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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

NUMERICAL SIMULATION ON FLOW AND HEAT TRANSFER CHARACTERISTICS OF METHANE CARBON MIXTURE FLOW UNDER CONCENTRATED SOLAR RADIATION

Get access (open in a dialog) DOI: 10.1615/IHTC16.nee.024168
pages 7730-7736

Resumo

Excessive utilization of coals can cause a big problem for the environment. Therefore, harvesting of renewable energy becomes very important. Hydrogen production through methane decomposition under concentrated solar radiation is a promising technique. Since gas absorbs only little of solar radiation, particles can be dispersed in the gas to increase absorptance of solar radiation. In the paper, flow and heat transfer of methane-particles flow in a solar thermal reactor is carried out through CFD simulation. Numerical simulation has been done to study flow and heat transfer characteristics in a solar cyclone reactor. Through the analysis of particle trajectories and temperature distribution in reactor for different flow rate of methane, a conclusion can be drawn: mainstream gas adding carbon particles can effectively improve the temperature of the reactor and obtain a more uniform temperature distribution, the increase of the main flow velocity can create a stable vortex flow, while the large flow rate decreases the residence time of the particles, which influences the temperature of the reactor.