Frost formation on a plate with different surface hydrophilicity
The objectives of this study are to develop frost maps for two different surfaces having two different hydrophilic characteristics and to find ambient conditions associated with the formation of frost structures. Test samples with two different surfaces having dynamic contact angle (DCA) of 23° and...
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| Veröffentlicht in: | International journal of heat and mass transfer 2004-10, Vol.47 (22), p.4881-4893 |
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| container_title | International journal of heat and mass transfer |
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| creator | Lee, Hyunuk Shin, Jongmin Ha, Samchul Choi, Bongjun Lee, Jaekeun |
| description | The objectives of this study are to develop frost maps for two different surfaces having two different hydrophilic characteristics and to find ambient conditions associated with the formation of frost structures. Test samples with two different surfaces having dynamic contact angle (DCA) of 23° and 88° were installed in a wind tunnel and exposed to a humid airflow. Frost structure is observed with a visualization system in the operating conditions of household refrigerator: airflow temperature in the range of +10–20 °C, humidity in the range of 2.64–9.36 g/kg
′, Reynolds number in the range of 7000–17,000 and cold plate temperature in the range of −11.6 to −28.4 °C. As results of this study, frost structures are classified and frost maps are proposed for two different surface hydrophilicities. Surface with low DCA (23°) shows lower frost thickness and higher frost density than that with high DCA (88°). It was found that frost structures on surfaces with different DCA are similar. However, low DCA surface at low humidity provides 20–30% denser frost formation due to the shift of areas with different structures. |
| doi_str_mv | 10.1016/j.ijheatmasstransfer.2004.05.021 |
| format | Article |
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′, Reynolds number in the range of 7000–17,000 and cold plate temperature in the range of −11.6 to −28.4 °C. As results of this study, frost structures are classified and frost maps are proposed for two different surface hydrophilicities. Surface with low DCA (23°) shows lower frost thickness and higher frost density than that with high DCA (88°). It was found that frost structures on surfaces with different DCA are similar. However, low DCA surface at low humidity provides 20–30% denser frost formation due to the shift of areas with different structures.</description><identifier>ISSN: 0017-9310</identifier><identifier>EISSN: 1879-2189</identifier><identifier>DOI: 10.1016/j.ijheatmasstransfer.2004.05.021</identifier><identifier>CODEN: IJHMAK</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Applied sciences ; Devices using thermal energy ; Dynamic contact angle ; Energy ; Energy. Thermal use of fuels ; Exact sciences and technology ; Fin-and-tube heat exchanger ; Frost ; Heat exchangers (included heat transformers, condensers, cooling towers) ; Hydrophilic ; Hydrophobic ; Refrigerating engineering ; Refrigerating engineering. Cryogenics. Food conservation ; Surface characteristics ; Techniques. Materials</subject><ispartof>International journal of heat and mass transfer, 2004-10, Vol.47 (22), p.4881-4893</ispartof><rights>2004 Elsevier Ltd</rights><rights>2004 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c401t-4b928f9e827373cc7b90aecb0845dbb32f79b23b1cca5c227eb882b2098d3063</citedby><cites>FETCH-LOGICAL-c401t-4b928f9e827373cc7b90aecb0845dbb32f79b23b1cca5c227eb882b2098d3063</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.2004.05.021$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=16098775$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Lee, Hyunuk</creatorcontrib><creatorcontrib>Shin, Jongmin</creatorcontrib><creatorcontrib>Ha, Samchul</creatorcontrib><creatorcontrib>Choi, Bongjun</creatorcontrib><creatorcontrib>Lee, Jaekeun</creatorcontrib><title>Frost formation on a plate with different surface hydrophilicity</title><title>International journal of heat and mass transfer</title><description>The objectives of this study are to develop frost maps for two different surfaces having two different hydrophilic characteristics and to find ambient conditions associated with the formation of frost structures. Test samples with two different surfaces having dynamic contact angle (DCA) of 23° and 88° were installed in a wind tunnel and exposed to a humid airflow. Frost structure is observed with a visualization system in the operating conditions of household refrigerator: airflow temperature in the range of +10–20 °C, humidity in the range of 2.64–9.36 g/kg
