Lub thermal conductivity ntawm tooj liab. Ib tug zoo kawg li khoom ntiag tug

lub luag hauj lwm ntawm tooj liab yuav tsis tau overemphasized nyob rau hauv lub keeb kwm ntawm tib neeg kev vam meej. Nws yog nrog nws cov neeg pib tsim metallurgy, kuv tau kawm los mus tsim cov cuab yeej, tais diav ntim chaws, hniav nyiaj hniav kub, thiab nyiaj txiag. Thiab tag nrho ua tsaug rau cov khoom nws ntawm no hlau, yog qhia nyob rau hauv lub hlau nrog rau lwm yam tshuaj. Ib yam dab tsi mos mos, ib yam dab tsi check, lub refractory, nws melts effortlessly. Nws muaj ntau yam zoo heev yam ntxwv, thiab ib tug ntawm lawv yog cov thermal conductivity ntawm tooj liab.

Yog hais tias peb yuav sib tham hais txog qhov no yam ntxwv, nws yog tsim nyog los qhia ntxiv li cas yog num. Hu thermal conductivity ntawm ib yam khoom mus rau cov hloov thaum tshav kub kub ntawm lub rhuab feem mus rau ib tug txias. Yog li ntawd, lub thermal conductivity ntawm tooj liab yog ib tug ntawm lub siab tshaj plaws ntawm cov hlau. Yuav ua li cas yuav ua tau peb soj ntsuam cov cuab yeej raws li ib tug zoo los yog phem?

Yog hais tias nug tse thiab tse, lawv hais tias zoo li, uas tib tooj liab tais diav zoo hloov sov los ntawm qhov hluav taws kub rau cov khoom tab tom npaj, thiab lub tshav kub yog tusyees faib nyob rau qhov chaw nyob rau hauv kev sib cuag nrog cov nplaim taws.

Ntawm cov hoob kawm, lwm yam kev co, thiab tsis tsuas yog co, hloov tshav kub los yog, hloov, muaj txaus conductivity, tab sis tooj liab, no muaj peev xwm yog ib tug ntawm qhov zoo tshaj plaws thiaj li hu ua thermal conductivity coefficient ntawm tooj liab yog lub siab tshaj plaws saum toj no xwb nyiaj.

Ntaus cim muaj peev xwm muab xam lub caij nyoog ntawm qhov kev siv ntawm cov hlau nyob rau hauv ntau yam teb. Nyob rau hauv tag nrho cov tooj liab kub pauv systems nws yog thawj tus neeg sib tw rau daim ntawv thov. Piv txwv li, nyob rau hauv Electro pab kiag li lawm los yog tsheb radiator, nyob rau lub rhuab coolant kua muab tshaj thaum tshav kub kub.

Tam sim no koj yuav tau sim kom to taub dab tsi tshwm sim los rau hauv lub tshav kub hloov nyhuv. Yuav ua li cas tshwm sim yog piav heev tsuas. Muaj yog ib tug niaj hnub zog faib tshaj qhov ntim ntawm cov khoom. Koj muaj peev xwm kos ib analogy nrog ib tug volatile roj. Ib zaug nyob rau ib vicious txog ntsha xws roj occupies tag nrho cov muaj nyob rau qhov chaw. Yog li no, yog hais tias tus hlau yog rhuab nyob rau hauv tej qho kev cheeb tsam, lub resulting zog yog faib tusyees thoob plaws cov khoom.

Xws li ib tug tshwm sim muaj peev xwm yuav piav los ntawm lub cua sov conductivity ntawm tooj liab. Tsis tas yuav mus rau hauv lub quantum physics, nws yuav tau hais tias vim ib tug sab nraud lub zog qhov chaw (cua sov) ntawm lub atoms tau txais ntxiv zog thiab ces hau nws mus rau lwm atom. Lub zog (thaum tshav kub kub) yog faib thoob plaws hauv lub ntim ntawm cov kwv, ua nws zuag qhia tag nrho cov cua kub. Qhov no tshwm sim nrog rau tej tshuaj.

Qhov txawv tsuas yog tias tooj liab, uas yog ib tug heev thermal conductivity, zoo thaum tshav kub kub hloov tsheb, thiab lwm yam ua tib yam li ntau zuj zus. Tab sis nyob rau hauv ntau tej zaum nws yuav tsim nyog tej khoom vaj tse. Nyob rau cov khoom teejtug uas tshuaj tsis zoo ua tshav kub raws li rwb thaiv tsev, vim cov neeg pluag thaum tshav kub kub hloov lwm lub tsev tsis tshwm sim nws losses. Thermal rwb thaiv tsev nyob rau hauv vaj tse ua tau kom muaj xis nyob tej yam kev mob nyob rau hauv lub loj tshaj plaws frosts.

Cov kev pauv ntawm lub zog los yog, raws li nyob rau hauv peb cov ntaub ntawv, Thaum tshav kub kub hloov lwm lub tsev, thiab tej zaum yuav sib txawv ntawm cov ntaub ntawv, yog hais tias lawv muaj nyob rau hauv lub cev sib chwv. Qhov no yog dab tsi tshwm sim thaum peb muab tso rau lub hwj kais rau qhov hluav taws kub. Nws yog rhuab thiab ces dej kub los ntawm cov tais diav. Vim cov ntaub ntawv uas thaj chaw ntawm tshav kub hloov tshwm sim. Thaum tshav kub kub hloov lwm lub tsev yog nyob raws li qhov muaj ntau yam, xws li lub zog ntawm cov khoom nws tus kheej, xws li nws kev coj dawb huv. Yog li, yog hais tias tus thermal conductivity ntawm tooj liab yog ib qho zoo tshaj li uas ntawm lwm yam hlau, nws muaj nws alloys, bronze thiab tooj dag muaj ib tug ho poorer thaum tshav kub kub conductivity.

Tham txog cov zog, nws yuav tsum tau muab sau tseg tias thermal conductivity nyob ntawm kub. Txawm lub feem ntau ntshiab tooj liab nrog ib tug cov ntsiab lus ntawm 99.8%, raws li cov kub tsub kom lub thermal conductivity dauv, thiab lwm yam co xws li manganese dag, nrog ua kub coefficient qab.

Nyob rau hauv lub saum toj no piav qhia, piav qhia yog muab ntawm lub tswvyim li thermal conductivity, yog ntaus nqi mus rau hauv lub cev tshwm sim, cov piv txwv ntawm tooj liab thiab lwm yam xam tau tias yog ib co daim ntawv sau npe ntawm cov khoom nyob rau hauv lub neej txhua hnub.