Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel
Experiments in microchannel heat sink were carried that examine the deionized water two-phase boiling heat transfer. The heat sink consisted of a single microchannel having 300μm wide nominal dimensions and 300μm height (hydraulic diameter of 300μm). The heat sink formed of oxygen-free copper with 7...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2019-10-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_169052_3e205b0521c2ec63d812ff0c23a7f25f.pdf |
| _version_ | 1797326047164760064 |
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| author | Suha mohammed Ekhlas Fayyadh |
| author_facet | Suha mohammed Ekhlas Fayyadh |
| author_sort | Suha mohammed |
| collection | DOAJ |
| description | Experiments in microchannel heat sink were carried that examine the deionized water two-phase boiling heat transfer. The heat sink consisted of a single microchannel having 300μm wide nominal dimensions and 300μm height (hydraulic diameter of 300μm). The heat sink formed of oxygen-free copper with 72mm length and 12mm width. Experimental operation conditions spanned the heat flux (78-800) kW/m2, mass flux (1700 and 2100) kg/m2.s at 31K subcooled inlet temperature. The boiling heat transfer coefficient is measured, and compared with existing correlations. The results show that higher mass flux leads to a higher boiling heat transfer coefficient and the dominants mechanism is convective boiling. In addition, it was found that an existing correlation provides a satisfactory prediction of the heat transfer coefficient. |
| first_indexed | 2024-03-08T06:18:56Z |
| format | Article |
| id | doaj.art-ec106419c0f642fea87f30f22a594aa4 |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T06:18:56Z |
| publishDate | 2019-10-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-ec106419c0f642fea87f30f22a594aa42024-02-04T17:12:54ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582019-10-013710A40841510.30684/etj.37.10A.5169052Experimental Investigation of Sub-Cooled Flow Boiling in Metallic MicrochannelSuha mohammed0Ekhlas Fayyadh1Mechanical Engineering Department, University of Technology - IraqMechanical Engineering Department, Baghdad,IraqExperiments in microchannel heat sink were carried that examine the deionized water two-phase boiling heat transfer. The heat sink consisted of a single microchannel having 300μm wide nominal dimensions and 300μm height (hydraulic diameter of 300μm). The heat sink formed of oxygen-free copper with 72mm length and 12mm width. Experimental operation conditions spanned the heat flux (78-800) kW/m2, mass flux (1700 and 2100) kg/m2.s at 31K subcooled inlet temperature. The boiling heat transfer coefficient is measured, and compared with existing correlations. The results show that higher mass flux leads to a higher boiling heat transfer coefficient and the dominants mechanism is convective boiling. In addition, it was found that an existing correlation provides a satisfactory prediction of the heat transfer coefficient.https://etj.uotechnology.edu.iq/article_169052_3e205b0521c2ec63d812ff0c23a7f25f.pdfmetallic microchanneltwo phase flowsubcooled flow boilingheat transfer coefficient |
| spellingShingle | Suha mohammed Ekhlas Fayyadh Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel Engineering and Technology Journal metallic microchannel two phase flow subcooled flow boiling heat transfer coefficient |
| title | Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel |
| title_full | Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel |
| title_fullStr | Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel |
| title_full_unstemmed | Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel |
| title_short | Experimental Investigation of Sub-Cooled Flow Boiling in Metallic Microchannel |
| title_sort | experimental investigation of sub cooled flow boiling in metallic microchannel |
| topic | metallic microchannel two phase flow subcooled flow boiling heat transfer coefficient |
| url | https://etj.uotechnology.edu.iq/article_169052_3e205b0521c2ec63d812ff0c23a7f25f.pdf |
| work_keys_str_mv | AT suhamohammed experimentalinvestigationofsubcooledflowboilinginmetallicmicrochannel AT ekhlasfayyadh experimentalinvestigationofsubcooledflowboilinginmetallicmicrochannel |