scholarly journals Temperature effect on thermal-hydraulic performance of one-pass counter-current flow shell-and-tube heat exchanger and upon its design

2021 ◽  
pp. 349-349
Author(s):  
Elmokhtar Elouardi ◽  
Fatima Yatim ◽  
Hassan Chehouani
Keyword(s):  
Heat Exchanger ◽  
Physical Properties ◽  
Temperature Effect ◽  
Current Flow ◽  
Hydraulic Performance ◽  
Dimensionless Quantity ◽  
Tube Heat Exchanger ◽  
Shell And Tube ◽  
Counter Current ◽  
Thermo Physical Properties

A methodology of design and analysis of thermal-hydraulic performance for a single pass 1-1 counter-current flow shell and tube heat exchanger (CCFSTHE) TEMA E type has been established. The temperature effect on the thermo-physical properties of flowing fluids and on the overall coefficient of heat transfer along the heat exchanger is incorporated in our approach, as well as the coupling between different thermal and hydraulic parameters. It has been noted that the correction factor (F) in the HAUSBRAND formula is not included. Our method brings us to a new dimensionless quantity (MKA) which links the calculation parameters of the heat exchanger to the thermo-physical properties. This dimensionless quantity relates the number of transfer units (NTU) to the heat flow ratio (R). The results based on our models show a pronounced deviation compared to the model reported in the literature (NTU method). This deviation may be related to a temperature effect not included in the literature model. It has been shown that the results derived from our models are in a good agreement with experimental data. Our new method, named MKA - method, could be a useful tool for theoretical and experimental studies of the design and analysis of the single pass 1-1 CCFSTHE thermal and hydraulic performance for 0 ? R ?1.

Shape optimization of segmental porous baffles for enhanced thermo-hydraulic performance of shell-and-tube heat exchanger

2020 ◽  
Vol 180 ◽  
pp. 115835 ◽  
Author(s):  
Hamid Reza Abbasi ◽  
Ebrahim Sharifi Sedeh ◽  
Hossein Pourrahmani ◽  
Mohammad Hadi Mohammadi
Keyword(s):  
Heat Exchanger ◽  
Shape Optimization ◽  
Hydraulic Performance ◽  
Tube Heat Exchanger ◽  
Shell And Tube

scholarly journals Perancangan Eco Heat Exchanger Type 1-2 Shell And Tube dan Pengaruh Jumlah Baffle Terhadap Transfer Panas

2018 ◽  
Vol 1 (1) ◽  
pp. 27
Author(s):  
Chandra Wicaksono ◽  
Eky Wijanarko ◽  
Oggi Hebernando Simanullang ◽  
Aswar Tahad
Keyword(s):  
Heat Exchanger ◽  
Pilot Plant ◽  
Tube Heat Exchanger ◽  
Shell And Tube ◽  
Counter Current

Alat penukar panas atau heat exchanger berfungsi untuk mengubah temperatur suatu jenis fluida. Proses tersebut terjadi dengan memanfaatkan proses perpindahan kalor dari fluida bersuhu tinggi menuju fluida bersuhu rendah. Pertukaran panas terjadi karena adanya kontak, baik antara fluida terdapat dinding yang memisahkannya. Salah satu jenis dari alat penukar panas yag serin ditemui dalam industri adalah tipe 1-2 Shell and Tube Heat Exchanger. Tipe ini berdasarkan aliran yang terjadi didalamnya dibedakan menjadi aliran searah (Co-Current) dan aliran berlawanan (Counter Current). Penelitian ini dimaksudkan untuk merancang alat penukar panas tipe 1-2 Heat Exchanger dalam skala pilot plant untuk mengetahui pengaruh jumlah baffle terhadap transfer panas. Penelitian ini membandingkan pengaruh transfer panas dengan variasijumlah baffle 2, 3 dan 4 buah. Hasil dari penelitian didapat menyatakan bahwa pengaruh jumlah baffle merupakan salah satu dari sebagian banyak faktor yang mempengaruhi efektivats transfer panas.Kata Kunci : Heat Exchanger, Shell dan Tube, Transfer Panas

