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Article Dans Une Revue International Journal of Hydrogen Energy Année : 2010

Heat transfer model and scale-up of an entrained-flow solar reactor for the thermal decomposition of methane

G. Maag
  • Fonction : Auteur
S. Rodat
A. Steinfeld
  • Fonction : Auteur

Résumé

Energy Methane Hydrogen Carbon Reactor model a b s t r a c t The solar thermochemical decomposition of CH 4 is carried out in a solar reactor consisting of a cavity-receiver containing an array of tubular absorbers, through which CH 4 flows and thermally decomposes to H 2 and carbon particles. A reactor model is formulated by coupling radiation/convection/conduction heat transfer and chemical kinetics for a two-phase solid-gas reacting flow. Experimental validation is accomplished by comparing measured and simulated absorber temperatures and H 2 concentrations for a 10 kW prototype reactor tested in a solar furnace. The model is applied to optimize the design and simulate the performance of a 10 MW commercial-scale reactor mounted on a solar tower system configuration. Complete conversion is predicted for a maximum CH 4 mass flow rate of 0.70 kg s À1 and a desired outlet temperature of 1870 K, yielding a solar-to-chemical energy conversion efficiency of 42% and a solar-to-thermal energy conversion efficiency of 75%.

Dates et versions

hal-02567117 , version 1 (12-05-2020)

Identifiants

Citer

G. Maag, S. Rodat, G. Flamant, A. Steinfeld. Heat transfer model and scale-up of an entrained-flow solar reactor for the thermal decomposition of methane. International Journal of Hydrogen Energy, 2010, 35 (24), pp.13232-13241. ⟨10.1016/j.ijhydene.2010.08.119⟩. ⟨hal-02567117⟩
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