scholarly journals Numerical Simulation of the Shell-and-Tube Heat Exchanger: Influence of the Lower Flows and the Baffles on a Fluid Dynamics

2017 ◽  
Vol 07 (04) ◽  
pp. 349-361 ◽  
Author(s):  
Sebastião José dos Santos Filho ◽  
Josedite Saraiva de Souza ◽  
Antonio Gilson Barbosa de Lima
Keyword(s):  
Fluid Dynamics ◽  
Numerical Simulation ◽  
Heat Exchanger ◽  
Tube Heat Exchanger ◽  
Shell And Tube

scholarly journals Numerical Simulation of Shell and Tube Heat Exchanger by using CFD

IARJSET ◽  
2017 ◽  
Vol 4 (1) ◽  
pp. 105-110
Author(s):  
Yadav G A ◽  
Janugade S V ◽  
Patil M R
Keyword(s):  
Numerical Simulation ◽  
Heat Exchanger ◽  
Tube Heat Exchanger ◽  
Shell And Tube

scholarly journals STUDI EKPERIMENTAL DAN SIMULASI PENGARUH SUDUT DOUBLE SEGMENTAL BAFFLE DAN LAJU ALIRAN MASSA FLUIDA PADA HEAT EXCHANGER TYPE SHELL AND TUBE TERHADAP PERPINDAHAN PANAS

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Muhammad Syafi’i ◽  
Tabah Priangkoso ◽  
Darmanto Darmanto
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Heat Exchanger ◽  
Tube Heat Exchanger ◽  
Shell And Tube

Shell and tube heat exchanger (STHX) merupakan jenis penukar kalor yang banyak digunakan di industri. Namun, peningkatan performa penukar kalor ini perlu dilakukan dengan cermat karena alirannya yang kompleks di dalam shell. Shell-and-Tube Heat Exchanger berfungsi untuk menukar energi dalam bentuk panas antara fluida yang berbeda Temperature yang dapat terjadi melalui kontak langsung maupun tidak langsung. Fluida yang bertukar energi dapat berupa energi yang fasenya sama (cair ke cair atau gas ke gas) atau dua fluida yang berbeda fasenya. Penelitian ini mengkaji peningkatan performa dalam bentuk koefisien perpindahan panas total dan efektivitas dengan melakukan variasi sudut baffle menggunakan pendekatan eksperimen. Penukar kalor diuji pada laju aliran massa 0,5; 1; 1,5; dan 2 kg/s dengan variasi sudut baffle 0°, 10°, dan 20°. Pada pengujian eksperimen maupun simulasi semakin kecil sudut baffle maka semakin besar nilai efektivitasnya dan semakin besar laju aliran massa maka semakin besar pula nilai koefisien perpindahan panas totalnya. Pada pengujian simulasi nilai efektivitas dengan sudut baffle 0° memiliki nilai maksimal 1,82% dengan nilai koefisien perpindahan panas total 1607 W/m².K, 10° memiliki nilai 1,79% dengan nilai koefisien perpindahan panas total 1581 W/m².K, dan 20° memiliki nilai 1,70% dengan nilai koefisien perpindahan panas total 1460 W/m².K, nilai efektivitas pada pengujian eksperimen dengan sudut baffle 0° memiliki nilai maksimal 1,38% dengan nilai koefisien perpindahan panas total 741,54 W/m².K, 10° memiliki nilai 1,29% dengan nilai koefisien perpindahan panas total 740,56 W/m².K, dan 20° memiliki nilai 1,14% dengan nilai koefisien perpindahan panas total 739,21 W/m².K. Kata Kunci: Computational Fluid Dynamics, double segmental baffle, STHX, sudut baffle

Investigation of a Chronic Leaking Problem of a Heat Exchanger Girth Flange

2015 ◽  
Author(s):  
Gys van Zyl
Keyword(s):  
Numerical Simulation ◽  
Heat Exchanger ◽  
Thermal Conditions ◽  
Phase Changes ◽  
Thermal Gradients ◽  
Simulation Studies ◽  
Tube Sheet ◽  
Tube Heat Exchanger ◽  
Standard Design ◽  
Shell And Tube

A shell-and-tube heat exchanger experiences frequent leaks from the gasket between the shell girth flange and tube sheet. The leaks manifest during start-up of the equipment and have traditionally been arrested by assembly retorque. An investigation was launched to understand the cause of recurring leaks and propose measures to eliminate the problem. A standard design review using the ASME BPVC [1] rules for bolted flanges found no concern with the design of the flanges. More detailed numerical simulation studies were performed that considered thermal conditions in addition to mechanical loads (pressure and bolt loads). The heat exchanger operation involves phase changes in the media on both the shell and tube sides (boiling/condensing) — as a result, the flanges experience rather severe thermal gradients during regular operation. These thermal gradients cause distortion of the tube sheet and girth flange and result in relaxation of the gasket compression in specific areas. This paper will provide a detailed discussion about the numerical simulation studies that were performed on the girth flange joint, as well as the modifications that were proposed to alleviate the problem.

scholarly journals NUMERICAL SIMULATION OF SHELL AND TUBE HEAT EXCHANGER IN ANSYSFLUENT SOFTWARE

2021 ◽  
Vol 10 (4) ◽  
pp. 174-179
Author(s):  
Andrey S. GORSHENIN ◽  
Natalya Petrovna KRASNOVA ◽  
Julia Igorevna RAKHIMOVA
Keyword(s):  
Mathematical Modeling ◽  
Numerical Simulation ◽  
Heat Exchanger ◽  
Element Analysis ◽  
Tube Heat Exchanger ◽  
Nite Element ◽  
Software Product ◽  
Water Shell ◽  
Analysis Package ◽  
Shell And Tube

Numerical modeling of a water-to-water shell-and-tube heat exchanger using the capabilities of mathematical modeling by means of a fi nite element analysis package is considered. An algorithm for solving problems of heat and mass transfer in the ANSYSFluent software product is proposed. A distinctive feature of this algorithm is the simplicity and accuracy of the calculations. In the course of the study, the contours of the velocity and temperature distribution in the heat exchanger were obtained, and the data obtained using computer modeling were verifi ed with an analytical solution.

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