′, Reynolds number in the range of 7000–17,000 and cold plate temperature in the range of −11.6 to −28.4 °C. As results of this study, frost structures are classified and frost maps are proposed for two different surface hydrophilicities. Surface with low DCA (23°) shows lower frost thickness and higher frost density than that with high DCA (88°). It was found that frost structures on surfaces with different DCA are similar. However, low DCA surface at low humidity provides 20–30% denser frost formation due to the shift of areas with different structures.</description><subject>Applied sciences</subject><subject>Devices using thermal energy</subject><subject>Dynamic contact angle</subject><subject>Energy</subject><subject>Energy. Thermal use of fuels</subject><subject>Exact sciences and technology</subject><subject>Fin-and-tube heat exchanger</subject><subject>Frost</subject><subject>Heat exchangers (included heat transformers, condensers, cooling towers)</subject><subject>Hydrophilic</subject><subject>Hydrophobic</subject><subject>Refrigerating engineering</subject><subject>Refrigerating engineering. Cryogenics. Food conservation</subject><subject>Surface characteristics</subject><subject>Techniques. 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Thermal use of fuels</topic><topic>Exact sciences and technology</topic><topic>Fin-and-tube heat exchanger</topic><topic>Frost</topic><topic>Heat exchangers (included heat transformers, condensers, cooling towers)</topic><topic>Hydrophilic</topic><topic>Hydrophobic</topic><topic>Refrigerating engineering</topic><topic>Refrigerating engineering. Cryogenics. Food conservation</topic><topic>Surface characteristics</topic><topic>Techniques. Materials</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lee, Hyunuk</creatorcontrib><creatorcontrib>Shin, Jongmin</creatorcontrib><creatorcontrib>Ha, Samchul</creatorcontrib><creatorcontrib>Choi, Bongjun</creatorcontrib><creatorcontrib>Lee, Jaekeun</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>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>Lee, Hyunuk</au><au>Shin, Jongmin</au><au>Ha, Samchul</au><au>Choi, Bongjun</au><au>Lee, Jaekeun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Frost formation on a plate with different surface hydrophilicity</atitle><jtitle>International journal of heat and mass transfer</jtitle><date>2004-10-01</date><risdate>2004</risdate><volume>47</volume><issue>22</issue><spage>4881</spage><epage>4893</epage><pages>4881-4893</pages><issn>0017-9310</issn><eissn>1879-2189</eissn><coden>IJHMAK</coden><abstract>The objectives of this study are to develop frost maps for two different surfaces having two different hydrophilic characteristics and to find ambient conditions associated with the formation of frost structures. Test samples with two different surfaces having dynamic contact angle (DCA) of 23° and 88° were installed in a wind tunnel and exposed to a humid airflow. Frost structure is observed with a visualization system in the operating conditions of household refrigerator: airflow temperature in the range of +10–20 °C, humidity in the range of 2.64–9.36 g/kg
′, Reynolds number in the range of 7000–17,000 and cold plate temperature in the range of −11.6 to −28.4 °C. As results of this study, frost structures are classified and frost maps are proposed for two different surface hydrophilicities. Surface with low DCA (23°) shows lower frost thickness and higher frost density than that with high DCA (88°). It was found that frost structures on surfaces with different DCA are similar. However, low DCA surface at low humidity provides 20–30% denser frost formation due to the shift of areas with different structures.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.ijheatmasstransfer.2004.05.021</doi><tpages>13</tpages></addata></record> |
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| identifier | ISSN: 0017-9310 |
| ispartof | International journal of heat and mass transfer, 2004-10, Vol.47 (22), p.4881-4893 |
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| source | Elsevier ScienceDirect Journals Complete |
| subjects | Applied sciences Devices using thermal energy Dynamic contact angle Energy Energy. Thermal use of fuels Exact sciences and technology Fin-and-tube heat exchanger Frost Heat exchangers (included heat transformers, condensers, cooling towers) Hydrophilic Hydrophobic Refrigerating engineering Refrigerating engineering. Cryogenics. Food conservation Surface characteristics Techniques. Materials |
| title | Frost formation on a plate with different surface hydrophilicity |
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