Mass transfer into liquid falling film in straight and helically coiled tubes
Helically moving liquid films are principally used in many heat and mass transfer processes, which are usually practiced to minimize longitudinal dispersion, maximize secondary currents and provide compact spacing. In the present work, practical experiments are carried out to determine mass transfer...
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| Veröffentlicht in: | International journal of heat and mass transfer 2003-05, Vol.46 (10), p.1715-1724 |
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| container_title | International journal of heat and mass transfer |
| container_volume | 46 |
| creator | Hameed, Mohammed Salah Saleh Muhammed, Mehdi |
| description | Helically moving liquid films are principally used in many heat and mass transfer processes, which are usually practiced to minimize longitudinal dispersion, maximize secondary currents and provide compact spacing.
In the present work, practical experiments are carried out to determine mass transfer coefficients for thin films of liquid falling in case of straight and coiled tubes. The system used in the present investigation is the absorption of CO
2 into liquid films of distilled water, or ethyl alcohol (96.25%), or ethylene glycol of 12% or 5.2%. The obtained experimental results indicated higher mass transfer coefficient in the helically liquid film.
Empirical correlations are concluded by using dimensional analysis method. The correlations relate Sherwood number to the following dimensionless groups for laminar and turbulent regimes.
Sh=f(Re
f
,Sc,Ga
f
)
for
inclined
straight
tube
Sh=f(De
f
,Sc,Ga
f
)
for
helically
coiled
tube
where
De
f,
Ga
f and
Re
f are Dean, Gallileo and Reynolds numbers for flowing films, respectively. While
Sc and
Sh are Schmidt and Sherwood numbers. |
| doi_str_mv | 10.1016/S0017-9310(02)00500-8 |
| format | Article |
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In the present work, practical experiments are carried out to determine mass transfer coefficients for thin films of liquid falling in case of straight and coiled tubes. The system used in the present investigation is the absorption of CO
2 into liquid films of distilled water, or ethyl alcohol (96.25%), or ethylene glycol of 12% or 5.2%. The obtained experimental results indicated higher mass transfer coefficient in the helically liquid film.
Empirical correlations are concluded by using dimensional analysis method. The correlations relate Sherwood number to the following dimensionless groups for laminar and turbulent regimes.
Sh=f(Re
f
,Sc,Ga
f
)
for
inclined
straight
tube
Sh=f(De
f
,Sc,Ga
f
)
for
helically
coiled
tube
where
De
f,
Ga
f and
Re
f are Dean, Gallileo and Reynolds numbers for flowing films, respectively. While
Sc and
Sh are Schmidt and Sherwood numbers.</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/S0017-9310(02)00500-8</identifier><identifier>CODEN: IJHMAK</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Absorption, stripping ; Applied sciences ; Chemical engineering ; Exact sciences and technology ; Film Reynolds number ; Film Sherwood number ; Helically coil tubes ; Liquid falling film ; Mass transfer coefficient</subject><ispartof>International journal of heat and mass transfer, 2003-05, Vol.46 (10), p.1715-1724</ispartof><rights>2003</rights><rights>2003 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c405t-a00c71fe82a6ef6ff9387dae40b3ec5f3e2f2a4cf10ccf3d56abf55214b2db693</citedby><cites>FETCH-LOGICAL-c405t-a00c71fe82a6ef6ff9387dae40b3ec5f3e2f2a4cf10ccf3d56abf55214b2db693</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0017-9310(02)00500-8$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,778,782,3539,27907,27908,45978</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=14674631$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Hameed, Mohammed Salah</creatorcontrib><creatorcontrib>Saleh Muhammed, Mehdi</creatorcontrib><title>Mass transfer into liquid falling film in straight and helically coiled tubes</title><title>International journal of heat and mass transfer</title><description>Helically moving liquid films are principally used in many heat and mass transfer processes, which are usually practiced to minimize longitudinal dispersion, maximize secondary currents and provide compact spacing.
In the present work, practical experiments are carried out to determine mass transfer coefficients for thin films of liquid falling in case of straight and coiled tubes. The system used in the present investigation is the absorption of CO
2 into liquid films of distilled water, or ethyl alcohol (96.25%), or ethylene glycol of 12% or 5.2%. The obtained experimental results indicated higher mass transfer coefficient in the helically liquid film.
Empirical correlations are concluded by using dimensional analysis method. The correlations relate Sherwood number to the following dimensionless groups for laminar and turbulent regimes.
