TY - GEN
T1 - Transient three-dimensional heat transfer model of a solar thermochemical reactor for H2Oand CO2 splitting via nonstoichiometric ceriaredox cycling
AU - Lapp, Justin
AU - Lipiński, Wojciech
PY - 2013
Y1 - 2013
N2 - A transient heat transfer model is developed for a solar reactor prototype for H2Oand CO2splitting via two-step non-stoichiometric ceria cycling. Counter-rotating cylinders of reactive and inert materials cycling between high and low temperature zones permit continuous operation and heat recovery. To guide the reactor designa transient three-dimensional heat transfer model is developed based on transient energy conservation,accounting for conduction, convection, radiation, and chemical reactions. The model domain includes the rotating cylinders, a solar receiver cavity, and insulated reactor body. Radiative heat transferis analyzed usinga combination of the Monte Carlomethod, Rosseland diffusion approximation, and the net radiation method. Quasi-steady statedistributions of temperatures,heat fluxes, and the non-stoichiometric coefficient arereported. Ceriacycles between temperatures of 1708 K and 1376 K. A heat recovery effectiveness of 28% and solar-to-fuel efficiency of5.2%are predicted for an unoptimized reactor design.
AB - A transient heat transfer model is developed for a solar reactor prototype for H2Oand CO2splitting via two-step non-stoichiometric ceria cycling. Counter-rotating cylinders of reactive and inert materials cycling between high and low temperature zones permit continuous operation and heat recovery. To guide the reactor designa transient three-dimensional heat transfer model is developed based on transient energy conservation,accounting for conduction, convection, radiation, and chemical reactions. The model domain includes the rotating cylinders, a solar receiver cavity, and insulated reactor body. Radiative heat transferis analyzed usinga combination of the Monte Carlomethod, Rosseland diffusion approximation, and the net radiation method. Quasi-steady statedistributions of temperatures,heat fluxes, and the non-stoichiometric coefficient arereported. Ceriacycles between temperatures of 1708 K and 1376 K. A heat recovery effectiveness of 28% and solar-to-fuel efficiency of5.2%are predicted for an unoptimized reactor design.
UR - http://www.scopus.com/inward/record.url?scp=84892999352&partnerID=8YFLogxK
U2 - 10.1115/ES2013-18040
DO - 10.1115/ES2013-18040
M3 - Conference contribution
SN - 9780791855515
T3 - ASME 2013 7th Int. Conf. on Energy Sustainability Collocated with the ASME 2013 Heat Transfer Summer Conf. and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, ES 2013
BT - ASME 2013 7th Int. Conf. on Energy Sustainability Collocated with the ASME 2013 Heat Transfer Summer Conf. and the ASME 2013 11th Int. Conf. on Fuel Cell Science, Engineering and Technology, ES 2013
T2 - ASME 2013 7th International Conference on Energy Sustainability, ES 2013 Collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology
Y2 - 14 July 2013 through 19 July 2013
ER -