Lub thermal zog ntawm cov hlau ua npuas ncauj muaj xws li melting point, tshwj xeeb kub, thermal expansion coefficient, thermal conductivity, thermal diffusivity, thermal tawg thiab thermal shock tsis kam, qee qhov zoo ib yam li cov khoom siv matrix, thaum lwm tus muaj feem xyuam rau cov porosity, Pore. hom thiab qhov pore loj yog ze ze.
Cov ntaub ntawv uas muaj thermal conductivity zoo yuav nqus cua sov sai thiab dissipate tshav kub sai. Yog tias qee lub tshuab xav tau cov cua kub ntau los yog cov cua kub dissipation thaum siv, cov khoom siv thermal conductivity zoo raug xaiv. Raws li cov thermal conductivity qeb ntawm cov hlau ntshiab, nyiaj, tooj liab, txhuas, tungsten, magnesium thiab lwm yam ntaub ntawv, thaum lub thermal conductivity ntawm alloys feem ntau yog phem. Nws tuaj yeem pom tias cov thermal conductivity ntawm tooj liab kub dab dej yog qhov zoo tshaj plaws ntawm cov hlau ua lag luam.

Yog li vim li cas cov dab dej kub feem ntau yog ua los ntawm txhuas es tsis txhob siv tooj liab?
Nws kuj tseem muaj tseeb tias tooj liab ua cua sov zoo heev vim nws muaj thermal conductivity ntau dua li txhuas. Tab sis lub peev xwm ntawm lub tshav kub dissipation ntawm lub tshuab hluav taws xob tsis yog nyob ntawm qhov thermal conductivity ntawm cov khoom, tab sis kuj nyob rau hauv lub tshav kub dissipation cheeb tsam, cov duab ntawm lub radiator, thiab cov huab cua txaus.
Txawm tias me me npaum li cas qhov tshwj xeeb kub muaj peev xwm ntawm tooj liab yog, qhov tshwj xeeb tshav kub muaj peev xwm ntawm tooj liab yuav tsum qis dua, nws kub nce sai dua, thiab nws yooj yim rau dissipate tshav kub. Txawm li cas los xij, qhov ntom ntawm tooj liab yog 3.3 npaug ntawm txhuas. Lub radiator yog ib yam khoom loj thiab tsis tuaj yeem ua kom loj tuaj mus ib txhis. Tom qab ntawd qhov hnyav ntawm tooj liab ntau dua rau tib lub ntim.
Nyob rau hauv ntau yam, tus nqi ntawm tooj liab radiators feem ntau yog ntau tshaj 400% kim tshaj li ntawm txhuas radiators, tab sis nyob rau hauv cov nqe lus ntawm tus nqi, lub lag luam tsis tuaj yeem txais tooj liab radiators uas yog 4 npaug ntawm tus nqi.
Yog li puas muaj cov khoom siv uas tuaj yeem muaj cov thermal conductivity ntawm tooj liab, tab sis lub ntim thiab qhov hnyav piv rau txhuas?
Foamed tooj liab tej zaum yuav yog ib yam khoom tshiab tsim nyog ntawm kev mloog, uas muaj ntau yam kev sib txuas thiab kev sib txuas ntawm qhov pores sib npaug ntawm cov tooj liab matrix. Foamed tooj liab muaj hluav taws xob zoo conductivity thiab ductility, thiab muaj tsawg tus nqi npaj thiab zoo hluav taws xob conductivity.