S. Taramona, J.V. Briongos, S. Sánchez-Delgado, J. Gómez-Hernández
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引用次数: 0
Abstract
The integration of solar concentrating technologies for the industrial drying and heating is a compelling approach to reduce the carbon emissions associated with low-to-mid temperature processes. This work couples the Beam-Down Linear Fresnel (BDLFR) solar technology with a conveyor belt receiver to dry and heat the virgin aggregates employed in asphalt industry. A novel lumped drying model for a fixed bed of dolomitic lime particles with low moisture content serves to explore the feasibility of the BDLFR technology for sustainable asphalt production. On-sun drying tests have been performed to validate the model for average heat fluxes of 2–5 kW/m2. It has been found that shallow beds operated with low heat fluxes received at the bed surface are not affected by horizontal mass transfer diffusion, and provide the maximum drying in the final products. The estimated BDLFR cost using a conveyor belt receiver is per m2 of primary mirrors. The Levelized Cost of the Product calculated considers a lifetime of 20 years, an inflation rate of 3.5 % and a real discount rate of 7.6 %. The production cost of the BDLFR prototype would range between depending on the drying time, and the average solar concentration. The solar technology might be competitive when the CO2 emission costs are for fuel oil, and for natural gas.
期刊介绍:
Encouraging a transition to a sustainable energy future is imperative for our world. Technologies that enable this shift in various sectors like transportation, heating, and power systems are of utmost importance. Sustainable Energy Technologies and Assessments welcomes papers focusing on a range of aspects and levels of technological advancements in energy generation and utilization. The aim is to reduce the negative environmental impact associated with energy production and consumption, spanning from laboratory experiments to real-world applications in the commercial sector.