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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Salakij, Saran James, A. Liburdy Deborah, V. Pence |
| Copyright Year | 2010 |
| Abstract | The use of two phase cooling strategies for high power microelectronics has been being widely investigated in order to better control desired operating temperatures and to reduce the mass flow rates required for cooling. However, disadvantages arise when considering the potential for unstable flow conditions and high pressure drop penalties associated with two phase microchannel flows. One possible method to reduce instabilities and maintain a low pressure drop is to extract the vapor phase as it is generated in the channel. This is proposed to be accomplished using at least one wall of the channel fabricated using a hydrophobic porous membrane with the necessary pressure differential to remove vapor while preventing liquid phase break through. To better understand the inherent operating conditions and limitations, conditions for vapor extraction relative to the flow and heat transfer is developed. The extraction regions identified are (i) full extraction, (ii) partial bubble extraction, (iii) two-phase evaporative extraction and (iv) single-phase evaporative extraction. In addition, criteria are presented for stability during bubble extraction. Physics-based criteria to justify the differences between the various regions are presented in terms of non-dimensional parameters. These can be then used to develop an extensive vapor extraction map that can be used to identify operating conditions associated with the extraction regions. |
| Starting Page | 1375 |
| Ending Page | 1386 |
| Page Count | 12 |
| File Format | |
| ISBN | 9780791844441 |
| DOI | 10.1115/IMECE2010-40976 |
| Volume Number | Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B |
| Conference Proceedings | ASME 2010 International Mechanical Engineering Congress and Exposition |
| Language | English |
| Publisher Date | 2010-11-12 |
| Publisher Place | Vancouver, British Columbia, Canada |
| Access Restriction | Subscribed |
| Subject Keyword | Membranes Cooling Stability Vapors Microelectronic devices Microchannel flow Modeling Flow (dynamics) Pressure Physics Microchannels High pressure (physics) Bubbles Pressure drop Heat transfer Operating temperature |
| Content Type | Text |
| Resource Type | Article |
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