<P><B>Abstract</B></P> <P>Gas-solid circulating fluidized beds (CFBs) are for carbon capture process because of their remarkable heat and mass transfer characteristics in the target reactor. Bed-to-wall heat transfer is ...
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https://www.riss.kr/link?id=A107430403
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2017
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SCI,SCIE,SCOPUS
학술저널
852-865(14쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P><B>Abstract</B></P> <P>Gas-solid circulating fluidized beds (CFBs) are for carbon capture process because of their remarkable heat and mass transfer characteristics in the target reactor. Bed-to-wall heat transfer is ...
<P><B>Abstract</B></P> <P>Gas-solid circulating fluidized beds (CFBs) are for carbon capture process because of their remarkable heat and mass transfer characteristics in the target reactor. Bed-to-wall heat transfer is an important issue in designing a reactor to satisfy the required conditions. Bed-to-wall heat transfer is characterized by near-wall particle behavior. Thus, in this study, local bed-to-wall heat transfer and near-wall particle dynamic characteristics were measured in a lab-scale CFB riser. The clustered particle behavior near the wall was investigated primarily using a non-intrusive method, particle-imaging velocimetry (PIV), within the CFB riser. To determine the effects of bed instability on the clustered particle behavior at the wall, bed instability was controlled. Bed instability was estimated by the degree of pressure fluctuation in the riser, and the fluctuation effect was compared, depending on the fluidization regime. Ultimately, the clustered particle behavior on the adjacent wall was compared depending on the pressure fluctuations using the PIV system. We estimated the clustered particle behavior on the adjacent wall of the CFB riser considering fluidization instability. Detailed analysis of the relationship between the bed-to-wall heat transfer and the particle behavior was conducted.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Heat transfer is measured to design heat-exchangeable CO<SUB>2</SUB> capture reactor. </LI> <LI> Near-wall thermal-fluid characteristics is distinguished by operating conditions. </LI> <LI> Bed-to-wall heat transfer is enhanced with increasing particle clustering. </LI> </UL> </P>
사회지향 기계기술 글로벌 리더 양성 사업단 (1345274079) / 2017 / BK21플러스사업(0.5) / 전흥재 / 연세대학교 / 교육부 / 940,189,000
에너지 교환형 유동층 CO2 포집기술 개발 (1711057977) / 2017 / 기후변화대응기술개발 / 박용기 / 한국화학연구원 / 과학기술정보통신부 / 990,000,000
사회지향 기계기술 글로벌 리더 양성 사업단 (1345274079) / 2017 / BK21플러스사업(0.5) / 전흥재 / 연세대학교 / 교육부 / 940,189,000
에너지 교환형 유동층 CO2 포집기술 개발 (1711057977) / 2017 / 기후변화대응기술개발 / 박용기 / 한국화학연구원 / 과학기술정보통신부 / 990,000,000