Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study
•A secondary structuring of the pillow-plate surface with dimples was suggested.•CFD-based analysis of the new structured surface was performed.•Dimples initiate regular disturbances of the turbulent boundary layer and hence improve mixing near the wall.•The thermo-hydraulic efficiency in the newly...
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| Veröffentlicht in: | Applied thermal engineering 2019-05, Vol.153, p.142-146 |
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| container_title | Applied thermal engineering |
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| creator | Piper, M. Zibart, A. Djakow, E. Springer, R. Homberg, W. Kenig, E.Y. |
| description | •A secondary structuring of the pillow-plate surface with dimples was suggested.•CFD-based analysis of the new structured surface was performed.•Dimples initiate regular disturbances of the turbulent boundary layer and hence improve mixing near the wall.•The thermo-hydraulic efficiency in the newly restructured pillow-plate channel is significantly increased.
Pillow-plate heat exchangers (PPHE) represent an innovative, fully welded plate-type heat exchanger. They consist of a stack of panels, which are characterized by “pillow-like” surface. The waviness of the channels enhances mixing in the fluid boundary layers, which consequently augments heat transfer. However, PPHE need further optimization in order to compete with corrugated plate heat exchangers with respect to compactness. In this study, a method to enhance heat transfer in PPHE is proposed, based on a surface modification of pillow plates by secondary dimple structures on their primary wavy surface. The new structured surface of the pillow plates promotes stronger near-wall mixing. |
| doi_str_mv | 10.1016/j.applthermaleng.2019.02.082 |
| format | Article |
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Pillow-plate heat exchangers (PPHE) represent an innovative, fully welded plate-type heat exchanger. They consist of a stack of panels, which are characterized by “pillow-like” surface. The waviness of the channels enhances mixing in the fluid boundary layers, which consequently augments heat transfer. However, PPHE need further optimization in order to compete with corrugated plate heat exchangers with respect to compactness. In this study, a method to enhance heat transfer in PPHE is proposed, based on a surface modification of pillow plates by secondary dimple structures on their primary wavy surface. The new structured surface of the pillow plates promotes stronger near-wall mixing.</description><identifier>ISSN: 1359-4311</identifier><identifier>EISSN: 1873-5606</identifier><identifier>DOI: 10.1016/j.applthermaleng.2019.02.082</identifier><language>eng</language><publisher>Oxford: Elsevier Ltd</publisher><subject>Boundary conditions ; Boundary layers ; Corrugated plates ; Dimples ; Dimpling ; Fluid boundaries ; Fluid dynamics ; Heat exchanger ; Heat exchangers ; Heat transfer ; Optimization ; Pillow plates ; Plate heat exchangers ; Plates (structural members) ; Surface tension ; Waviness</subject><ispartof>Applied thermal engineering, 2019-05, Vol.153, p.142-146</ispartof><rights>2019 Elsevier Ltd</rights><rights>Copyright Elsevier BV May 5, 2019</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c358t-5f80a9f9bbca49e4d234b1427fc1b1a10ef959faf1f9d457b7b712caf63b815a3</citedby><cites>FETCH-LOGICAL-c358t-5f80a9f9bbca49e4d234b1427fc1b1a10ef959faf1f9d457b7b712caf63b815a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S1359431118346362$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Piper, M.</creatorcontrib><creatorcontrib>Zibart, A.</creatorcontrib><creatorcontrib>Djakow, E.</creatorcontrib><creatorcontrib>Springer, R.</creatorcontrib><creatorcontrib>Homberg, W.</creatorcontrib><creatorcontrib>Kenig, E.Y.</creatorcontrib><title>Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study</title><title>Applied thermal engineering</title><description>•A secondary structuring of the pillow-plate surface with dimples was suggested.•CFD-based analysis of the new structured surface was performed.•Dimples initiate regular disturbances of the turbulent boundary layer and hence improve mixing near the wall.•The thermo-hydraulic efficiency in the newly restructured pillow-plate channel is significantly increased.
