Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507 heat transfer coefficients and pressure drop
This paper presents experimental heat transfer coefficients and pressure drop results obtained during the evaporation of pure R22 and the azeotropic mixture R507 (R125–R143a 50%/50% in weight). The test section was a smooth, horizontal, stainless steel tube (6 mm ID, 6 m length) uniformly heated by...
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| Veröffentlicht in: | Applied thermal engineering 2004-10, Vol.24 (14), p.2189-2206 |
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| creator | Greco, Adriana Vanoli, Giuseppe Peter |
| description | This paper presents experimental heat transfer coefficients and pressure drop results obtained during the evaporation of pure R22 and the azeotropic mixture R507 (R125–R143a 50%/50% in weight). The test section was a smooth, horizontal, stainless steel tube (6 mm ID, 6 m length) uniformly heated by Joule effect. The effects of heat flux, mass flux and evaporation pressure on the heat transfer coefficients have been investigated. Each working parameter was bound within the range: evaporating pressure 3–12 bar, refrigerant mass-flux 250–286 kg/m
2
s, heat flux 10.6–17.0 kW/m
2, respectively. Additionally the experimental results have been compared with existing correlations which characterize the evaporative heat transfer coefficient to assess the validity of these models for refrigerant mixtures. |
| doi_str_mv | 10.1016/j.applthermaleng.2004.02.006 |
| format | Article |
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2
s, heat flux 10.6–17.0 kW/m
2, respectively. Additionally the experimental results have been compared with existing correlations which characterize the evaporative heat transfer coefficient to assess the validity of these models for refrigerant mixtures.</description><identifier>ISSN: 1359-4311</identifier><identifier>DOI: 10.1016/j.applthermaleng.2004.02.006</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Convective boiling ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Heat transfer ; Heat transfer coefficients ; R22 ; R507 ; Refrigerants ; Refrigerating engineering ; Refrigerating engineering. Cryogenics. Food conservation ; Smooth tube ; Theoretical studies. Data and constants. Metering</subject><ispartof>Applied thermal engineering, 2004-10, Vol.24 (14), p.2189-2206</ispartof><rights>2004 Elsevier Ltd</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c389t-bc13b7b0b191108f0c297556a5785738b74fac65ade9768bd1f9bfad9827fcbc3</citedby><cites>FETCH-LOGICAL-c389t-bc13b7b0b191108f0c297556a5785738b74fac65ade9768bd1f9bfad9827fcbc3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1359431104000596$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16093354$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Greco, Adriana</creatorcontrib><creatorcontrib>Vanoli, Giuseppe Peter</creatorcontrib><title>Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507 heat transfer coefficients and pressure drop</title><title>Applied thermal engineering</title><description>This paper presents experimental heat transfer coefficients and pressure drop results obtained during the evaporation of pure R22 and the azeotropic mixture R507 (R125–R143a 50%/50% in weight). The test section was a smooth, horizontal, stainless steel tube (6 mm ID, 6 m length) uniformly heated by Joule effect. The effects of heat flux, mass flux and evaporation pressure on the heat transfer coefficients have been investigated. Each working parameter was bound within the range: evaporating pressure 3–12 bar, refrigerant mass-flux 250–286 kg/m
2
s, heat flux 10.6–17.0 kW/m
