scholarly journals Thermal tests of a multi-tubular reactor for hydrogen production by using mixed ferrites thermochemical cycle

2017 ◽  
Author(s):  
Aurelio Gonzalez-Pardo ◽  
Thorsten Denk ◽  
Alfonso Vidal
Keyword(s):  
Hydrogen Production ◽  
Tubular Reactor ◽  
Thermochemical Cycle ◽  
Thermal Tests ◽  
Mixed Ferrites

scholarly journals Multi-Tubular Reactor for Hydrogen Production: CFD Thermal Design and Experimental Testing

Processes ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 31 ◽  
Author(s):  
Elvira Tapia ◽  
Aurelio González-Pardo ◽  
Alfredo Iranzo ◽  
Manuel Romero ◽  
José González-Aguilar ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Experimental Testing ◽  
Tubular Reactor ◽  
Experimental Tests ◽  
Thermal Design ◽  
Thermochemical Cycle ◽  
Cfd Model ◽  
Cfd Modelling ◽  
Solar Reactor ◽  
Computational Fluid Dynamics Cfd

This study presents the Computational Fluid Dynamics (CFD) thermal design and experimental tests results for a multi-tubular solar reactor for hydrogen production based on the ferrite thermochemical cycle in a pilot plant in the Plataforma Solar de Almería (PSA). The methodology followed for the solar reactor design is described, as well as the experimental tests carried out during the testing campaign and characterization of the reactor. The CFD model developed for the thermal design of the solar reactor has been validated against the experimental measurements, with a temperature error ranging from 1% to around 10% depending on the location within the reactor. The thermal balance in the reactor (cavity and tubes) has been also solved by the CFD model, showing a 7.9% thermal efficiency of the reactor. CFD results also show the percentage of reacting media inside the tubes which achieve the required temperature for the endothermic reaction process, with 90% of the ferrite pellets inside the tubes above the required temperature of 900 °C. The multi-tubular solar reactor designed with aid of CFD modelling and simulations has been built and operated successfully.

Electrophoretic Deposition of Nanoparticles as Electrocatalysts for Electrolysis in the Solar Sulfur Ammonia Hydrogen Production

2015 ◽  
Vol 654 ◽  
pp. 76-82
Author(s):  
Nicole S. Pacheco ◽  
Neil Verma ◽  
Komail Haider ◽  
Jan B. Talbot
Keyword(s):  
Hydrogen Production ◽  
Ammonium Sulfate ◽  
Electrophoretic Deposition ◽  
Electrocatalytic Activity ◽  
Cobalt Ferrite ◽  
Ferrite Nanoparticles ◽  
Thermochemical Cycle ◽  
Cobalt Ferrite Nanoparticles ◽  
Ammonium Sulfite

Cobalt ferrite nanoparticles were deposited using electrophoretic deposition from two different bath chemistries, 90 vol.% water and 10 vol.% isopropanol with hexadecyltrimethlyammonium bromide (CTAB) and 100 % ethanol. The deposits were tested for electrocatalytic activity for the oxidation of ammonium sulfite to ammonium sulfate as part of a solar sulfur ammonia thermochemical cycle to produce hydrogen.

Hydrogen production via a novel two-step solar thermochemical cycle based on non-volatile GeO2

Solar Energy ◽  
2019 ◽  
Vol 179 ◽  
pp. 30-36 ◽  
Author(s):  
Mingkai Fu ◽  
Tianzeng Ma ◽  
Lei Wang ◽  
Shaomeng Dai ◽  
Zheshao Chang ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Thermochemical Cycle ◽  
Solar Thermochemical
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