毛細(xì)抽吸兩相環(huán)路（CPL）系統(tǒng)理論研究與實(shí)驗(yàn)設(shè)計(jì).pdf

1、華中科技大學(xué)碩士學(xué)位論文毛細(xì)抽吸兩相環(huán)路（CPL）系統(tǒng)理論研究與實(shí)驗(yàn)設(shè)計(jì)姓名：韓延民申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：工程熱物理指導(dǎo)教師：劉偉2003.4.29華中科技大學(xué)碩士學(xué)位論文ABSTRACTWi也highefficiencyhighdependabilityandenergysavingtheCapillaryPumpedLoop(CPL)，asatwophasethermocontrolsystem，isappliedinmanyfi

2、eldssuchascon仃ollingheattransferonspacecraft，coolinghighpowerdensityelectronicdevicenleCPLdrivestheworkingmediacirculationbythecapillarypressurecrossthesurfacetensionformedattheliquidvaporinterface，transferringthegreathe

3、atlcadswith10wtemperaturedifferencebyphasechange皿eCPLunsteadycharacteristicdisplaysthecontinualoscillationcharacteristic刀enegativeeffect，whentheliquidinthewickisdryout，andtheliquidisnotdrawnfromthebottomofthewickstructur

4、e，istocausethesystemfinallyoutofcontr01Inordertoavoidthebadnesssituation，wedesignanewCPLexperimentationsystemwithporouswickinthecondenserteduceoreliminatetheunsteadyeffectBasedontheconsideration。inthispapertheporousmedin

5、theoryisappliedintheheatandmasstransferanalysisoftheCPLtheunsteadystatesimulationdesc訂betheprocessfromtheinitialstartuptoanewbalancestate，thecalculationresultalecomparedatdifierentexteriorcondition：withorwithoutwarmupdev

6、ice，whichusedtoheatandturntheliquidintovaporandimprovethecute!conditionsofv印orflowinginto也egrooveTheliquidzonevariationinthewickpredictstheadaptablelcadstheCPLundertakenTheanalysisofcondensationinthegroovesofacapillarypu

7、mpedloopscondenserwithporouswickshowsthesimulationresultswhieharegivenatvariousconditionssuchastheinletvelocityheatloads，supercoolingdegreeetctheresultssuggestthedistributionoftheliquidlayerTheresultsindicateattheinitial

8、izationofstart—upprocessthelowheatlcadexertedontheevaporatorissuggestedinordertoavoidthedry—outsituationintheporouswickas、viJJcausetheJOSSofthecapillarypressurewitilthewarmupdevice，thevaporouaetconditioninthevaporgroovew

9、illbeimproved，andthepropersizeofthefinsshouldbeoptimizedwhichwillenhancethecarryingloadsTheanalysisofcondenserofCPLsystemshowthattheinletvelocityofthevaporflowingintothecondenserassociatewiththeliquidvaporinterface，andth

10、eperOllSmediainthecondenserwillenhancetheheattransferefficientwiththeouterspapeThesimulateapplicationisofferedthoughthecomparablecalculationbysaturateorunsaturatedmodelThecalculationresultsofferadirectiontodesignalloptim

11、izedCPLexperimentationsystemunderdifferentstructureInordertoattaintheuniforillityoftheliquidsupplythecrossedliquidgroovesareadoptedattheboRomoftheevaporatorcoverboardThemeasllrepointsmarkingtheparametersoftheCPLsystemare