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Solar thermochemical conversion of CO2 via erbium oxide based redox cycle
Greenhouse Gases: Science and Technology ( IF 2.7 ) Pub Date : 2020-02-24 , DOI: 10.1002/ghg.1961
Rahul R. Bhosale 1
Affiliation  

Investigation of the viability of the erbium oxide‐based solar thermochemical CO2 splitting cycle is reported. This study aimed to explore the effect of partial thermal reduction (TR) of Er2O3 on the thermodynamic process parameters desirable to design a solar reactor system for the erbium oxide‐based CO2 splitting (ErO‐CS) cycle. First, the percentage TR of Er2O3 is estimated as a function of the TR temperature ( T H ). Acquired results indicated that to achieve a percentage TR of Er2O3 in the range of 5–100%; the solar reactor has to be functioned in the temperature range of T H = 2327–2677 K. The solar energy required to drive the ErO‐CS cycle ( Q ̇ solar-cycle-ErO-CS ) was observed to be on the higher side due to the obligation of the elevated values of T H . This rise in the Q ̇ solar-cycle-ErO-CS as a function of percentage TR of Er2O3 reflected in a decrease in the solar‐to‐fuel energy conversion efficiency ( η solar-to-fuel-ErO-CS ). The maximum η solar-to-fuel-ErO-CS = 4.04% is achieved for a percentage TR of Er2O3 = 25% ( T H = 2432 K). By employing 100% heat recuperation, the η solar-to-fuel-ErO-CS (for percentage TR of Er2O3 = 25%) increased up to 5.79%. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd.

中文翻译:

通过基于氧化b的氧化还原循环进行的二氧化碳的太阳能热化学转化

报告了对基于氧化oxide的太阳热化学CO 2分解循环的可行性的研究。这项研究旨在探讨Er 2 O 3的部分热还原(TR)对热力学过程参数的影响,这些参数对于设计用于基于氧化oxide的CO 2分解(ErO-CS)循环的太阳能反应器系统是理想的。首先,估算Er 2 O 3的TR百分比是TR温度的函数( Ť H )。获得的结果表明,要使Er 2 O 3的百分比TR达到5-100%;太阳能反应器必须在以下温度范围内工作 Ť H = 2327–2677K。驱动ErO-CS周期所需的太阳能( ̇ 太阳周期ErO-CS )由于较高的值的义务被观察到较高的一侧 Ť H 。这种上升 ̇ 太阳周期ErO-CS 与Er 2 O 3的百分比TR的函数关系,反映为太阳能转化为燃料的能量转换效率的降低( η 太阳能ErO-CS )。最大值 η 太阳能ErO-CS Er 2 O 3的百分比TR = 25%(= 4.04% Ť H = 2432 K)。通过采用100%的热量回收, η 太阳能ErO-CS (对于Er 2 O 3的TR百分比= 25%)增加到5.79%。©2020年化学工业协会和John Wiley&Sons,Ltd.
更新日期:2020-02-24
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