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Heat Exchangers
Published in Siddhartha Mukherjee, Process Engineering and Plant Design, 2021
Components of Shell-and-Tube Heat Exchangers: The main components of a typical shell-and-tube heat exchanger are covered by the following:Shells and Shell CoversChannels and Channel CoversTubes and TubesheetsBafflesNozzlesThere are, however, several other components including impingement plates, pass partition plates, longitudinal baffles, tie rods, spacers, sealing strips, supports and foundation [1, 2].
Heat Exchangers
Published in Greg F. Naterer, Advanced Heat Transfer, 2018
A shell-and-tube heat exchanger consists of an outer shell pipe where fluid enters through one end, passes across internal tubes carrying a fluid at a different temperature, and exits through the other end. A shell-and-tube heat exchanger with one shell and one tube pass is illustrated in Figure 9.2 and a configuration with one shell and two tube passes is shown in Figure 9.3. Baffles are usually placed perpendicular to the inner tubes to enhance mixing and turbulence of the outer fluid stream. Baffles are perforated plates that obstruct some region of the outer flow while directing the inner flow around the remaining uncovered sections. A common example of a shell-and-tube heat exchanger is a condenser. The outer flow is steam that condenses and leaves as water while transferring heat to the inner tubes carrying cold water.
Applications
Published in Raj P. Chhabra, CRC Handbook of Thermal Engineering Second Edition, 2017
Joshua D. Ramsey, Ken Bell, Ramesh K. Shah, Bengt Sundén, Zan Wu, Clement Kleinstreuer, Zelin Xu, D. Ian Wilson, Graham T. Polley, John A. Pearce, Kenneth R. Diller, Jonathan W. Valvano, David W. Yarbrough, Moncef Krarti, John Zhai, Jan Kośny, Christian K. Bach, Ian H. Bell, Craig R. Bradshaw, Eckhard A. Groll, Abhinav Krishna, Orkan Kurtulus, Margaret M. Mathison, Bryce Shaffer, Bin Yang, Xinye Zhang, Davide Ziviani, Robert F. Boehm, Anthony F. Mills, Santanu Bandyopadhyay, Shankar Narasimhan, Donald L. Fenton, Raj M. Manglik, Sameer Khandekar, Mario F. Trujillo, Rolf D. Reitz, Milind A. Jog, Prabhat Kumar, K.P. Sandeep, Sanjiv Sinha, Krishna Valavala, Jun Ma, Pradeep Lall, Harold R. Jacobs, Mangesh Chaudhari, Amit Agrawal, Robert J. Moffat, Tadhg O’Donovan, Jungho Kim, S.A. Sherif, Alan T. McDonald, Arturo Pacheco-Vega, Gerardo Diaz, Mihir Sen, K.T. Yang, Martine Rueff, Evelyne Mauret, Pawel Wawrzyniak, Ireneusz Zbicinski, Mariia Sobulska, P.S. Ghoshdastidar, Naveen Tiwari, Rajappa Tadepalli, Raj Ganesh S. Pala, Desh Bandhu Singh, G. N. Tiwari
A shell-and-tube heat exchanger is essentially a bundle of tubes enclosed in a shell and so arranged that one fluid flows through the tubes and another fluid flows across the outside of the tubes, heat being transferred from one fluid to the other through the tube wall. A number of other mechanical components are required to guide the fluids into, through, and out of the exchanger, to prevent the fluids from mixing, and to ensure the mechanical integrity of the heat exchanger. A typical shell-and-tube heat exchanger is shown in Figure 4.1.5 (TEMA 2007), but the basic design allows many modifications and special features, some of which are described later.
Shell-and-Tube Heat Exchanger Geometry Modification: An Efficient Way to Mitigate Fouling
Published in Heat Transfer Engineering, 2020
Anthony Chambon, Zoé Anxionnaz-Minvielle, Grégory Cwicklinski, Nathalie Guintrand, Aline Buffet, Bernard Vinet
Shell-and-tube heat exchangers are commonly set up in hydrocarbon services since it is perceived in industry as a safer option [1]. Nevertheless, fouling of other heat exchanger technologies has also been investigated so far. Compact and spiral heat exchangers successfully mitigate fouling [8,9] by providing higher shear stress at a given flowrate. Shell-and-tube heat exchanger geometry modification (helical baffle, EM-Baffle or twisted tubes) can also help to mitigate fouling but improvement is limited to the shell-side where dead zones are suppressed [10,11].