Mathematical Analysis of Discretized Solar Parabolic Collector

SEEE DIGIBOOK ON ENGINEERING & TECHNOLOGY, VOL. 01, FEB 2018 PP.(158-163)
Abstract– With the depletion of petroleum products and coal there is raised a wide space for the use of renewable resources like solar energy, wind energy for electricity generation and for the purpose of cooling the room space. The solar thermal collectors utilize the solar thermal energy to heat up a system. The huge versions of solar thermal collectors are also in use for power generation purposes. In that major types are flat plate collectors and parabolic collectors. Flat plate collector is cheap and low efficiency and parabolic collector is having high efficiency but high cost. So a new hybrid solar collector is proposed that is discretized solar parabolic collector. It has the advantages of both parabolic and flat plate collector. The discretized reflector system uses flat reflecting surfaces instead of curved reflectors. Since the reflecting surfaces are flat, the reflecting surfaces cannot be kept as a whole. Instead, the flat reflecting surfaces are divided into small discrete reflecting surfaces. As the discretized reflecting surfaces are flat, they cannot focus the solar radiation towards a single line of focus. Instead, the reflected beam radiation will be a plane when it is looked from the receiver. So, to collect all the reflected radiation, the size of the receiver tube is same as width of individual discrete reflecting surface. This study focus on mathematical analyzis of linear property of conventional parabola with a proposed discretized parabolic collector. The analysis carried out by taking two geometries such that conventional parabola and individual lines that were drawn using MS excel, the coincidence of both geometries were analyzed. The obtained results suggesting that curved parabolic mirror can be replaced with an individual linear mirror.
Index Terms – Concentrated Solar Power(CSP), Focal point, Parabolic collector, Linear Fresnel Collector, Discretization, Linearity.
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Mohamed Anwar A U, Parimala Murugaveni
Government College of Technology,
Coimbatore, India
mohamedanwarau@gmail.com

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