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
2021 ◽  
pp. 349-349
Author(s):  
Elmokhtar Elouardi ◽  
Fatima Yatim ◽  
Hassan Chehouani

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.


Open Physics ◽  
2020 ◽  
Vol 18 (1) ◽  
pp. 1136-1145
Author(s):  
Xinghua Fu ◽  
Youqiang Wang ◽  
Chulin Yu ◽  
Haiqing Zhang ◽  
Jin Wang ◽  
...  

Abstract The thermal-hydraulic performance of a new parallel-flow shell and tube heat exchanger (STHX) with equilateral cross-sectioned wire coil (HCBetwc-STHX) is investigated in turbulent regime. Four different surrogate models are established to predict the thermal-hydraulic performance. Their merits and drawbacks are illustrated. The results show that the Nuetwc/NuRRB and f etwc/f RRB are in the range of 1.1638–1.855 and 4.078–16.062, respectively. The precision of CFM is the lowest, whereas the precision of radial basis function + artificial neural network and Kriging model is the highest. A good balance can be achieved by response surface methodology between precision and cost. Finally, a general analysis procedure is presented for the predicting method of thermal-hydraulic performance of different STHX with relatively small cost and high precision.


Author(s):  
Leonardo Cavalheiro Martinez ◽  
Leonardo Cavalheiro Martinez ◽  
Viviana Mariani ◽  
Marcos Batistella Lopes

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