Pillow-plate heat exchangers (PPHE) represent an innovative, fully welded plate-type heat exchanger. They consist of a stack of panels, which are characterized by “pillow-like” surface. The waviness of the channels enhances mixing in the fluid boundary layers, which consequently augments heat transfer. However, PPHE need further optimization in order to compete with corrugated plate heat exchangers with respect to compactness. In this study, a method to enhance heat transfer in PPHE is proposed, based on a surface modification of pillow plates by secondary dimple structures on their primary wavy surface. The new structured surface of the pillow plates promotes stronger near-wall mixing.</description><subject>Boundary conditions</subject><subject>Boundary layers</subject><subject>Corrugated plates</subject><subject>Dimples</subject><subject>Dimpling</subject><subject>Fluid boundaries</subject><subject>Fluid dynamics</subject><subject>Heat exchanger</subject><subject>Heat exchangers</subject><subject>Heat transfer</subject><subject>Optimization</subject><subject>Pillow plates</subject><subject>Plate heat exchangers</subject><subject>Plates (structural members)</subject><subject>Surface tension</subject><subject>Waviness</subject><issn>1359-4311</issn><issn>1873-5606</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNqNkMtOwzAQRSMEEqXwD5Zgm-BHXkZsqooCUiU2sLYcZ9w4ygvbofTvcVU27NAsZhbnzmhOFN0RnBBM8vs2kdPU-QZsLzsYdgnFhCeYJrikZ9GClAWLsxzn52FmGY9TRshldOVcizGhZZEuouoFpEfeysFpsAiGRg4Kehg8MgOaTNeN-3jqpAfUHEn4VoHYgXVob3yDatNPHdTIzVZLBe4BrdAw92CNkh1yfq4P19GFlp2Dm9--jD42T-_rl3j79vy6Xm1jxbLSx5kuseSaV5WSKYe0piytSEoLrUhFJMGgeca11ETzOs2KKhShSuqcVSXJJFtGt6e9kx0_Z3BetONsh3BSUMp4zoqC8UA9nihlR-csaDFZ00t7EASLo1XRir9WxdGqwFQEqyG-OcUhfPJlwAqnDARltbGgvKhH879FP7NEi38</recordid><startdate>20190505</startdate><enddate>20190505</enddate><creator>Piper, M.</creator><creator>Zibart, A.</creator><creator>Djakow, E.</creator><creator>Springer, R.</creator><creator>Homberg, W.</creator><creator>Kenig, E.Y.</creator><general>Elsevier Ltd</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TB</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope></search><sort><creationdate>20190505</creationdate><title>Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study</title><author>Piper, M. ; Zibart, A. ; Djakow, E. ; Springer, R. ; Homberg, W. ; Kenig, E.Y.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c358t-5f80a9f9bbca49e4d234b1427fc1b1a10ef959faf1f9d457b7b712caf63b815a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Boundary conditions</topic><topic>Boundary layers</topic><topic>Corrugated plates</topic><topic>Dimples</topic><topic>Dimpling</topic><topic>Fluid boundaries</topic><topic>Fluid dynamics</topic><topic>Heat exchanger</topic><topic>Heat exchangers</topic><topic>Heat transfer</topic><topic>Optimization</topic><topic>Pillow plates</topic><topic>Plate heat exchangers</topic><topic>Plates (structural members)</topic><topic>Surface tension</topic><topic>Waviness</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Piper, M.</creatorcontrib><creatorcontrib>Zibart, A.</creatorcontrib><creatorcontrib>Djakow, E.</creatorcontrib><creatorcontrib>Springer, R.</creatorcontrib><creatorcontrib>Homberg, W.</creatorcontrib><creatorcontrib>Kenig, E.Y.</creatorcontrib><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>Piper, M.</au><au>Zibart, A.</au><au>Djakow, E.</au><au>Springer, R.</au><au>Homberg, W.</au><au>Kenig, E.Y.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study</atitle><jtitle>Applied thermal engineering</jtitle><date>2019-05-05</date><risdate>2019</risdate><volume>153</volume><spage>142</spage><epage>146</epage><pages>142-146</pages><issn>1359-4311</issn><eissn>1873-5606</eissn><abstract>•A secondary structuring of the pillow-plate surface with dimples was suggested.•CFD-based analysis of the new structured surface was performed.•Dimples initiate regular disturbances of the turbulent boundary layer and hence improve mixing near the wall.•The thermo-hydraulic efficiency in the newly restructured pillow-plate channel is significantly increased.
Pillow-plate heat exchangers (PPHE) represent an innovative, fully welded plate-type heat exchanger. They consist of a stack of panels, which are characterized by “pillow-like” surface. The waviness of the channels enhances mixing in the fluid boundary layers, which consequently augments heat transfer. However, PPHE need further optimization in order to compete with corrugated plate heat exchangers with respect to compactness. In this study, a method to enhance heat transfer in PPHE is proposed, based on a surface modification of pillow plates by secondary dimple structures on their primary wavy surface. The new structured surface of the pillow plates promotes stronger near-wall mixing.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.applthermaleng.2019.02.082</doi><tpages>5</tpages></addata></record> |
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| ispartof | Applied thermal engineering, 2019-05, Vol.153, p.142-146 |
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| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Boundary conditions Boundary layers Corrugated plates Dimples Dimpling Fluid boundaries Fluid dynamics Heat exchanger Heat exchangers Heat transfer Optimization Pillow plates Plate heat exchangers Plates (structural members) Surface tension Waviness |
| title | Heat transfer enhancement in pillow-plate heat exchangers with dimpled surfaces: A numerical study |
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