Influence of a curved conical turbulator on heat transfer augmentation in a helical double‐pipe heat exchanger

Heat Transfer ◽  
2020 ◽  
Author(s):  
Seyed H. Hashemi Karouei ◽  
Seyed S. Mousavi Ajarostaghi
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Augmentation ◽  
Double Pipe ◽  
Pipe Heat

Nanofluid heat transfer augmentation in a double pipe heat exchanger

2020 ◽  
Author(s):  
Kafel Azeez ◽  
Ayad Fouad Hameed ◽  
Adnan M. Hussein
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Augmentation ◽  
Double Pipe ◽  
Pipe Heat

Heat transfer augmentation in double pipe heat exchanger using mechanical turbulators

2016 ◽  
Vol 53 (2) ◽  
pp. 553-567 ◽  
Author(s):  
Kushal Kamboj ◽  
Gurjeet Singh ◽  
Rohit Sharma ◽  
Dilbagh Panchal ◽  
Jaspreet Hira
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Augmentation ◽  
Double Pipe ◽  
Pipe Heat

Effect of hemispherical turbulators in a double-pipe heat exchanger for heat transfer augmentation

2020 ◽  
Vol 21 (3) ◽  
pp. 166-185
Author(s):  
Shiva Kumar ◽  
P. Dinesha ◽  
Akshith Narayanan ◽  
Rahul Nanda
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Augmentation ◽  
Double Pipe ◽  
Pipe Heat

scholarly journals Investigation of Overlapped Twisted Tapes Inserted in a Double-Pipe Heat Exchanger Using Two-Phase Nanofluid

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1656 ◽  
Author(s):  
Mehdi Ghalambaz ◽  
Hossein Arasteh ◽  
Ramin Mashayekhi ◽  
Amir Keshmiri ◽  
Pouyan Talebizadehsardari ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Reynolds Number ◽  
Performance Evaluation ◽  
Heat Exchanger ◽  
Evaluation Criterion ◽  
Twisted Tape ◽  
Performance Evaluation Criterion ◽  
Twisted Tapes ◽  
Double Pipe ◽  
Pipe Heat

This study investigated the laminar convective heat transfer and fluid flow of Al2O3 nanofluid in a counter flow double-pipe heat exchanger equipped with overlapped twisted tape inserts in both inner and outer tubes. Two models of the same (co-swirling twisted tapes) and opposite (counter-swirling twisted tapes) angular directions for the stationary twisted tapes were considered. The computational fluid dynamic simulations were conducted through varying the design parameters, including the angular direction of twisted tape inserts, nanofluid volume concentration, and Reynolds number. It was found that inserting the overlapped twisted tapes in the heat exchanger significantly increases the thermal performance as well as the friction factor compared with the plain heat exchanger. The results indicate that models of co-swirling twisted tapes and counter-swirling twisted tapes increase the average Nusselt number by almost 35.2–66.2% and 42.1–68.7% over the Reynolds number ranging 250–1000, respectively. To assess the interplay between heat transfer enhancement and pressure loss penalty, the dimensionless number of performance evaluation criterion was calculated for all the captured configurations. Ultimately, the highest value of performance evaluation criterion is equal to 1.40 and 1.26 at inner and outer tubes at the Reynolds number of 1000 and the volume fraction of 3% in the case of counter-swirling twisted tapes model.

Sign in / Sign up

Export Citation Format

Share Document