Numerical and Experimental Investigation of a Packed bed Thermal energy storage system with hybrid nanofluid

International Journal of Mechanical Engineering

© 2018 by SSRG - IJME Journal

Volume 5 Issue 1

Year of Publication : 2018

Authors : G. Srinivasa Rao, K.V. Sharma

10.14445/23488360/IJME-V5I1P104

How to Cite?

G. Srinivasa Rao, K.V. Sharma, "Numerical and Experimental Investigation of a Packed bed Thermal energy storage system with hybrid nanofluid," SSRG International Journal of Mechanical Engineering, vol. 5,  no. 1, pp. 19-25

Abstract:

The results of a numerical and experimental investigation on the transient behaviour of a packed bed thermal storage system using water based nanofluid and hybrid nanofluid fluids is presented. The storage material consists of spherical particles of glass beads loosely packed in a reservoir wherein the heat transport fluid flows from the bottom to the top in the charging process..The process of charge the storage system gives rise to a typical temperature distribution along the flow direction defined "thermocline". The main objective of this work is to analyze the temperature distribution along the storage system and the formation of the thermocline for repetitive consecutive cycles, evaluating the progressive reduction in the heat capacity for energy storage in the solid material for every new cycle. The numerical investigation is based on a two-phase one-dimensional modified Schumann model, where thermodynamic properties of the fluid are temperature dependent. The temperature profiles, friction factor and Nusselt number are estimated, compared with available literature and shown graphically.

Keywords:

Packed bed; fixed bed modelling; thermal energy storage; thermocline; dynamic model; hybrid nanofluid.

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