Lub thawv khov khoom noj hiav txwv

Txheej txheem cej luam:

Cov txheej txheem khov khoom noj khoom haus hauv cov dej hiav txwv yog ib qho thev naus laus zis tshiab rau kev khov khoom noj hauv xyoo tas los no. Qhov kub ntawm cov kua nitrogen yog -195.8 ℃, thiab tam sim no nws tau lees paub tias yog qhov chaw txias zoo tshaj plaws, ua haujlwm tau zoo thiab pheej yig tshaj plaws. Thaum cov kua nitrogen sib cuag nrog cov dej hiav txwv, qhov sib txawv ntawm qhov kub yog tshaj 200 ℃, thiab cov khoom noj tuaj yeem khov sai sai hauv 5 feeb. Cov txheej txheem khov sai ua rau cov dej khov me me ntawm cov dej hiav txwv, tiv thaiv kev poob dej, tiv thaiv kev puas tsuaj ntawm cov kab mob thiab lwm yam kab mob me me, ua rau cov khoom noj yuav luag tsis muaj kev hloov pauv oxidative thiab cov rog rancid, thiab tswj cov xim qub, saj thiab cov as-ham ntawm cov dej hiav txwv, yog li kev khov ntev kuj tseem tuaj yeem ua kom muaj qhov saj zoo tshaj plaws.

Lub tshuab ua kom khov dej hiav txwv uas muaj kua nitrogen yog thawj lub tshuab siv rau kev khov dej hiav txwv zoo vim nws muaj lub tub yees sai, khaws cia ntev, siv cov khoom siv tsawg, siv nyiaj tsawg, siv zog tsawg, tsis muaj suab nrov thiab tsis tas yuav kho. Peb kwv yees tau tias cov tshuab ua kom khov dej hiav txwv uas muaj kua nitrogen yuav maj mam hloov cov tshuab ua kom khov thiab rov ua kom khov dua qub, uas yuav ua rau muaj kev hloov pauv loj heev rau kev ua haujlwm ntawm lub tshuab ua kom khov ib txwm muaj.

Cov yam ntxwv ntawm cov khoom:

○ Siv cov thev naus laus zis rwb thaiv tsev ntau txheej uas muaj lub tshuab nqus tsev siab heev los xyuas kom meej tias cov kua nitrogen evaporation poob qis heev (<0.8%) thiab tus nqi ua haujlwm qis heev.

○ Lub kaw lus saib xyuas thiab tswj hwm lub tank kua nitrogen ntse tuaj yeem saib xyuas qhov kub thiab qib kua ntawm lub tank ntses hauv lub sijhawm tiag tiag, ua tiav kev sau tsis siv neeg, ceeb toom rau ntau yam kev ua yuam kev, thiab xyuas kom meej tias cov khoom siv ua haujlwm zoo. Tib lub sijhawm, nws muab lub kaw lus tswj hwm cov khoom khaws cia, uas ua rau kev tswj hwm cov khoom tawm ntawm lub tsev rau khoom thiab hauv tsev rau khoom pom tseeb ntawm ib qho muag.

○ Lub plhaub sab hauv thiab sab nraud yog ua los ntawm cov hlau tsis xeb uas tsis yog khoom noj khoom haus kom ntseeg tau tias cov khoom siv tau ntev tshaj 10 xyoo.

○ Lub tais tig sab hauv yog tsim los pab kom yooj yim nkag mus rau cov khoom noj ntses. Qee cov qauv tuaj yeem nruab nrog lub zog hluav taws xob tig kom nkag tau yam tsis siv neeg.

○ Nws tuaj yeem khaws cia rau hauv ob qho tib si roj thiab kua kom ntseeg tau tias qhov kub ntawm lub qhov ncauj tank ncav cuag -190 degree C.

Cov khoom zoo:

○ Tus nqi qis ntawm cov kua nitrogen
Cov thev naus laus zis rwb thaiv tsev ntau txheej uas muaj lub tshuab nqus tsev ua kom cov kua nitrogen poob qis thiab cov nqi khiav lag luam qis.

○ Cov thev naus laus zis tshiab ua rau cov saj qub qub
Cov kua nitrogen ua kom khov sai, cov khoom siv ua dej khov hauv cov khoom noj tsawg kawg nkaus, tshem tawm qhov poob dej, tiv thaiv cov kab mob thiab lwm yam kab mob me me ua rau cov khoom noj puas tsuaj, yog li cov khoom noj yuav luag tsis muaj kev hloov pauv oxidation thiab tsuas yog rancid.

○ Lub kaw lus saib xyuas ntse
Muaj peev xwm nruab nrog lub kaw lus saib xyuas ntse, kev saib xyuas lub network tiag tiag ntawm txhua lub tank kub, qib kua siab, thiab lwm yam, kuj tuaj yeem paub txog kev sau tsis siv neeg, txhua yam kev ceeb toom txhaum. Tib lub sijhawm los muab cov khoom muag tswj kev tswj hwm, cov khoom nkag thiab tawm ntawm kev tswj hwm kev cia khoom.