Kev ua tau zoo ntawm cov roj av yog txiav txim los ntawm lawv lub cev, tshuaj, thiab cov khoom siv thermodynamic. Cov khoom no tsis tsuas yog tsim cov cwj pwm ntawm cov pa roj xwb tab sis tseem cuam tshuam ncaj qha rau lawv cov kev siv tau thiab kev ntseeg siab hauv ntau yam kev lag luam thiab thev naus laus zis. Kev nkag siab tob txog lawv cov yam ntxwv ua tau zoo pab txhim kho cov ntawv thov kev daws teeb meem thiab txhim kho kev lag luam ua haujlwm tau zoo.
From a physical perspective, industrial gases possess characteristics such as low density, high diffusivity, and compressibility. Tsawg ntom ntom tso cai rau kom yooj yim kev faib tawm hauv qhov chaw kaw, ua rau lawv haum raws li kev tiv thaiv lossis tshem tawm xov xwm; siab diffusivity enables gases sai sai nkag mus rau cov qauv zoo los yog ua kom zoo sib xws, ua tau raws li qhov yuav tsum tau ua ntawm cov txheej txheem xws li vuam thiab semiconductor tu; compressibility tso cai rau gases txo qhov ntim thaum lub sij hawm cia thiab kev thauj mus los los ntawm pressurization los yog liquefaction, txhim kho logistics efficiency thiab txo nqi. Tsis tas li ntawd, qee cov roj av, xws li helium, muaj cov thermal conductivity siab heev thiab muaj peev xwm ua kom sov, ua rau lawv tsim nyog rau siab -kev tswj qhov kub thiab txias.
Nyob rau hauv cov nqe lus ntawm chemical zog, industrial gases muaj ib tug ua ke ntawm reactivity thiab inertness. Cov pa oxygen, hydrogen, thiab carbon monoxide muaj cov tshuaj lom neeg ua haujlwm siab thiab tuaj yeem koom nrog cov tshuaj tiv thaiv tseem ceeb xws li oxidation, txo, thiab synthesis, cuam tshuam ncaj qha rau cov tshuaj tiv thaiv kab mob thiab cov khoom yields. Inert gases xws li nitrogen, argon, thiab helium, vim lawv cov qauv molecular ruaj khov, tsis tshua muaj tshuaj lom neeg cov tshuaj tiv thaiv thiab yog li muab kev sib cais thiab kev tiv thaiv nyob rau hauv siab - kub, siab - siab, los yog yooj yim oxidized ib puag ncig, tiv thaiv cov khoom siv degradation. High -purity tshwj xeeb gases, nrog rau lawv cov impurity tsis tshua muaj cov ntsiab lus, tuaj yeem zam cov kev tshwm sim sab nraud lossis cov khoom siv tsis zoo uas tshwm sim los ntawm cov kab ke.
Thermodynamic zog yog qhov tseem ceeb sib npaug. Tsis muaj xws li cov cua kub tshwj xeeb, cua sov ntawm combustion, thiab latent cua sov ntawm vaporization ntawm ib tug roj txiav txim nws efficiency nyob rau hauv lub zog hloov dua siab tshiab thiab siv cov txheej txheem. Hydrogen, vim nws cov nqi calorific siab thiab siab combustion tus nqi, yog suav hais tias yog ib tug zoo tagnrho huv lub zog nqa; lub endothermic vaporization zog ntawm cov kua cryogenic xws li kua nitrogen thiab kua argon yog dav siv nyob rau hauv tub yees, cryopreservation, thiab qis -kub thwmsim.
Tsis tas li ntawd, kev ruaj ntseg thiab kev nyab xeeb yog qhov tseem ceeb hauv kev ntsuas kev ua haujlwm ntawm cov roj av. Kev ruaj ntseg ntawm cov roj sib txawv hauv kev khaws cia, kev thauj mus los, thiab kev siv cov xwm txheej yog cuam tshuam nrog kev txuas ntxiv ntawm cov khoom siv thiab kev tswj hwm ntawm kev pheej hmoo. Kev nkag siab txog cov khoom ntawm cov nplaim taws, tawg, muaj kuab lom, lossis cov roj corrosive pab tsim cov kev tiv thaiv kev tshawb fawb thiab cov phiaj xwm xwm txheej ceev, ua kom muaj kev nyab xeeb ntawm cov neeg ua haujlwm thiab cov khoom siv.
Zuag qhia tag nrho, cov khoom ntawm kev lag luam gases suav nrog ntau yam, suav nrog kev thauj mus los ntawm lub cev, tshuaj lom neeg, kev hloov pauv hluav taws xob, thiab kev ruaj ntseg. Cov khoom sib txuam no ua rau lawv muaj peev xwm hloov tau thiab nthuav dav hauv thaj chaw xws li metallurgy, chemical engineering, electronics, tshuaj, thiab lub zog, ua rau lawv lub hauv paus tseem ceeb rau kev ua haujlwm zoo thiab ruaj khov ntawm cov tshuab niaj hnub no.
