Cov lus qhia yuav ua li cas kho cov emissivity ntawm tus ntsuas kub infrared
Infrared (ir) hluav taws xob
Kev siv hluav taws xob infrared yog ubiquitous thiab kawg, thiab qhov ntau dua qhov kub thiab txias ntawm cov khoom, ntau tshaj tawm cov hluav taws xob tshwm sim ua. Lub tshuab nqus tsev tuaj yeem kis cov hluav taws xob hluav taws xob infriction lub zog emitting los ntawm lub hnub txog 93 lab ntawm lub sijhawm thiab chaw rau ntiaj teb, uas nws tau nqus peb cov kev sov siab. Thaum peb sawv ntsug nyob rau hauv pem hauv ntej ntawm cov tub yees zaub mov hauv khw, hluav taws xob hluav taws xob kub hnyiab tau emridiat los ntawm peb lub cev yog nqus tau los ntawm peb lub cev yog nqus cov zaub mov hauv tub yees, ua rau peb muaj kev txias heev. Cov nyhuv hluav taws xob tau pom tseeb nyob rau hauv ob qho piv txwv, thiab peb tuaj yeem pom meej txog cov kev hloov pauv thiab hnov nws lub neej.
Thaum peb yuav tsum tau ua kom muaj nuj nqis ntawm infriation infiation, peb yuav tsum ntsuas ntsuas kub ntawm infrared hluav taws xob, uas yuav tsum tau siv ntawm tus pas ntsuas kub infrared. Cov ntaub ntawv sib txawv nthuav tawm cov yam ntxwv sib txawv hluav taws xob hluav taws xob. Ua ntej siv tus pas ntsuas kub infrared nyeem cov ntsiab lus ntawm kev ntsuas hluav taws xob infriation thiab qhov tshwj xeeb infrariation cov yam ntxwv ntawm cov khoom ntsuas ntsuas.
Infrared emissivity =}}}}}}}}}} reflect reflect + + + reflect + + + + + + + + + +
Tsis hais txog lub tshuab hluav taws xob hluav taws xob ntau, thaum tawm, nws yuav nqus tau, yog li ntawd nqus tus nqi {}} emissivity. Tus pas ntsuas kub infrared nyeem cov hluav taws xob infrared me me tawm los ntawm qhov chaw ntawm cov khoom. Lub ntsuas hluav taws xob infriometer tsis tuaj yeem nyeem cov hluav taws xob infriation poob rau saum huab cua. Yog li ntawd, hauv kev ntsuas kev ua haujlwm, peb tuaj yeem tsis lees paub qhov kev hloov pauv. Nyob rau hauv txoj kev no, peb tau txais cov lus yooj yim rau kev ntsuas hluav taws xob infriation:
Infrared emissivity=emissivity -} tsom iav
Refentalance yog intortely proportional kom emissivity muaj zog, thiab lub zog ua kom muaj peev xwm cuam tshuam txog hluav taws xob hluav taws xob infridiat. Feem ntau, kev kuaj xyuas pom tau siv los txiav txim siab txog qhov kev xav ntawm ib qho khoom. Tooj tshiab muaj qhov nce siab dua tab sis qis dua emissivity (0.6-0.7), thiab tooj liab uas muaj kev cuam tshuam loj tab sis siab dua emissivity (0.88). Lub Emissivity ntawm cov feem ntau ntawm cov xim pleev xim yog qhov siab heev (0.9-0.95), thaum lub refrity tuaj yeem tsis quav ntsej.
Rau feem coob ntawm infrared thermometers, qhov yuav tsum tau teeb tsa yog qhov ntsuas uas muaj kev ntsuam xyuas ntawm cov khoom siv sim, uas feem ntau yog pre- teev rau 0.95. Qhov no yog txaus kom ntsuas cov khoom siv organic lossis cov chaw pleev xim.
Los ntawm kev kho lub tsom iav, qhov teeb meem ntawm cov hluav taws xob tsis txaus nyob rau ntawm qee cov ntaub ntawv, tshwj xeeb tshaj yog cov ntaub ntawv hlau, tuaj yeem them nyiaj hlau rau. Tsuas yog thaum muaj qhov siab - kub inrrared hluav taws xob tau ntsuas thiab nws xav txog kev cuam tshuam ntawm kev ntsuas yuav tsum tau txiav txim siab.