Interactive Computer Aided Preliminary Design of Shell and Tube Heat Exchangers

2010 ◽  
Author(s):  
Hossin Omar
Keyword(s):  
Experimental Data ◽  
Heat Exchanger ◽  
Physical Properties ◽  
Heat Exchangers ◽  
Preliminary Design ◽  
Tube Heat Exchanger ◽  
Design Program ◽  
Program Language ◽  
Computer Aided ◽  
Shell And Tube

The objective of this work is to develop an interactive computer aided preliminary design program for shell and tube heat exchanger based on the Bell (Delaware) method with internal evaluation of all required physical properties utilizing the best methods in the open literature known for their accuracy and reliability. FORTRAN90 is the program language used in this work. All mechanical and geometrical required data are internally evaluated. This program will be used to study the performance of Bell (Delaware) method by comparing the results obtained via this program with experimental data from industry. Cost estimates are to be generated by the program for all components, using very well known cost estimate techniques. Finally, the developed program was tested for accuracy and consistency against existing design cases from industry. The program was tested with other six experimental samples, and it was found that the program work accurately and the percentage of error in most parameters are in the allowable.

Parametric and Uncertainty Study of a Counter Current LBE-Water Heat Exchanger With TRACE and SUSA

2012 ◽  
Author(s):  
Wadim Jäger ◽  
Victor Sánchez ◽  
Diego Castelliti
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Heat Exchanger ◽  
Physical Properties ◽  
Oxide Layer ◽  
Sensitivity Study ◽  
Physical Models ◽  
Transfer Model ◽  
Counter Current ◽  
Thermo Physical Properties

Due to the variety of existing physical models for the heat transfer and for the description of thermo physical properties, the modeling results of different users for the same design can be different. These discrepancies can be rather big and have therefore a big impact on the thermo hydraulic performance of the investigated design proposals, in the present case a LBE-water counter current heat exchanger. A parametric, and a subsequent uncertainty and sensitivity study, is performed with different LBE to wall heat transfer models and different sets of the thermo physical properties of the heat exchanger material, steel and oxide layer. The investigations reveal that with best practice models the transferred power of the investigated heat exchanger design can range from 26 MW to 31 MW, with a target value of 27.5 MW. For the parametric study the thermal conductivity range of the oxide has the biggest impact on the results while for the uncertainty analysis the heat transfer model and the thermal conductivity of the oxide layer are of importance.

Flanged Joints of Multi-Pass Shell-and-Tube Heat Exchangers Subjected to Non-Axisymmetric Thermal Loading

2010 ◽  
Author(s):  
Natalia Petrova ◽  
Abdel-Hakim Bouzid
Keyword(s):  
Heat Exchanger ◽  
Heat Exchangers ◽  
Thermal Loading ◽  
Current Flow ◽  
Finite Element Models ◽  
Bolted Joint ◽  
Tube Heat Exchanger ◽  
Specific Geometry ◽  
Shell And Tube

Despite the fact that multipass shell-and-tube heat exchangers operating at high temperature are subject to frequent problems related to flange sealing, there is neither detailed explanations for the reasons of the failures nor adequate solution to this problem. Specific geometry of multipass heat exchangers and the temperature difference between the inlet and the outlet fluids are responsible for the existence of a thermal circumferential gradient at the shell-to-channel bolted joint. However, existing flange design methods do not address non-axisymmetrical temperature loading of the flanged joint assembly. The circumferential thermal gradient, as the cause of frequent failures to seal the flanged joints, is ignored. This paper outlines the analytical modeling of a flanged joint with a tube sheet of a multipass heat exchanger subjected to a non-axisymmetrical thermal loading. A shell-and-tube heat exchanger of 51 in diameter with co-current flow was used for analysis. The main steps of the theoretical analysis used for the determination of the circumferential temperature profiles and the thermal expansion displacements and distortions of the bolted joint components are given. The results from the proposed analytical model are compared to those obtained from finite element models.

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