8. Qhov twg yog qhov muaj emissivity siab tshaj? Nqe lus piav qhia: Emissivity ntawm cov xim dub yog 0.97 thaum lub cib liab, pob zeb thiab dull stainless hlau yog 0.93, 0.88 thiab 0.21 raws.
Yuav xam emissivity li cas?
Kev suav ntawm "kev ua tau zoo"=tag nrho cov hluav taws xob tawm hluav taws xob / tag nrho lub cev dub tawm hluav taws xob (ceeb toom 1).
Koj puas tuaj yeem muaj qhov emissivity ntau dua 1?
Xwb emissivity tuaj yeem tshaj 1. Qhov no yog rau cov khoom me dua li qhov tseem ceeb ntawm cov hluav taws xob wavelength. … Kardar, "Rov hluav taws xob los ntawm cov khoom cylindrical ntev, " Phys.
Tus nqi emissivity yog dab tsi?
Emissivity txhais tau tias yog qhov piv ntawm lub zog hluav taws xob los ntawm cov khoom siv saum npoo mus rau qhov hluav taws xob los ntawm cov emitter zoo meej, lub npe hu ua lub cev dub, ntawm tib qhov kub thiab qhov nthwv dej thiab hauv qab. tib yam kev pom. Nws yog ib tug dimensionless tooj ntawm 0 (rau ib tug zoo meej reflector) thiab 1 (rau ib tug zoo meej emitter).
Yuav ua li cas yog qhov siab tshaj plaws?
Emissivity ntawm cov ntaub ntawv txhais tau tias yog piv ntawm lub zog hluav taws xob los ntawm cov khoom nto rau lub zog hluav taws xob los ntawm qhov zoo tshaj plaws emitter(dub lub cev emission / dub lub cev hluav taws xob) nyob rau hauv lub tib yam mob. … Nws yog tus nqi nruab nrab ntawm 0 rau qhov zoo tagnrho reflector thiab 100% rau ib qho zoo tagnrho emitter.
