2014
DOI: 10.1088/0960-1317/24/3/035021
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Enabling two-phase microfluidic thermal transport systems using a novel thermal-flux degassing and fluid charging approach

Abstract: A novel two-port thermal-flux method has been proposed and demonstrated for degassing and charging two-phase microfluidic thermal transport systems with a degassed working fluid. In microscale heat pipes and loop heat pipes (mLHPs), small device volumes and large capillary forces associated with smaller feature sizes render conventional vacuum pump-based degassing methods quite impractical. Instead, we employ a thermally generated pressure differential to purge non-condensable gases from these devices before c… Show more

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Cited by 5 publications
(1 citation statement)
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“…Oshman et al [12] first pumped the MHP to a predetermined degree of vacuum, then filled the pipeline with working fluid and opened the charging valve to charge the working fluid until the MHP was sealed. An induction heating-based non-invasive hermetic sealing approach for permanently sealing the degassed and charged micro loop heat pipe (MLHP) devices was proposed in [13]. However, there are still two main problems left for the MHP encapsulation technique [1,9,[14][15][16].…”
Section: Introductionmentioning
confidence: 99%
“…Oshman et al [12] first pumped the MHP to a predetermined degree of vacuum, then filled the pipeline with working fluid and opened the charging valve to charge the working fluid until the MHP was sealed. An induction heating-based non-invasive hermetic sealing approach for permanently sealing the degassed and charged micro loop heat pipe (MLHP) devices was proposed in [13]. However, there are still two main problems left for the MHP encapsulation technique [1,9,[14][15][16].…”
Section: Introductionmentioning
confidence: 99%