Improvements to the solar wax smelter

Abstract

A number of papers have established the feasibility of melting waxes for candle making using solar energy. In this paper, methods of upgrading the systems and alternative systems of better efficiency are proposed. The following aspects of optimal collection of energy are dealt with: (a) optimal orientation of collector, (b) azimuthal tracking and (c) the use of four mirrors to boost the energy incident on the collector. An improvement to the heat transfer to the wax is effected by incorporation of a freely convecting heat transfer liquid loop. The wax is now placed in a liquid bath to encourage immediate and rapid melting. Design factors which improve user convenience and safety are also mentioned and an estimation of the improvement in energy collection over previous models and practice is indicated.