Experimental Analysis on Longitudinal Finned Tube Heat Exchanger and Numerical Investigation on Parameters that Accrue the Overall Heat Transfer Coefficient
The presence of nanofluids ascertained great augmentation in heat transfer. Several works have been done so far to parameterize the properties of nanofluid in relation to augmentation of heat transfer. In conjunction to this, the present work focuses on heat transfer within a longitudinal finned tube heat exchanger with simulated employment of nanofluids. Experimentation is done on longitudinal finned tube heat exchanger and the results were compared with numerical simulations using ANSYS CFX for different flow rates. The nanofluid obtained by mixing 0.8 % volume fraction of Aluminum oxide (Al2O3) nano powder in water has shown assuring results in the augmenting heat transfer and thereby, it is selected as a shell side fluid for analysis. The simulated nanofluid analysis was done with single phase homogenous approach in CFD by updating the user functions and CEL expressions with thermo-physical properties of the selected nanofluid. These results were thereafter compared against the results obtained for pure water when used as a shell side fluid. This paper further, throws light on the parameters that are responsible for augmenting the overall heat transfer coefficient of the heat exchanger by conducting a statistical analysis using Taguchi's technique and ANOVA.Keywords: ANSYS CFX 15, longitudinal finned tube heat exchanger, user functions and CEL expressions, TaguchiCite this ArticleP. Konchada, P. Dheeraj, PV. Vinay, S. Purnima. Experimental Analysis on Longitudinal Finned Tube Heat Exchanger and Numerical Investigation on Parameters That Accrue The Overall Heat Transfer Coefficient. Journal of Thermal Engineering and Application. 2016; 3(1): 29–41p.
