Вы думаете, он, умирая, до последний секунды переживал за несчастное АНБ. - Распадается туннельный блок! - послышался возглас одного из техников.  - Полная незащищенность наступит максимум через пятнадцать минут. - Вот что я вам скажу, - решительно заявил директор.

Practical Thermal Design of Shell-and-Tube Heat Exchangers

Беккер открыл конверт и увидел толстую пачку красноватых банкнот. - Что. - Местная валюта, - безучастно сказал пилот. - Я понимаю.

 Так ты со мной, Сьюзан? - спросил. Сьюзан улыбнулась: - Да, сэр. На сто процентов.

Ярко освещенное помещение аэровокзала сияло стерильной чистотой. Здесь не было ни души, если не считать уборщицы, драившей пол. На противоположной стороне зала служащая закрывала билетную кассу компании Иберия эйр-лайнз. Беккеру это показалось дурным предзнаменованием. Он подбежал к кассе.

Shell & Tube Type Heat Exchangers: An Overview

 Данные? - спросил Бринкерхофф.

 О Боже! - воскликнул.  - Что случилось. ГЛАВА 93 Причастие. Халохот сразу же увидел Беккера: нельзя было не заметить пиджак защитного цвета да еще с кровавым пятном на боку. Светлый силуэт двигался по центральному проходу среди моря черных одежд.

Она попыталась собраться с мыслями, но они упрямо возвращали ее к. Дэвид Беккер. Единственный мужчина, которого она любила. Самый молодой профессор Джорджтаунского университета, блестящий ученый-лингвист, он пользовался всеобщим признанием в академическом мире.

Внезапно в гимнастическом зале, превращенном в больничную палату, повисла тишина. Старик внимательно разглядывал подозрительного посетителя. Беккер перешел чуть ли не на шепот: - Я здесь, чтобы узнать, не нужно ли вам чего-нибудь.

3 Response
  1. Joddy4321

    Practical Thermal Design of Shell-And-tube Heat Exchangers - Free ebook download as PDF File .pdf), Text File .txt) or read book online for free. rajiv.​ Library of Congress Cataloging-in-Publication.

  2. Talon D.

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