Sh=f(Re
f
,Sc,Ga
f
)
for
inclined
straight
tube
Sh=f(De
f
,Sc,Ga
f
)
for
helically
coiled
tube
where
De
f,
Ga
f and
Re
f are Dean, Gallileo and Reynolds numbers for flowing films, respectively. While
Sc and
Sh are Schmidt and Sherwood numbers.</description><subject>Absorption, stripping</subject><subject>Applied sciences</subject><subject>Chemical engineering</subject><subject>Exact sciences and technology</subject><subject>Film Reynolds number</subject><subject>Film Sherwood number</subject><subject>Helically coil tubes</subject><subject>Liquid falling film</subject><subject>Mass transfer coefficient</subject><issn>0017-9310</issn><issn>1879-2189</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><recordid>eNqFkE1PwzAMhiMEEmPwE5ByAcGh4KRtmp4QmviSNnEAzlGaOltQ125Ji7R_T7YhOHKyLD-vLT-EnDO4YcDE7RsAK5IyZXAF_BogB0jkARkxWZQJZ7I8JKNf5JichPC5bSETIzKb6RBo73UbLHrq2r6jjVsPrqZWN41r59S6ZhkHNETKzRc91W1NF9g4E4ENNZ1rsKb9UGE4JUcxFfDsp47Jx-PD--Q5mb4-vUzup4nJIO8TDWAKZlFyLdAKa8tUFrXGDKoUTW5T5JbrzFgGxti0zoWubJ5zllW8rkSZjsnlfu_Kd-sBQ6-WLhhsGt1iNwTFCykkL3kE8z1ofBeCR6tW3i213ygGaitP7eSprRkFXO3kKRlzFz8HdIhv2ujHuPAXzkSRiZRF7m7PYfz2y6FXwThsDdbOo-lV3bl_Ln0DeO-EeA</recordid><startdate>20030501</startdate><enddate>20030501</enddate><creator>Hameed, Mohammed Salah</creator><creator>Saleh Muhammed, Mehdi</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope></search><sort><creationdate>20030501</creationdate><title>Mass transfer into liquid falling film in straight and helically coiled tubes</title><author>Hameed, Mohammed Salah ; Saleh Muhammed, Mehdi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c405t-a00c71fe82a6ef6ff9387dae40b3ec5f3e2f2a4cf10ccf3d56abf55214b2db693</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Absorption, stripping</topic><topic>Applied sciences</topic><topic>Chemical engineering</topic><topic>Exact sciences and technology</topic><topic>Film Reynolds number</topic><topic>Film Sherwood number</topic><topic>Helically coil tubes</topic><topic>Liquid falling film</topic><topic>Mass transfer coefficient</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hameed, Mohammed Salah</creatorcontrib><creatorcontrib>Saleh Muhammed, Mehdi</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><jtitle>International journal of heat and mass transfer</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hameed, Mohammed Salah</au><au>Saleh Muhammed, Mehdi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mass transfer into liquid falling film in straight and helically coiled tubes</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2003-05-01</date><risdate>2003</risdate><volume>46</volume><issue>10</issue><spage>1715</spage><epage>1724</epage><pages>1715-1724</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>Helically moving liquid films are principally used in many heat and mass transfer processes, which are usually practiced to minimize longitudinal dispersion, maximize secondary currents and provide compact spacing.
In the present work, practical experiments are carried out to determine mass transfer coefficients for thin films of liquid falling in case of straight and coiled tubes. The system used in the present investigation is the absorption of CO
2 into liquid films of distilled water, or ethyl alcohol (96.25%), or ethylene glycol of 12% or 5.2%. The obtained experimental results indicated higher mass transfer coefficient in the helically liquid film.
Empirical correlations are concluded by using dimensional analysis method. The correlations relate Sherwood number to the following dimensionless groups for laminar and turbulent regimes.
Sh=f(Re
f
,Sc,Ga
f
)
for
inclined
straight
tube
Sh=f(De
f
,Sc,Ga
f
)
for
helically
coiled
tube
where
De
f,
Ga
f and
Re
f are Dean, Gallileo and Reynolds numbers for flowing films, respectively. While
Sc and
Sh are Schmidt and Sherwood numbers.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/S0017-9310(02)00500-8</doi><tpages>10</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0017-9310 |
| ispartof | International journal of heat and mass transfer, 2003-05, Vol.46 (10), p.1715-1724 |
| issn | 0017-9310 1879-2189 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_27868292 |
| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Absorption, stripping Applied sciences Chemical engineering Exact sciences and technology Film Reynolds number Film Sherwood number Helically coil tubes Liquid falling film Mass transfer coefficient |
| title | Mass transfer into liquid falling film in straight and helically coiled tubes |
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