Condensation heat transfer in rectangular microscale geometries
•Condensation heat transfer at microscales (100
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| Veröffentlicht in: | International journal of heat and mass transfer 2016-09, Vol.100, p.98-110 |
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| container_title | International journal of heat and mass transfer |
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| creator | Garimella, Srinivas Agarwal, Akhil Fronk, Brian M. |
| description | •Condensation heat transfer at microscales (100 |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2016.03.086 |
| format | Article |
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Heat transfer coefficients during condensation of refrigerant R134a in small hydraulic diameter (100<Dh<160μm) rectangular (1<AR<4) channels are presented. A novel technique to accurately determine condensation heat duty and heat transfer coefficient in such microscale geometries at small Δx is used. Models in the literature that were developed for larger tubes are shown to under predict the data. A new model that accounts for the flow mechanisms during condensation at such small scales, and takes into account the effect of G, x, Tsat, Dh and AR, is developed. The model predicts 94% of the data in the intermittent, transition and annular flow regimes within ±25%.]]></description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2016.03.086</identifier><language>eng</language><publisher>Elsevier Ltd</publisher><subject>Annular ; Annular flow ; Channels ; Computational fluid dynamics ; Condensation ; Heat transfer ; Heat transfer coefficients ; Intermittent ; Mass transfer ; Mathematical models ; Microchannel ; Small scale</subject><ispartof>International journal of heat and mass transfer, 2016-09, Vol.100, p.98-110</ispartof><rights>2016 Elsevier Ltd</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c375t-3fd94830e3bf1b2a948762081c471afb514d2586ee9a54a4fb8586f14f7b63e03</citedby><cites>FETCH-LOGICAL-c375t-3fd94830e3bf1b2a948762081c471afb514d2586ee9a54a4fb8586f14f7b63e03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ijheatmasstransfer.2016.03.086$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3548,27923,27924,45994</link.rule.ids></links><search><creatorcontrib>Garimella, Srinivas</creatorcontrib><creatorcontrib>Agarwal, Akhil</creatorcontrib><creatorcontrib>Fronk, Brian M.</creatorcontrib><title>Condensation heat transfer in rectangular microscale geometries</title><title>International journal of heat and mass transfer</title><description><![CDATA[•Condensation heat transfer at microscales (100<Dh<160μm; 1<AR<4) measured.•Unified model for intermittent and annular flow heat transfer developed.•Effects of saturation temperature, hydraulic diameter, and aspect ratio elucidated.•The model predicts 94% of the data within ±25%.
Heat transfer coefficients during condensation of refrigerant R134a in small hydraulic diameter (100<Dh<160μm) rectangular (1<AR<4) channels are presented. A novel technique to accurately determine condensation heat duty and heat transfer coefficient in such microscale geometries at small Δx is used. Models in the literature that were developed for larger tubes are shown to under predict the data. A new model that accounts for the flow mechanisms during condensation at such small scales, and takes into account the effect of G, x, Tsat, Dh and AR, is developed. The model predicts 94% of the data in the intermittent, transition and annular flow regimes within ±25%.]]></description><subject>Annular</subject><subject>Annular flow</subject><subject>Channels</subject><subject>Computational fluid dynamics</subject><subject>Condensation</subject><subject>Heat transfer</subject><subject>Heat transfer coefficients</subject><subject>Intermittent</subject><subject>Mass transfer</subject><subject>Mathematical models</subject><subject>Microchannel</subject><subject>Small scale</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqNkLFOwzAQhi0EEqXwDhm7JPhiJ3EmQBUUUCUWmC3HORdHiVPsFIm3x1FhYmE6_bpfn-4-QlZAM6BQXneZ7d5RTYMKYfLKBYM-y-MmoyyjojwhCxBVneYg6lOyoBSqtGZAz8lFCN0cKS8X5GY9uhZdUJMdXTIDk19aYl3iUU_K7Q698slgtR-DVj0mOxwHnLzFcEnOjOoDXv3MJXl7uH9dP6bbl83T-m6balYVU8pMW3PBKLLGQJOrGKoypwI0r0CZpgDe5oUoEWtVcMVNI2IywE3VlAwpW5LVkbv348cBwyQHGzT2vXI4HoIEkRe8yosaYvX2WJ3PDR6N3Hs7KP8lgcrZnezkX3dydicpk9FdRDwfERhf-rRxG7RFp7G1sxHZjvb_sG-YA4Uq</recordid><startdate>201609</startdate><enddate>201609</enddate><creator>Garimella, Srinivas</creator><creator>Agarwal, Akhil</creator><creator>Fronk, Brian M.</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>201609</creationdate><title>Condensation heat transfer in rectangular microscale geometries</title><author>Garimella, Srinivas ; Agarwal, Akhil ; Fronk, Brian M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c375t-3fd94830e3bf1b2a948762081c471afb514d2586ee9a54a4fb8586f14f7b63e03</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Annular</topic><topic>Annular flow</topic><topic>Channels</topic><topic>Computational fluid dynamics</topic><topic>Condensation</topic><topic>Heat transfer</topic><topic>Heat transfer coefficients</topic><topic>Intermittent</topic><topic>Mass transfer</topic><topic>Mathematical models</topic><topic>Microchannel</topic><topic>Small scale</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Garimella, Srinivas</creatorcontrib><creatorcontrib>Agarwal, Akhil</creatorcontrib><creatorcontrib>Fronk, Brian M.</creatorcontrib><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Garimella, Srinivas</au><au>Agarwal, Akhil</au><au>Fronk, Brian M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Condensation heat transfer in rectangular microscale geometries</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2016-09</date><risdate>2016</risdate><volume>100</volume><spage>98</spage><epage>110</epage><pages>98-110</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><abstract><![CDATA[•Condensation heat transfer at microscales (100<Dh<160μm; 1<AR<4) measured.•Unified model for intermittent and annular flow heat transfer developed.•Effects of saturation temperature, hydraulic diameter, and aspect ratio elucidated.•The model predicts 94% of the data within ±25%.
Heat transfer coefficients during condensation of refrigerant R134a in small hydraulic diameter (100<Dh<160μm) rectangular (1<AR<4) channels are presented. A novel technique to accurately determine condensation heat duty and heat transfer coefficient in such microscale geometries at small Δx is used. Models in the literature that were developed for larger tubes are shown to under predict the data. A new model that accounts for the flow mechanisms during condensation at such small scales, and takes into account the effect of G, x, Tsat, Dh and AR, is developed. The model predicts 94% of the data in the intermittent, transition and annular flow regimes within ±25%.]]></abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2016.03.086</doi><tpages>13</tpages></addata></record> |
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| identifier | ISSN: 0017-9310 |
| ispartof | International journal of heat and mass transfer, 2016-09, Vol.100, p.98-110 |
| issn | 0017-9310 1879-2189 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Annular Annular flow Channels Computational fluid dynamics Condensation Heat transfer Heat transfer coefficients Intermittent Mass transfer Mathematical models Microchannel Small scale |
| title | Condensation heat transfer in rectangular microscale geometries |
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