The effects of tape insert material on the flow and heat transfer in a nanofluid-based double tube heat exchanger: Two-phase mixture model

2019 ◽  
Vol 156 ◽  
pp. 397-409 ◽  
Author(s):  
Ali Karimi ◽  
Abdullah A.A.A. Al-Rashed ◽  
Masoud Afrand ◽  
Omid Mahian ◽  
Somchai Wongwises ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Mixture Model ◽  
Two Phase ◽  
Tube Heat Exchanger ◽  
Flow And Heat Transfer ◽  
Phase Mixture

A modified two-phase mixture model of nanofluid flow and heat transfer in a 3-D curved microtube

2016 ◽  
Vol 27 (5) ◽  
pp. 2175-2185 ◽  
Author(s):  
Omid Ali Akbari ◽  
Mohammad Reza Safaei ◽  
Marjan Goodarzi ◽  
Noreen Sher Akbar ◽  
Majid Zarringhalam ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Mixture Model ◽  
Nanofluid Flow ◽  
Two Phase ◽  
Flow And Heat Transfer ◽  
Phase Mixture

Experimental Investigation of Heat Transfer Enhancement of Shell and Tube Heat Exchanger Using SnO2-Water and Ag-Water Nanofluids

2019 ◽  
Vol 12 (4) ◽  
Author(s):  
S. V. Sridhar ◽  
R. Karuppasamy ◽  
G. D. Sivakumar
Keyword(s):  
Heat Transfer ◽  
Thermal Conductivity ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Transfer Coefficient ◽  
Convective Heat Transfer Coefficient ◽  
Two Phase ◽  
Tube Heat Exchanger ◽  
Shell And Tube

Abstract In this investigation, the performance of the shell and tube heat exchanger operated with tin nanoparticles-water (SnO2-W) and silver nanoparticles-water (Ag-W) nanofluids was experimentally analyzed. SnO2-W and Ag-W nanofluids were prepared without any surface medication of nanoparticles. The effects of volume concentrations of nanoparticles on thermal conductivity, viscosity, heat transfer coefficient, fiction factor, Nusselt number, and pressure drop were analyzed. The results showed that thermal conductivity of nanofluids increased by 29% and 39% while adding 0.1 wt% of SnO2 and Ag nanoparticles, respectively, due to the unique intrinsic property of the nanoparticles. Further, the convective heat transfer coefficient was enhanced because of improvement of thermal conductivity of the two phase mixture and friction factor increased due to the increases of viscosity and density of nanofluids. Moreover, Ag nanofluid showed superior pressure drop compared to SnO2 nanofluid owing to the improvement of thermophysical properties of nanofluid.

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