Pipe diameter effect on flow and heat transfer characteristics of ammonia alum hydrate slurries with additives
In this study, pipe diameter effect on flow and heat transfer characteristics of ammonia aluminium sulfate dodecahydrate (ammonia alum hydrate: AlNH4(SO4)2·12H2O) slurries with drag reducing surfactants and poly(vinyl alcohol) was investigated. Pressure loss and heat‐transfer coefficients of ammonia...
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| Veröffentlicht in: | AIChE journal 2020-02, Vol.66 (2), p.n/a |
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| creator | Nakamura, Kohei Ina, Takashi Hidema, Ruri Suzuki, Hiroshi Komoda, Yoshiyuki |
| description | In this study, pipe diameter effect on flow and heat transfer characteristics of ammonia aluminium sulfate dodecahydrate (ammonia alum hydrate: AlNH4(SO4)2·12H2O) slurries with drag reducing surfactants and poly(vinyl alcohol) was investigated. Pressure loss and heat‐transfer coefficients of ammonia alum hydrate solutions and slurries were measured with double‐pipe heat exchangers with different inner tube diameters. Measurement results indicated that pseudo‐laminarization by the surfactant caused drag‐reduction effect and its saturated magnitude was affected by inner tube diameters. Pseudo‐laminarization also produced heat transfer reduction effect and its magnitude was not affected by inner tube diameters. Calculation results of Colburn's j‐factor divided by friction factors indicated that heat transportation efficiency of the hydrate solutions/slurries with additives was increased due to the contribution of drag‐reduction effect. |
| doi_str_mv | 10.1002/aic.16780 |
| format | Article |
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Pressure loss and heat‐transfer coefficients of ammonia alum hydrate solutions and slurries were measured with double‐pipe heat exchangers with different inner tube diameters. Measurement results indicated that pseudo‐laminarization by the surfactant caused drag‐reduction effect and its saturated magnitude was affected by inner tube diameters. Pseudo‐laminarization also produced heat transfer reduction effect and its magnitude was not affected by inner tube diameters. Calculation results of Colburn's j‐factor divided by friction factors indicated that heat transportation efficiency of the hydrate solutions/slurries with additives was increased due to the contribution of drag‐reduction effect.</description><identifier>ISSN: 0001-1541</identifier><identifier>EISSN: 1547-5905</identifier><identifier>DOI: 10.1002/aic.16780</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Additives ; Alum ; Aluminum ; Ammonia ; Diameters ; Drag ; Drag reduction ; Heat exchangers ; Heat transfer ; inorganic hydrate ; latent heat ; Mathematical analysis ; phase change material ; Pipes ; Pollutants ; Polyvinyl alcohol ; Pressure loss ; Slurries ; Sulfates ; Surfactants ; Transportation ; two‐phase flow</subject><ispartof>AIChE journal, 2020-02, Vol.66 (2), p.n/a</ispartof><rights>2019 American Institute of Chemical Engineers</rights><rights>2020 American Institute of Chemical Engineers</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3340-e816a160cf7599f79f7a07bcdc994ad37b0d002ddb15db867f283d0baf57c7363</citedby><cites>FETCH-LOGICAL-c3340-e816a160cf7599f79f7a07bcdc994ad37b0d002ddb15db867f283d0baf57c7363</cites><orcidid>0000-0001-8588-4893</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Faic.16780$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Faic.16780$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Nakamura, Kohei</creatorcontrib><creatorcontrib>Ina, Takashi</creatorcontrib><creatorcontrib>Hidema, Ruri</creatorcontrib><creatorcontrib>Suzuki, Hiroshi</creatorcontrib><creatorcontrib>Komoda, Yoshiyuki</creatorcontrib><title>Pipe diameter effect on flow and heat transfer characteristics of ammonia alum hydrate slurries with additives</title><title>AIChE journal</title><description>In this study, pipe diameter effect on flow and heat transfer characteristics of ammonia aluminium sulfate dodecahydrate (ammonia alum hydrate: AlNH4(SO4)2·12H2O) slurries with drag reducing surfactants and poly(vinyl alcohol) was investigated. Pressure loss and heat‐transfer coefficients of ammonia alum hydrate solutions and slurries were measured with double‐pipe heat exchangers with different inner tube diameters. Measurement results indicated that pseudo‐laminarization by the surfactant caused drag‐reduction effect and its saturated magnitude was affected by inner tube diameters. Pseudo‐laminarization also produced heat transfer reduction effect and its magnitude was not affected by inner tube diameters. Calculation results of Colburn's j‐factor divided by friction factors indicated that heat transportation efficiency of the hydrate solutions/slurries with additives was increased due to the contribution of drag‐reduction effect.