Ib qho Ultralight Capillary-Driven Heat Pipe cooling technology
Capillary uas tau tsav cov kav dej kub, vim lawv cov qauv tsim yooj yim, tus nqi qis, tsim tau yooj yim, thiab muaj peev xwm ua kom sov tau zoo, tej zaum yuav yog cov kev daws teeb meem nrov tshaj plaws rau kev tswj xyuas thermal tswj microelectronic Cheebtsam. Hauv smartphones thiab laptops, flatten lub universal tubular tsim kom ntxiv compress. Lub hauv paus ntsiab lus ntawm cov kav dej kub yog kom nthuav tawm cov cua kub tshaj tawm los ntawm cov khoom siv hluav taws xob microelectronic los ntawm kev hloov hluav taws xob latent ntawm cov dej ua haujlwm hauv lub tshuab nqus tsev. Qhov txias thiab kub kawg ntawm cov txheej txheem enclosure ua haujlwm raws li cov evaporators thiab condensers feem, thaum lub luag haujlwm ntawm qhov nruab nrab yog muab cov channel rau (i) steam flow (los ntawm qhov kub kawg mus rau qhov txias txias) thiab (ii) condensate flow ( los ntawm qhov txias kawg mus rau qhov kub kawg) los ntawm capillary kev txiav txim los ntawm lub wick qauv los ntawm lub hauv paus hollow cheeb tsam. Nyob rau hauv nruab nrab, chav thiab condensate ntws nyob rau hauv lub opposite kev taw qhia, sib cais los ntawm ib tug dawb nto interface tshwm sim los ntawm nto tension flow quab yuam. Lub hom phiaj tsim ntawm cov yeeb nkab cua sov yog txo qis kev ua haujlwm kub ntawm cov khoom txuas nrog cov evaporator los ntawm kev tso cua sov kom thauj mus los ntawm cov yeeb nkab cua sov thiab dissipated ntawm qhov kawg condenser.
Tsis ntev los no, xibfwb Kiju Kang los ntawm Chonnam National University hauv Kaus Lim Qab Teb tau ua qhov kev nce qib tshiab hauv kev daws teeb meem rau cov tshuab hluav taws xob cua txias. Capillary uas tau tsav cov kav dej kub yog ib qho zoo thermal tov rau compressed hluav taws xob cua txias tshuab, muab ib tug ultra lightweight tshav kub yeeb nkab thermal tov rau mobile daim ntaub ntawv. Nyob rau hauv txoj kev tshawb no, lub plhaub uas encapsulates theem hloov txheej txheem ntawm cov dej ua hauj lwm yog tsim los ntawm ib tug tuab ntawm ~ 40 μ Ua los ntawm tshuaj plating ntawm m. Tsis tas li ntawd, cov txheej txheem wick uas thauj cov condensate mus rau qhov chaw tshav kub los ntawm capillaries kuj yog chemically plated mus rau sab hauv ntawm lub casing, tsim 100 μ M tuab microporous txheej.
Cov qauv wick no yog ua raws li superhydrophilized los ntawm kev tsim nano textured blackening ntawm microporous wick txheej. Qhov ua tau zoo ntawm peb cov qauv siv hluav taws xob ultra-lub teeb hluav taws xob (UHP), raws li kev ntsuas ntawm lub teeb yuag, qhia tau hais tias nyob rau nruab nrab, cov khoom lag luam ntawm tib hom nrog sintered tooj liab cores ntawm qhov sib xws sab nraud tau txo qhov hnyav los ntawm 73% (xws li, txog. 2.7 g piv rau ~ 10.0 g), thaum muab cov cua kub sib npaug. Tsis tas li ntawd, vim yog cov cua kub ntxiv ntawm lub plhaub phab ntsa ultra-thin thiab lub teeb tseem ceeb, uHP ua haujlwm nrog 25% txo qis hauv evaporator kub.
