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DC Field | Value | Language |
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dc.citation.endPage | 940 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 928 | - |
dc.citation.title | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | - |
dc.citation.volume | 48 | - |
dc.contributor.author | Lee, Jaeseon | - |
dc.contributor.author | Mudawar, Issam | - |
dc.date.accessioned | 2023-12-22T10:38:14Z | - |
dc.date.available | 2023-12-22T10:38:14Z | - |
dc.date.created | 2016-11-30 | - |
dc.date.issued | 2005-02 | - |
dc.description.abstract | Two-phase pressure drop was measured across a micro-channel heat sink that served as an evaporator in a refrigeration cycle. The micro-channels were formed by machining 231 mum wide x 713 mum deep grooves into the surface of a copper block. Experiments were performed with refrigerant R I 34a that spanned the following conditions: inlet pressure of Pi,, = 1.44-6.60 bar, mass velocity of G = 127-654 kg/m(2)s, inlet quality Of X,,in = 0.001-0.25, outlet quality of x(e,out) = 0.49-superheat, and heat flux of q(") = 31.6-93.8W/cm(2). Predictions of the homogeneous equilibrium flow model and prior separated flow models and correlations yielded relatively poor predictions of pressure drop. A new correlation scheme is suggested that incorporates the effect of liquid viscosity and surface tension in the separated flow model's two-phase pressure drop multiplier. This scheme shows excellent agreement with the R I 34a data as well as previous micro-channel water data. An important practical finding from this study is that the throttling valve in a refrigeration cycle offers significant stiffening to the system, suppressing the large pressure oscillations common to micro-channel heat sinks. | - |
dc.identifier.bibliographicCitation | INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, v.48, no.5, pp.928 - 940 | - |
dc.identifier.doi | 10.1016/j.ijheatmasstransfer.2004.09.018 | - |
dc.identifier.issn | 0017-9310 | - |
dc.identifier.scopusid | 2-s2.0-13644262522 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/20787 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S001793100400420X | - |
dc.identifier.wosid | 000227402100002 | - |
dc.language | 영어 | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Two-phase flow in high-heat-flux micro-channel heat sink for refrigeration cooling applications: Part I - pressure drop characteristics | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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