Cov kua cryogenic yog cov tshuaj uas khaws cia rau qhov kub qis heev, feem ntau qis dua -150 degrees Celsius. Cov kua no, xws li kua nitrogen, kua helium, thiab kua oxygen, yog siv rau ntau yam kev lag luam, kev kho mob, thiab kev tshawb fawb. Txawm li cas los xij, kev khaws cov kua cryogenic xav tau kev saib xyuas tshwj xeeb thiab kev ceev faj vim lawv qhov kub qis heev thiab muaj kev phom sij.
Yuav kom khaws cov kua dej cryogenic kom muaj kev nyab xeeb, nws yog ib qho tseem ceeb uas yuav tsum siv cov thawv tshwj xeeb thiab cov txheej txheem khaws cia uas tsim los tswj cov kub heev no. Ib hom thawv uas siv raukhaws cov kua cryogenicyog lub dewar uas muaj lub tshuab nqus tsev uas rwb thaiv tsev. Cov dewar no muaj ib lub thawv sab hauv uas tuav cov kua cryogenic, ib puag ncig los ntawm lub thawv sab nraud nrog lub tshuab nqus tsev nruab nrab ntawm ob lub. Lub tshuab nqus tsev no ua haujlwm ua lub rwb thaiv tsev kom cov kua nyob rau ntawm nws qhov kub qis thiab tiv thaiv kom tsis txhob muaj cua sov nkag mus rau hauv lub thawv.
Thaum twgkhaws cov kua cryogenic hauv lub dewar, nws yog ib qho tseem ceeb kom ntseeg tau tias lub thawv khaws cia rau hauv qhov chaw muaj cua zoo kom tiv thaiv kev sib sau ua ke ntawm cov pa roj uas yuav ua pa tawm ntawm cov kua. Tsis tas li ntawd, qhov chaw khaws cia yuav tsum tau nruab nrog cov tshuab kuaj pa roj thiab cua kom saib xyuas thiab tshem tawm cov pa roj uas tau ua pa tawm.
Nws tseem ceeb heev rau kev siv cov kua dej cryogenic nrog kev ceev faj kom tsis txhob muaj kev phom sij. Thaum sau cov kua dej cryogenic, cov txheej txheem yuav tsum tau ua nyob rau hauv qhov chaw uas muaj cua zoo, thiab cov khoom siv tiv thaiv tus kheej, xws li hnab looj tes thiab tsom iav, yuav tsum tau hnav. Tsis tas li ntawd, cov txheej txheem sau yuav tsum tau ua los ntawm cov neeg ua haujlwm tau kawm uas paub txog kev tuav thiab khaws cov kua dej cryogenic kom zoo.
Ntxiv rau kev siv cov thawv thiab cov txheej txheem tuav pov hwm kom raug, nws yog ib qho tseem ceeb uas yuav tsum ua raws li cov lus qhia tshwj xeeb rau kev khaws cia ntau hom kua cryogenic. Piv txwv li, cov kua nitrogen, uas feem ntau siv hauv cov chaw soj nstuam thiab cov chaw kho mob, yuav tsum khaws cia rau hauv qhov chaw uas muaj cua zoo kom deb ntawm cov chaw uas ua rau muaj hluav taws. Nws tseem yog ib qho tseem ceeb kom ntseeg tau tias qhov chaw khaws cia tau nruab nrog cov khoom siv txo qhov siab kom tiv thaiv kev sib sau ua ke ntawm qhov siab ntau dhau hauv lub thawv.
Thaum khaws cov kua helium, uas feem ntau siv rau hauv kev tshawb fawb cryogenic thiab cov ntawv thov superconducting, nws yog ib qho tseem ceeb kom khaws qhov chaw cia khoom kom muaj cua nkag tau zoo thiab tsis muaj cov khoom siv hluav taws xob. Tsis tas li ntawd, yuav tsum tau ceev faj kom tiv thaiv kev siab dhau ntawm lub thawv cia khoom, vim tias cov kua helium tuaj yeem nthuav dav sai thaum sov.
Rau kev khaws cov pa oxygen ua kua, uas siv rau hauv kev kho mob thiab kev siv hauv kev lag luam, yuav tsum ua raws li cov kev ntsuas kev nyab xeeb tshwj xeeb vim nws cov khoom oxidizing. Qhov chaw khaws cia yuav tsum muaj cua zoo thiab tsis muaj cov khoom siv hluav taws xob, thiab yuav tsum ceev faj kom tiv thaiv kev sib sau ua ke ntawm cov huab cua uas muaj oxygen, uas tuaj yeem ua rau muaj kev phom sij hluav taws.
Ntxiv rau kev ua raws li cov lus qhia no, nws yog ib qho tseem ceeb uas yuav tsum tau tshuaj xyuas thiab tswj xyuas cov thawv cia khoom thiab cov khoom siv uas siv rau cov kua dej cryogenic tas li. Qhov no suav nrog kev kuaj xyuas seb puas muaj cov cim qhia tias puas tsuaj lossis hnav, xyuas kom meej tias cov khoom siv txo qhov siab ua haujlwm zoo, thiab saib xyuas cov kua dej cryogenic hauv cov thawv kom tiv thaiv kev ntim ntau dhau.
Feem ntau, kev khaws cov kua dej cryogenic yuav tsum tau ua tib zoo saib xyuas txhua yam thiab ua raws li cov lus qhia kev nyab xeeb tshwj xeeb. Los ntawm kev siv cov thawv kom raug, cov txheej txheem tuav, thiab cov txheej txheem khaws cia, cov kev phom sij uas cuam tshuam nrog cov kua dej cryogenic tuaj yeem txo qis, ua rau lawv siv tau zoo thiab muaj kev nyab xeeb hauv ntau yam kev siv.
Lub sijhawm tshaj tawm: Lub Peb Hlis-14-2024