</description><subject>Additives</subject><subject>Alum</subject><subject>Aluminum</subject><subject>Ammonia</subject><subject>Diameters</subject><subject>Drag</subject><subject>Drag reduction</subject><subject>Heat exchangers</subject><subject>Heat transfer</subject><subject>inorganic hydrate</subject><subject>latent heat</subject><subject>Mathematical analysis</subject><subject>phase change material</subject><subject>Pipes</subject><subject>Pollutants</subject><subject>Polyvinyl alcohol</subject><subject>Pressure loss</subject><subject>Slurries</subject><subject>Sulfates</subject><subject>Surfactants</subject><subject>Transportation</subject><subject>two‐phase flow</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLxDAQgIMouK4e_AcBTx66Jk2btMdl8bGwoAc9h2keNEsfa5K67L83Wq_CwDDDNzPMh9AtJStKSP4ATq0oFxU5QwtaFiIra1KeowUhhGapQS_RVQj7VOWiyhdoeHMHg7WD3kTjsbHWqIjHAdtuPGIYNG4NRBw9DMEmQLXgQSXUhehUwKPF0Pfj4ABDN_W4PWkP0eDQTd47E_DRxRaD1i66LxOu0YWFLpibv7xEH0-P75uXbPf6vN2sd5lirCCZqSgHyomyoqxrK1IAEY3Sqq4L0Ew0RKdvtW5oqZuKC5tXTJMGbCmUYJwt0d289-DHz8mEKPfj5Id0UuaMsbLgXOSJup8p5ccQvLHy4F0P_iQpkT86ZdIpf3Um9mFmj64zp_9Bud5u5olvdB94BA</recordid><startdate>202002</startdate><enddate>202002</enddate><creator>Nakamura, Kohei</creator><creator>Ina, Takashi</creator><creator>Hidema, Ruri</creator><creator>Suzuki, Hiroshi</creator><creator>Komoda, Yoshiyuki</creator><general>John Wiley & Sons, Inc</general><general>American Institute of Chemical Engineers</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>L7M</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0001-8588-4893</orcidid></search><sort><creationdate>202002</creationdate><title>Pipe diameter effect on flow and heat transfer characteristics of ammonia alum hydrate slurries with additives</title><author>Nakamura, Kohei ; Ina, Takashi ; Hidema, Ruri ; Suzuki, Hiroshi ; Komoda, Yoshiyuki</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3340-e816a160cf7599f79f7a07bcdc994ad37b0d002ddb15db867f283d0baf57c7363</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Additives</topic><topic>Alum</topic><topic>Aluminum</topic><topic>Ammonia</topic><topic>Diameters</topic><topic>Drag</topic><topic>Drag reduction</topic><topic>Heat exchangers</topic><topic>Heat transfer</topic><topic>inorganic hydrate</topic><topic>latent heat</topic><topic>Mathematical analysis</topic><topic>phase change material</topic><topic>Pipes</topic><topic>Pollutants</topic><topic>Polyvinyl alcohol</topic><topic>Pressure loss</topic><topic>Slurries</topic><topic>Sulfates</topic><topic>Surfactants</topic><topic>Transportation</topic><topic>two‐phase flow</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Nakamura, Kohei</creatorcontrib><creatorcontrib>Ina, Takashi</creatorcontrib><creatorcontrib>Hidema, Ruri</creatorcontrib><creatorcontrib>Suzuki, Hiroshi</creatorcontrib><creatorcontrib>Komoda, Yoshiyuki</creatorcontrib><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>Nakamura, Kohei</au><au>Ina, Takashi</au><au>Hidema, Ruri</au><au>Suzuki, Hiroshi</au><au>Komoda, Yoshiyuki</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Pipe diameter effect on flow and heat transfer characteristics of ammonia alum hydrate slurries with additives</atitle><jtitle>AIChE journal</jtitle><date>2020-02</date><risdate>2020</risdate><volume>66</volume><issue>2</issue><epage>n/a</epage><issn>0001-1541</issn><eissn>1547-5905</eissn><abstract>In this study, pipe diameter effect on flow and heat transfer characteristics of ammonia aluminium sulfate dodecahydrate (ammonia alum hydrate: AlNH4(SO4)2·12H2O) slurries with drag reducing surfactants and poly(vinyl alcohol) was investigated. Pressure loss and heat‐transfer coefficients of ammonia alum hydrate solutions and slurries were measured with double‐pipe heat exchangers with different inner tube diameters. Measurement results indicated that pseudo‐laminarization by the surfactant caused drag‐reduction effect and its saturated magnitude was affected by inner tube diameters. Pseudo‐laminarization also produced heat transfer reduction effect and its magnitude was not affected by inner tube diameters. Calculation results of Colburn's j‐factor divided by friction factors indicated that heat transportation efficiency of the hydrate solutions/slurries with additives was increased due to the contribution of drag‐reduction effect.</abstract><cop>Hoboken, USA</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/aic.16780</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0001-8588-4893</orcidid></addata></record> |
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| subjects | Additives Alum Aluminum Ammonia Diameters Drag Drag reduction Heat exchangers Heat transfer inorganic hydrate latent heat Mathematical analysis phase change material Pipes Pollutants Polyvinyl alcohol Pressure loss Slurries Sulfates Surfactants Transportation two‐phase flow |
| title | Pipe diameter effect on flow and heat transfer characteristics of ammonia alum hydrate slurries with additives |
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