Ablative heat transfer in a shrinking packed-bed of ZnO undergoing solar thermal dissociation
A transient heat transfer model is formulated for a shrinking packed-bed of reacting ZnO particles exposed to concentrated solar irradiation. The model combines conduction, convection, and radiation heat transfer with simultaneous sintering and reaction kinetics. Validation is accomplished in terms...
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| Veröffentlicht in: | AIChE journal 2009-07, Vol.55 (7), p.1659-1666 |
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| container_end_page | 1666 |
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| container_issue | 7 |
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| container_title | AIChE journal |
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| creator | Schunk, L.O Lipiński, W Steinfeld, A |
| description | A transient heat transfer model is formulated for a shrinking packed-bed of reacting ZnO particles exposed to concentrated solar irradiation. The model combines conduction, convection, and radiation heat transfer with simultaneous sintering and reaction kinetics. Validation is accomplished in terms of temperatures and dissociation rates experimentally measured using a solar-driven thermogravimeter with ZnO packed-bed samples subjected to solar flux concentration ratios in the range 1225-2133 suns and surface temperatures in the range 1834-2109 K. Operating conditions are typical of an ablation regime controlled by the rate of radiative heat transfer to the first layers of ZnO undergoing endothermic dissociation. © 2009 American Institute of Chemical Engineers AIChE J, 2009 |
| doi_str_mv | 10.1002/aic.11782 |
| format | Article |
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The model combines conduction, convection, and radiation heat transfer with simultaneous sintering and reaction kinetics. Validation is accomplished in terms of temperatures and dissociation rates experimentally measured using a solar-driven thermogravimeter with ZnO packed-bed samples subjected to solar flux concentration ratios in the range 1225-2133 suns and surface temperatures in the range 1834-2109 K. Operating conditions are typical of an ablation regime controlled by the rate of radiative heat transfer to the first layers of ZnO undergoing endothermic dissociation. © 2009 American Institute of Chemical Engineers AIChE J, 2009</description><identifier>ISSN: 0001-1541</identifier><identifier>EISSN: 1547-5905</identifier><identifier>DOI: 10.1002/aic.11782</identifier><identifier>CODEN: AICEAC</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>ablation ; Applied sciences ; Chemical engineering ; concentrated ; conduction ; convection ; dissociation ; Exact sciences and technology ; Heat and mass transfer. 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The model combines conduction, convection, and radiation heat transfer with simultaneous sintering and reaction kinetics. Validation is accomplished in terms of temperatures and dissociation rates experimentally measured using a solar-driven thermogravimeter with ZnO packed-bed samples subjected to solar flux concentration ratios in the range 1225-2133 suns and surface temperatures in the range 1834-2109 K. Operating conditions are typical of an ablation regime controlled by the rate of radiative heat transfer to the first layers of ZnO undergoing endothermic dissociation. © 2009 American Institute of Chemical Engineers AIChE J, 2009</description><subject>ablation</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>concentrated</subject><subject>conduction</subject><subject>convection</subject><subject>dissociation</subject><subject>Exact sciences and technology</subject><subject>Heat and mass transfer. Packings, plates</subject><subject>Heat transfer</subject><subject>packed-bed</subject><subject>radiation</subject><subject>Reaction kinetics</subject><subject>shrinking</subject><subject>sintering</subject><subject>Sintering, pelletization, granulation</subject><subject>Solar energy</subject><subject>Solid-solid systems</subject><subject>Validation studies</subject><subject>Zinc</subject><subject>zinc oxide</subject><subject>Zinc