On the nuclear safety improvement by post-inerting small modular reactor with stainless steel cladding

Avelar, Alan Matias; Mourão, Marcelo Breda; Maturana, Marcos Coelho; Giovedi, Claudia; Abe, Alfredo; Pedrassani, Rafaela; Su, Jian

doi:10.1016/j.anucene.2020.107775

Cited by 5 publications

(2 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This methodology has been applied by other authors, proving to be valid if the experimental arrangement is completely sealed, preventing the oxygen entry. 46,47 The oxidized samples were characterized by a scanning electron microscopy using a FEI microscope model Inspect f50 equipped with an EDS detector. The phases in the samples were characterized by an X-ray diffraction analysis using a Philips X'PERT MPD equipment.…”

Section: Oxidation Stepmentioning

confidence: 99%

See 1 more Smart Citation

Experimental study of a two‐stage thermochemical cycle for hydrogen production

Cardona

Narita

Mourão

et al. 2021

Intl J of Energy Research

View full text Add to dashboard Cite

The use of renewable energy sources is the main strategy toward a low-carbon society. A promising alternative for the production of hydrogen gas is the water-splitting thermochemical cycles activated by solar energy. This work presents an experimental study of a two-stage thermochemical cycle for hydrogen production. It is based on the carbothermic reduction of iron ore (Fe 2 O 3 ) and the re-oxidation of it with steam can be powered by concentrated solar energy. Samples studied were self-reducing pellets. The first stage of the proposed cycle consists in the reduction of hematitic iron oxide into its own metal at temperatures above 1173 K. The second phase of the cycle consists of iron metal oxidation by steam, which produces hydrogen gas. Sponge iron samples obtained in this work had a specific surface area of 35.05 m 2 /g measured by the BET method, which is a high value compared to specific surface areas obtained from conventional processes. It was shown that at 973 K the hydrogen gas production rate is slower, whereas at 1073 K and at 1173 K the sample reached 63% of its maximum oxygen gain between 2 and 7.5 minutes, respectively. As the hydrogen gas production rate is also proportional to the iron oxidation rate, it was shown to be very important to balance out the hydrogen gas production over the entire cycle time as a function of temperature. Finally, the analyzed thermochemical cycle can also operate with any other renewable carbon source.

show abstract

Section: Oxidation Stepmentioning

confidence: 99%

“…The oxidation degree was also used to estimate the production of hydrogen gas. This methodology has been applied by other authors, proving to be valid if the experimental arrangement is completely sealed, preventing the oxygen entry 46,47 …”

Section: Test Rig and Experimentsmentioning

confidence: 99%