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Ni/γ- Al₂O₃/Metallic foam device를 이용한 고온 태양열 메탄-이산화탄소 개질반응
신일융(Shin Il-yoong),이주한(Lee Ju-han),이진규(Lee Jin-gyu),서태범(Seo Tae-beom) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.4
Solar reforming of methane with CO₂ was successfully tested with a direct irradiated absorber on a parabolic dish capable of 5㎾<SUB>th</SUB> solar power. The new type of catalytically activated metallic foam absorber was prepared, and its activity was tested. Ni was applied as the active metal on the gamma-alumina coated Ni metal foam for the preparation of the catalytically-activated metal foam layer. Compared to conventional direct irradiation of the catalytically-activated ceramic foam absorber, this new metallic foam absorber is found to exhibit a superior reaction performance at the relatively low insolation or at low temperatures. In addition, unlike direct irradiation of the catalytically-activated ceramic foam absorber, metallic foam absorber has better thermal resistance, which prevents the emergence of cracks caused by mechanical or thermal shock. The total solar power absorbed reached up to 2.1㎾ and the maximum CH₄ conversion was almost 40%.
Solar CO₂-Reforming of Methane Using a Catalytically-Activated Metallic Foam Absorber
신일융(Shin Il-yoong),이진규(Lee Jin-Gyu),Nobuyuki Gokon,Tatsuya Kodama,서태범(Seo Tae-Beom) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
Solar reforming of methane with CO₂ was successfully tested with a direct irradiated absorber on a parabolic dish capable of 5㎾<SUB>th</SUB> solar power. The new type of catalytically activated metallic foam absorber was prepared, and its activity was tested. Ni was applied as the active metal on the gamma-alumina coated Ni metal foam for the preparation of the catalytically-activated metal foam layer. Compared to conventional direct irradiation of the catalytically-activated ceramic foam absorber, this new metallic foam absorber is found to exhibit a superior reaction performance at the relatively low insolation or at low temperatures. In addition, unlike direct irradiation of the catalytically-activated ceramic foam absorber, metallic foam absorber has better thermal resistance, which prevents the emergence of cracks caused by mechanical or thermal shock. The total solar power absorbed reached up to 2.1㎾ and the maximum CH₄ conversion was almost 40%.
NiFe<sub>2</sub>O<sub>4</sub>/m-ZrO<sub>2</sub> device를 이용한 고온 태양열 열화학 싸이클의 수소 생산
이진규,신일융,서태범,Lee, Jin-Gyu,Shin, Il-Yoong,Seo, Tae-Beom 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.1
Two-step thermochemical cycle using ferrite-oxide($Fe_3O_4$) device was investigated. The $H_2O$(g) was converted into $H_2$ in the first experiment which was performed using a dish type solar thermal system. However the experiment was lasted only for 2 cycles because the metal oxide device was sintered and broken down. Another problem was that the reaction was taken place mainly on a side of the metal oxide device. The $m-ZrO_2$, which was widely known as a material preventing sintering, was applied on the metal oxide device. The ferrite loading rate and the thickness of the metal oxide device were increased from 10.67wt% to 20wt% and from 10mm to 15mm, respectively. The chemical reactor having two inlets was designed in order to supply the reactants uniformly to the metal oxide device. The second-experiment was lasted for 5 cycles, which was for 6 hours. The total amount of the $H_2$ production was 861.30mL.
더블 레이어 흡수기를 이용한 고온 태양열 메탄-이산화탄소 개질반응
김동연(Kim, Dong-Yeon),신일융(Shin, Il-Yoong),이주한(Lee, Ju-Han),서태범(Seo, Tae-Beom) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11
Solar reforming of methane with CO2 was successfully tested with a direct irradiated absorber on a parabolic dish capable of 5kWth solar power. And the new type of double-layer absorber- the front layer, porous metal foam which absorbs the radiation and transfers the heat from material to gas, and the back layer, catalytically-activated metal foam –was prepared, and its activity was tested by using electric furnace. Ni was applied as the active metal on the gamma–Al2O3coated Ni metal foam for the preparation of the catalytically-activated metal foam layer. Compared to conventional direct irradiation of the catalytically activated metal foam absorber, this new type of double layer absorber is found to exhibit a superior reaction and thermal storage performance at the fluctuating incident solar radiation. In addition, unlike direct irradiation of the foam absorber, double layer absorber has better thermal resistance, which prevents the emergence of cracks caused by mechanical or thermal shock.The total solar power absorbed reached up to 3.25kW and the maximum CH4 conversion was almost 59%.
NiFe₂O₄/m-ZrO₂ device를 이용한 고온 태양열 열화학 싸이클의 수소 생산
이진규(Lee Jin-gyu),신일융(Shin Il-yoong),서태범(Seo Tae-beom) 한국태양에너지학회 2011 한국태양에너지학회 논문집 Vol.31 No.1
Two-step thermochemical cycle using ferrite-oxide(Fe₃O₄) device was investigated. The H₂O(g) was converted into H₂ in the first experiment which was performed using a dish type solar thermal system. However the experiment was lasted only for 2 cycles because the metal oxide device was sintered and broken down. Another problem was that the reaction was taken place mainly on a side of the metal oxide device. Them-ZrO₂, which was widely known as a material preventing sintering, was applied on the metal oxide device. The ferrite loading rate and the thickness of the metal oxide device were increased from 10.67wt% to 20wt% and from 10㎜ to 15㎜, respectively. The chemical reactor having two inlets was designed in order to supply the reactants uniformly to the metal oxide device. The second-experiment was lasted for 5 cycles, which was for 6 hours. The total amount of the H₂ production was 861.30mL.