oxides</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2009</creationdate><recordtype>article</recordtype><recordid>eNqNkV9rFDEUxYMouFYf_AQGQcGHaW-Syb_HZdG2UqxgpSBIyGYyu-nOJmsyq_bbmzq1D4LYp0vu_Z1DOAeh5wQOCQA9ssEdEiIVfYBmhLey4Rr4QzQDANLUBXmMnpRyVV-0QjP0db4c7Bi-e7z2dsRjtrH0PuMQscVlnUPchLjCO-s2vmuWvsOpx1_iOd7HzudVujmWNNiMx7XPWzvgLpSSXKimKT5Fj3o7FP_sdh6gi3dvLxYnzdn58eliftY4QThtGCesW1LLhe-15B0HLuVSinpVvOdAW1Bdp6TSGhSjlHnJWyWdFZxVPTtAryfbXU7f9r6MZhuK88Ngo0_7YhgHRbi4B9hqIWti_wUpoUBA0nuAIIArUcGXf4FXaZ9jTcUQrZlkrVIVejNBLqdSsu_NLoetzdeGgLnp19R-ze9-K_vq1tAWZ4e-NudCuRNQIqQEwip3NHE_wuCv_21o5qeLP87NpAhl9D_vFDZvjJBMcnP54dhodqIv37fCfKz8i4nvbTJ2lesvPn-q-TAgolW8pewX0a3IaA</recordid><startdate>200907</startdate><enddate>200907</enddate><creator>Schunk, L.O</creator><creator>Lipiński, W</creator><creator>Steinfeld, A</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley</general><general>American Institute of Chemical Engineers</general><scope>FBQ</scope><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>200907</creationdate><title>Ablative heat transfer in a shrinking packed-bed of ZnO undergoing solar thermal dissociation</title><author>Schunk, L.O ; Lipiński, W ; Steinfeld, A</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c6152-3513db2a56ef975d50577b76c6185f502408dd87899083223e75487ca6531523</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2009</creationdate><topic>ablation</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>concentrated</topic><topic>conduction</topic><topic>convection</topic><topic>dissociation</topic><topic>Exact sciences and technology</topic><topic>Heat and mass transfer. Packings, plates</topic><topic>Heat transfer</topic><topic>packed-bed</topic><topic>radiation</topic><topic>Reaction kinetics</topic><topic>shrinking</topic><topic>sintering</topic><topic>Sintering, pelletization, granulation</topic><topic>Solar energy</topic><topic>Solid-solid systems</topic><topic>Validation studies</topic><topic>Zinc</topic><topic>zinc oxide</topic><topic>Zinc oxides</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Schunk, L.O</creatorcontrib><creatorcontrib>Lipiński, W</creatorcontrib><creatorcontrib>Steinfeld, A</creatorcontrib><collection>AGRIS</collection><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>AIChE journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schunk, L.O</au><au>Lipiński, W</au><au>Steinfeld, A</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Ablative heat transfer in a shrinking packed-bed of ZnO undergoing solar thermal dissociation</atitle><jtitle>AIChE journal</jtitle><addtitle>AIChE J</addtitle><date>2009-07</date><risdate>2009</risdate><volume>55</volume><issue>7</issue><spage>1659</spage><epage>1666</epage><pages>1659-1666</pages><issn>0001-1541</issn><eissn>1547-5905</eissn><coden>AICEAC</coden><abstract>A transient heat transfer model is formulated for a shrinking packed-bed of reacting ZnO particles exposed to concentrated solar irradiation. The model combines conduction, convection, and radiation heat transfer with simultaneous sintering and reaction kinetics. Validation is accomplished in terms of temperatures and dissociation rates experimentally measured using a solar-driven thermogravimeter with ZnO packed-bed samples subjected to solar flux concentration ratios in the range 1225-2133 suns and surface temperatures in the range 1834-2109 K. Operating conditions are typical of an ablation regime controlled by the rate of radiative heat transfer to the first layers of ZnO undergoing endothermic dissociation. © 2009 American Institute of Chemical Engineers AIChE J, 2009</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/aic.11782</doi><tpages>8</tpages></addata></record> |
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| subjects | ablation Applied sciences Chemical engineering concentrated conduction convection dissociation Exact sciences and technology Heat and mass transfer. Packings, plates Heat transfer packed-bed radiation Reaction kinetics shrinking sintering Sintering, pelletization, granulation Solar energy Solid-solid systems Validation studies Zinc zinc oxide Zinc oxides |
| title | Ablative heat transfer in a shrinking packed-bed of ZnO undergoing solar thermal dissociation |
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