Shell and tube HE

1. SHELL AND TUBE HEAT EXCHANGER
Presented by
Praveen Kumar( Roll No.T17ME006)
DEPARTMENT OF MECHANICAL ENGINEERING
NATIONAL INSTITUTE OF TECHNOLOGY MEGHALAYA
FEBRUARY 2018
DEPARTMENT OF MECHANICAL ENGINEERING NIT

2. Contents
 What’s a shell and tube heat exchanger ?
 Simple shell and tube heat exchanger
 Components of STHE and it’s type
 Common types of shell and tube heat exchanger
 Why a shell and tube heat exchanger?
 Some picture of HE of different shapes and sizes
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3. 3
 It consists of two main things as it’s name implies
Shell & Tubes.
 The shell is a large vessel with a number of tubes
inside it.
 It classified and constructed in accordance with
widely used TEMA, 1999( 9th edition, 2009) and
other standards and ASME boiler and pressure
vessel codes.
What’s a Shell and Tube Heat
Exchanger ?
DEPARTMENT OF MECHANICAL ENGINEERING NIT

4. 4
 The principle of operation is simple enough: Two
fluids of different temperatures are brought into close
contact but they are not mixing with each other.
 This system designed by 3 letter combination-
• First letter – front end head type(stationary)
• Second letter- shell type
• Third letter- rear end head type
Simple Shell and Tube Heat Exchanger
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5. Simple Shell and Tube Heat Exchanger
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 Some common shell and tube type heat exchangers
are: AES, BEM, AEP, CFU, AKT and AJW
 Class R: for generally severe requirements of
petroleum and related processing application.
 Class C: for commercial and general process
application.
 Class B: for chemical process services.

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DEPARTMENT OF MECHANICAL ENGINEERING NIT
Simple Shell and Tube Heat Exchanger
(http://www.kvastainless.com/heat-exchangers.html)

7. Components of STHE and Type of Front
End
The principal components of
an STHE are:
Shell, shell cover
 Tubes, tubesheet
Baffles and nozzles
Other components include
tie-rods and spacers, pass
partition plates,
impingement plate,
longitudinal baffle, sealing
strips, supports, and
foundation.
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(Ref. TEMA INDIA LTD.)

8. Type of shell and rear end head8
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(Ref. TEMA INDIA LTD.)

9. 9
Types of Baffle Plates : Segmental Cut
Baffles
 The single and double segmental baffles are most
frequently used.
 Optimal baffle spacing is somewhere between 40% -
60% of the shell diameter.
 Baffle cut of 25%-35% is usually recommended.
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(Dr. B. Jayachandriah and V. Vinay kumar, ISSN:0976-1353,vol.13 , March 2015)

10. 10
Types of Baffle Plates
Triple Segmental Baffles
Double Segmental Baffles
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(Dr. B. Jayachandriah and V. Vinay kumar, ISSN:0976-1353,vol.13 , March 2015)

11. 11 Types of Baffle Plates
No. of tubes in window segmental baffle
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(Dr. B. Jayachandriah and V. Vinay kumar, ISSN:0976-1353,vol.13 , March 2015)

12. 12 Types of Baffle Plates
 Disc and ring baffles are composed of
alternating outer rings and inner discs,
which direct the flow radially across the
tube field.
 This baffle type is very effective in
pressure drop to heat transfer conversion.
 In an orifice baffle shell-side-
fluid flows through the clearance
between tube outside diameter
and baffle-hole diameter.
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(Dr. B. Jayachandriah and V. Vinay kumar, ISSN:0976-1353,vol.13 , March 2015)

13. 13 Types of Baffle Plates
Helical baffle shell-and-tube exchanger
Ferhad Tehar Nemati et al., vol. 44(2012) (Dr. B. Jayachandriah and V. Vinay kumar
ISSN:0976-1353, vol.13 , March 2015)
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14. Common Types of Shell and Tube Heat
Exchanger
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15. 15
U-Tube Heat Exchanger
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(http://www.kvastainless.com/heat-exchangers.html)

16. 16
Straight-Tube ( 1-Pass )
(a) Shell-and-tube exchanger (BEM) with one shell pass and one tube pass
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(http://www.kvastainless.com/heat-exchangers.html)

17. 17
Straight-Tube ( 2-Pass )
(b) Shell and-tube exchanger (BEU) with one shell pass and two tube passes.
DEPARTMENT OF MECHANICAL ENGINEERING NIT
(http://www.kvastainless.com/heat-exchangers.html)

18. Why a Shell and Tube Heat Exchanger?
 Shell and tube heat exchangers are the most widespread
and commonly used basic heat exchanger configuration
in the process industries.
 The reasons for this general acceptance are several.
 The shell and tube heat exchanger provides a
comparatively large ratio of heat transfer area to volume
and weight.
 It provides this surface in a form which is relatively easy
to construct in a wide range of sizes.
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19. 19 Some Pictures
on
Shell-Tube Heat Exchanger come with a
different shapes and sizes
 Check this out !!
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DEPARTMENT OF MECHANICAL ENGINEERING NIT
http://www.manninglewis.com/newtechnology.html

21. 21
The university of Texsus at Austin unit operation
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22. 22
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5518 Sq Ft Hughes Anderson Eng. Corp AL-6XN Shell & Tube Heat Exchanger

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DEPARTMENT OF MECHANICAL ENGINEERING NIT
https://www.kelvion.com/products/product/shell-tube-single/

24. References
 Sadik Kakaç & Hongtan Liu (2002). Heat transfer enhancement of heat exchangers Design (2nd
ed.). Series :E applied science vol. 355. CRC Press. ISBN 0-7923-5637-63.
 "PFA Properties" . http://www.fluorotherm.com/. Fluorotherm Polymers, Inc. Retrieved 4 November
2014.
 Design of helical baffle in shell and tube heat exchanger and comparing with segmental baffle using
kern method, Dr. B. Jayachandriah and V. Vinay kumar, International journal of emerging
technology in computer science and electronics(IJETCSE).ISSN:0976-1353 volume 13 issue
2- March 2015.
 Ferhad Tehar Nemati, Kazem Razmi, Reza Tasouji Azar, Sirous Zeyninejad Movassag ,
Baffle space impact on the performance of helical baffle shell and tube heat exchangers, vol.
44, pages 143-149, November 2012.
 http://www.kvastainless.com/heat-exchangers.html
 https://www.kelvion.com/products/product/shell-tube-single/
 http://www.oilngasseparator.info/oil-handling-surfacefacilities/
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25. THANK YOU
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I HOPE THAT YOU ENJOYED WHAT I
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