DEVELOPMENT OF CSP USING CONVEX LENSES FOR DOMESTIC WATER HEATING

Vinod kumar verma, Vipin Tripathi, Vivek Kumar Verma, Mohd Nuzaif

Abstract: This paper presents one such effort to explore the potential of convex lens to be used for water heating application. In this work, manufactured using six convex lenses and copper receiver tube, for the better performance one side of copper receiver tube converted in to circular to flat The two axis manual tracking system is used to continuous track the sun. Testing was performed on 24nd April, 2014 in solar energy lab SHIATS Allahabad with different mass flow rates. The conversion of solar energy from sun into the useful form is done by the CSP collectors. CSP system is found suitable for its application for the hot water for domestic and the industrial applications and emerges as a best candidate to replace the conventional fossil fuels based systems in eco-friendly manner. The various system designs are developed and commercialized till date viz. parabolic trough collector, Fresnel trough collector etc. but still there is a scope for the system having low thermal losses and high efficiency. The CSP is designed with the six convex lenses (10cm. each dia.) and double copper receiver of size 8mm I.D. and 9 mm O.D. The system is tested during the month of April 2014, when the solar intensity measured was, from 981 W/m2 to 1008 W/m2.

Keywords: CSP using convex lens, thermal efficiency, overall heat transfer coefficient, transmissivity etc

DOI: https://doi.org/10.15623/ijret.2014.0305127