Experimental investigation of surface vibration effects on increasing the stability and heat transfer coeffcient of MWCNTs-water nanofluid in a flexible double pipe heat exchanger

2018 ◽  
Vol 90 ◽  
pp. 275-285 ◽  
Author(s):  
A. Hosseinian ◽  
A.H. Meghdadi Isfahani ◽  
E. Shirani
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Heat Exchanger ◽  
Surface Vibration ◽  
The Stability ◽  
Double Pipe ◽  
Pipe Heat

Experimental investigation on heat transfer and pressure drop of MWCNT - Solar glycol based nanofluids in shot peened double pipe heat exchanger

2019 ◽  
Vol 345 ◽  
pp. 815-824 ◽  
Author(s):  
Ganesh Kumar Poongavanam ◽  
Karthik Panchabikesan ◽  
Renuka Murugesan ◽  
Sakthivadivel Duraisamy ◽  
Velraj Ramalingam
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Heat Exchanger ◽  
Pressure Drop ◽  
Double Pipe ◽  
Pipe Heat

scholarly journals Experimental investigation on heat transfer in double pipe heat exchanger employing triangular fins

2018 ◽  
Vol 402 ◽  
pp. 012137 ◽  
Author(s):  
V Mathanraj ◽  
Velaga Leela Krishna ◽  
Jampana Lakshmi Venkanna Babu ◽  
S. Arul Kumar
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Heat Exchanger ◽  
Double Pipe ◽  
Pipe Heat

Experimental Investigation of Heat Transfer and Friction Factor Characteristics Using Helical Surface Ring Turbulators in an Annulli of Double Pipe Heat Exchanger

2018 ◽  
Author(s):  
Saurabh Yadav ◽  
Maheandera Prabu Paulraj ◽  
Santosh K. Sahu
Keyword(s):  
Heat Transfer ◽  
Experimental Investigation ◽  
Heat Exchanger ◽  
Fluid Flows ◽  
Diameter Ratio ◽  
Helical Surface ◽  
Pitch Ratio ◽  
Plain Surface ◽  
Double Pipe ◽  
Pipe Heat

Augmentation in heat transfer is very useful for various engineering and scientific applications due to the call for energy and cost saving. The heat transfer and pressure drop characteristics in annuli of double pipe heat exchanger using helical and plain surface ring turbulators are studied through experimental investigation. The effect of helical surface ring turbulators and plain surface ring turbulators are studied for varied range of pitch ratio (4.0–6.4), Reynolds Number (3,000–10,500) and two different diameter ratios (0.475 and 0.54). Water (hot fluid) flows in the inner tube and air (cold fluid) flows through the annulus. The tests are conducted for air with uniform wall temperature condition. The heat exchanger with least pitch and least diameter ratio is found to exhibit the highest Nusselt number and pressure drop. Results indicate that maximum enhancement is obtained for smallest diameter ratio 0.475 and pitch ratio 4.0 at lowest Reynolds Number. Also, thermal performance factor is always greater than unity for the DPHE using helical surface turbulators. Correlations have been developed for enhancement in Nusselt number and friction factor; show the good agreement with experimental test data within test range.

Sign in / Sign up

Export Citation Format

Share Document