Cov khoom ntawm Liquid Nitrogen:

1. Tsawg kub:

Ib qho ntawm cov khoom tseem ceeb tshaj plaws ntawm cov kua nitrogen yog nws qhov kub tsis tshua muaj siab. Ntawm -195.8 degrees Celsius, nws tuaj yeem khov cov tshuaj sai sai thaum sib cuag. Cov cuab yeej no ua rau nws zoo tagnrho rau cov ntawv thov cryogenic, xws li khaws cia cov qauv tshuaj lom neeg, khov cov khoom noj khoom haus, thiab tsim cov superconductors.

2. Inertness:

Cov kua nitrogen yog chemically inert, txhais tau tias nws tsis hnov ​​​​mob nrog ntau yam tshuaj. Cov cuab yeej no ua rau nws tsim nyog rau kev khaws cia thiab thauj cov khoom tsis zoo, vim nws txo qhov kev pheej hmoo ntawm kev sib tsoo lossis tawg. Tsis tas li ntawd, nws qhov xwm txheej tsis zoo tso cai rau nws siv rau hauv ntau yam txheej txheem kuaj thiab ua kom txias rau cov khoom siv hluav taws xob rhiab heev.

3. Expansion raws li evaporation:

Thaum raug rau hauv chav tsev kub, kua nitrogen sai evaporates thiab nthuav los ntawm ib qho ntawm kwv yees li 700 zaug. Qhov kev nthuav dav no tuaj yeem tsim lub zog muaj zog, ua rau cov kua nitrogen muaj txiaj ntsig zoo rau cov ntawv thov xws li foob pob hluav taws propulsion thiab ua kom txias hauv cov txheej txheem kev lag luam.

Kev siv kua Nitrogen hauv ntau yam kev lag luam:

1. Kev lag luam zaub mov:

Cov kua nitrogen tau hloov pauv kev lag luam zaub mov los ntawm kev ua kom muaj kev tsim cov khoom noj tshwj xeeb. Nws yog feem ntau siv los khov cov khoom noj sai sai, khaws cia lawv cov freshness thiab kev ntxhib los mos. Cov txheej txheem no feem ntau yog siv rau hauv kev tsim cov ice cream, khov khoom qab zib, thiab cov khoom noj khov-qhuav. Tsis tas li ntawd, cov kua nitrogen yog siv rau kev khaws khoom noj thiab kev thauj mus los kom txo qis kev lwj thiab tswj cov khoom zoo.

2. Kev Lag Luam Kev Kho Mob thiab Pharmaceutical:

Hauv kev kho mob, kua nitrogen pom kev siv dav hauv cov txheej txheem cryotherapy, qhov uas nws tau siv los khov thiab rhuav tshem cov ntaub so ntswg txawv txav, xws li warts lossis precancerous hlwb. Nws kuj yog siv rau cryopreservation ntawm cov qauv lom, nrog rau cov phev, qe, thiab embryos rau kev kho fertility. Ntxiv mus, cov tuam txhab tshuaj siv cov kua nitrogen thaum lub sij hawm tsim cov txheej txheem los tswj qhov kub thiab txias uas yuav tsum tau muaj rau qee yam kev cuam tshuam thiab khaws cov ntaub ntawv rhiab.

3. Kev tsim khoom thiab Engineering:

Cov kua nitrogen ua lub luag haujlwm tseem ceeb hauv kev tsim khoom thiab engineering kev lag luam vim nws cov khoom cua txias. Nws yog siv los ua ib qho coolant nyob rau hauv ntau yam machining txheej txheem, xws li sib tsoo, txiav, thiab drilling, los tiv thaiv overheating thiab ntev lub neej. Tsis tas li ntawd, kua nitrogen yog ua haujlwm nyob rau hauv cov txheej txheem kev kho cua sov hlau los txhim kho cov khoom zoo li hardness thiab durability. Nws qhov kub tsis tshua muaj kuj tseem pab txhawb lub shrink-fitting ntawm cov khoom thiab pab hauv kev tsim cov precision qhov chaw.

4. Kev Tshawb Fawb thiab Kev Txhim Kho:

Hauv cov chaw tshawb fawb, cov kua nitrogen ua haujlwm rau ntau lub hom phiaj. Nws yog siv los ua ib lub coolant rau superconducting hlau nplaum nyob rau hauv nuclear magnetic resonance (NMR) spectroscopy thiab magnetic resonance imaging (MRI) tshuab. Tsis tas li ntawd, nws ua rau txoj kev kawm ntawm qhov kub thiab txias tshwm sim hauv physics thiab chemistry thwmsim. Nws qhov tsis tshua muaj kub kub kuj ua rau nws yog qhov zoo tshaj plaws coolant rau cryostats siv nyob rau hauv ntau yam kev siv scientific.

5. Automotive Kev Lag Luam:

Cov kua nitrogen pom cov ntawv thov hauv kev lag luam tsheb, tshwj xeeb hauv kev tsim cov log tsheb. Nws yog siv los khov cov roj hmab sib txuas sai sai thaum cov txheej txheem vulcanization, uas txhim kho lub log tsheb kom ruaj khov thiab ua haujlwm tau zoo. Cov kua nitrogen kuj tseem ua haujlwm hauv cov chaw kuaj cav kom simulate huab cua txias thiab ntsuas lub cav ua haujlwm nyob rau hauv cov xwm txheej zoo li no.

Cov kua nitrogen cov yam ntxwv tshwj xeeb ua rau nws muaj txiaj ntsig zoo thoob plaws ntau yam kev lag luam. Nws tsis tshua muaj kub, inertness, thiab nthuav dav raws li evaporation ua rau ntau yam kev siv, los ntawm kev tsim khoom noj rau cov txheej txheem kho mob thiab kev tshawb fawb tshawb fawb. Raws li kev siv thev naus laus zis, kev siv cov kua nitrogen zoo li yuav nthuav dav ntxiv, pab txhawb kev tsim kho tshiab thiab kev vam meej hauv ntau qhov chaw.