2, respectively. Additionally the experimental results have been compared with existing correlations which characterize the evaporative heat transfer coefficient to assess the validity of these models for refrigerant mixtures.</description><subject>Applied sciences</subject><subject>Convective boiling</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Heat transfer</subject><subject>Heat transfer coefficients</subject><subject>R22</subject><subject>R507</subject><subject>Refrigerants</subject><subject>Refrigerating engineering</subject><subject>Refrigerating engineering. Cryogenics. Food conservation</subject><subject>Smooth tube</subject><subject>Theoretical studies. Data and constants. Metering</subject><issn>1359-4311</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2004</creationdate><recordtype>article</recordtype><recordid>eNqNkE1r3DAURb1ooGna_6BF2924-rAsq2QTQpIWAoXQrsWT_JTR4LEcSRNIV_nplZmU0F1Xb3PuvbzTNB8ZbRll_ZddC8sylS2mPUw437ec0q6lvKW0f9OcMiH1phOMvW3e5byjlPFBdafN89UjLDFBCXEm0ZOEPoV7TDCXTMJMgOR9jGVLtjGF33EuMJFysPiVLAnH4P7m7jgnMI_kTlJFtgiFlNqRPSbiInofXMC1cmVqMudDQjKmuLxvTjxMGT-83LPm1_XVz8tvm9sfN98vL243Tgy6bKxjwipLLdOM0cFTx7WSsgepBqnEYFXnwfUSRtSqH-zIvLYeRj1w5Z114qz5fOxdUnw4YC5mH7LDaYIZ4yEbrgWXgxQVPD-CLsWcqw-zpLCH9GQYNatqszP_qjarakO5qapr_NPLDmQHk68WXMivHT3VQsiuctdHDuvTjwGTyasiV6UmdMWMMfzf4B-13aG-</recordid><startdate>20041001</startdate><enddate>20041001</enddate><creator>Greco, Adriana</creator><creator>Vanoli, Giuseppe Peter</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><scope>KR7</scope></search><sort><creationdate>20041001</creationdate><title>Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507 heat transfer coefficients and pressure drop</title><author>Greco, Adriana ; Vanoli, Giuseppe Peter</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c389t-bc13b7b0b191108f0c297556a5785738b74fac65ade9768bd1f9bfad9827fcbc3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Applied sciences</topic><topic>Convective boiling</topic><topic>Energy</topic><topic>Energy. Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Heat transfer</topic><topic>Heat transfer coefficients</topic><topic>R22</topic><topic>R507</topic><topic>Refrigerants</topic><topic>Refrigerating engineering</topic><topic>Refrigerating engineering. Cryogenics. Food conservation</topic><topic>Smooth tube</topic><topic>Theoretical studies. Data and constants. Metering</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Greco, Adriana</creatorcontrib><creatorcontrib>Vanoli, Giuseppe Peter</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Applied thermal engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Greco, Adriana</au><au>Vanoli, Giuseppe Peter</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507 heat transfer coefficients and pressure drop</atitle><jtitle>Applied thermal engineering</jtitle><date>2004-10-01</date><risdate>2004</risdate><volume>24</volume><issue>14</issue><spage>2189</spage><epage>2206</epage><pages>2189-2206</pages><issn>1359-4311</issn><abstract>This paper presents experimental heat transfer coefficients and pressure drop results obtained during the evaporation of pure R22 and the azeotropic mixture R507 (R125–R143a 50%/50% in weight). The test section was a smooth, horizontal, stainless steel tube (6 mm ID, 6 m length) uniformly heated by Joule effect. The effects of heat flux, mass flux and evaporation pressure on the heat transfer coefficients have been investigated. Each working parameter was bound within the range: evaporating pressure 3–12 bar, refrigerant mass-flux 250–286 kg/m
2
s, heat flux 10.6–17.0 kW/m
2, respectively. Additionally the experimental results have been compared with existing correlations which characterize the evaporative heat transfer coefficient to assess the validity of these models for refrigerant mixtures.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.applthermaleng.2004.02.006</doi><tpages>18</tpages></addata></record> |
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| ispartof | Applied thermal engineering, 2004-10, Vol.24 (14), p.2189-2206 |
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| source | Elsevier ScienceDirect Journals |
| subjects | Applied sciences Convective boiling Energy Energy. Thermal use of fuels Exact sciences and technology Heat transfer Heat transfer coefficients R22 R507 Refrigerants Refrigerating engineering Refrigerating engineering. Cryogenics. Food conservation Smooth tube Theoretical studies. Data and constants. Metering |
| title | Evaporation of refrigerants in a smooth horizontal tube: prediction of R22 and R507 heat transfer coefficients and pressure drop |
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