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Journal of Astrophysics & Aerospace Technology | ISSN: 2329-6542 | Volume 6
Planetary Science and Particle Physics
International Conference on
August 27-28, 2018 | Boston, USA
A comparative entropy based analysis of cu and fe3o4/ methanol powell-eyring nanofluid in solar
thermal collectors subjected to thermal radiation, variable thermal conductivity and impact of different
nanoparticles shape
Wasim Jamshed
Penn State York, USA
T
he efficiency of any nanofluid based thermal solar system depends on the thermophysical properties of the operating fluids, type,
and shape of nanoparticles, nanoparticles volumetric concentration in the base fluid and the geometry/length of the system in
which fluid is flowing. The recent research in the field of thermal solar energy has been focused to increase the efficiency of solar
thermal collector systems. In the present research, a simplified mathematical model is studied for inclusion in the thermal solar
systems with the aim to improve the overall efficiency of the system. The flow of Powell-Eyring nanofluid is induced by non-uniform
stretching of the porous horizontal surface with fluid occupying a space over the surface. The thermal conductivity of the nanofluid
is to vary as a linear function of temperature and the thermal radiation is to travel a short distance in the optically thick nanofluid.
Numerical scheme of Keller box is implemented on the system of nonlinear ordinary differential equations, which are resultant after
application of similarity transformation to governing nonlinear partial differential equations. The impact of non-dimensional physical
parameters appearing in the system has been observed on velocity and temperature profiles along with the entropy of the system.
The velocity gradient (skin friction coefficient) and the strength of convective heat exchange (Nusselt number) are also investigated.
Wasiktk@hotmail.comJ Astrophys Aerospace Technol 2018, Volume 6
DOI: 10.4172/2329-6542-C2-021