The optimum design of honeycomb solar ponds and a comparison with salt gradient ponds

Abstract A computer model of the thermal performance of a floating honeycomb pond cover has been developed. The model considers solar transmittance through the cover and heat losses due to long-wave radiation, conduction, and convection. Convection stability within the honeycomb cells is addressed. The study concludes that an optimized honeycomb cover for industrial process heat should be 6–9 cm thick with 1.25 – 1.5 cm diameter cells. Two case studies are presented. The cost of building honeycomb solar ponds and salt gradient ponds are compared. Published costs by a leading honeycomb manufacturer suggest the honeycomb strategy might be competitive. Practical design considerations for honeycomb ponds are also raised.

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