Cov xwm txheej thiab nrawm ntawm Lyophilizer Sublimation
Thaum lub vapor noo ntawm dej khov ntawm ib qho kub yog ntau dua ib feem ntawm ib nrab ntawm cov pa dej hauv ib puag ncig, nws tuaj yeem pib sublime; lub suction thiab ntes ntawm cov dej vapor los ntawm cov condenser qis dua li cov khoom siv kub heev, thiab nws yog qhov kev sib tw dej sib luag, thiab nws yog qhov kev sib tw dej tau yooj yim rau cov roj thiab rov qab mus rau saum npoo ntawm cov chav dej nrawm, yog li sublimation nrawm yog qeeb heev {}} Lub taub hau txo cov tshuab nqus dej kom tshem tawm cov roj khov Txhawm rau kom muaj qhov qis qis tsim nyog rau sublimation {} g ntawm cov dej khov kho hauv chav tsev kom tsis txhob muaj 10}}}} Cov condenser ua tau ib lub tshuab nqus tsev tiag tiag dedicated to trapping water vapor. The temperature of product and condensation is usually -25℃and -50℃. The saturated vapor pressures of ice at this temperature are 63.3Pa and 1.1Pa respectively, so there is a considerable pressure difference between the sublimation surface and the condensation surface, if the Ib nrab siab ntawm cov roj tsis-condensable nyob rau hauv lub system tuaj yeem tsis quav ntsej txog lub sijhawm ntawm cov condenser directionally ntawm ib tug ntws los ua frost. Lub sublimation kub ntawm dej khov yog li 2822J / g. Yog hais tias sublimation txheej txheem tsis muab cua sov, cov khoom tuaj yeem txo lub zog sab hauv los them nyiaj rau thaum nws kub sib npaug nrog lub zog kub. Txhawm rau tswj qhov kub sib txawv ntawm sublimation thiab hws, kub txaus yuav tsum muab rau cov khoom.
