xov xwm

Cov fiber refractoryNyob rau hauv daim ntawv ntawm kev hloov pauv cua sov tuaj yeem faib ua ntau yam, qhov kev hloov pauv cua sov ntawm lub silo porous, huab cua hauv lub silo porous cua sov conduction thiab thermal conductivity ntawm cov khoom fiber khov, qhov twg qhov kev hloov pauv cua sov ntawm huab cua raug tsis quav ntsej. Qhov ceev ntawm cov khoom loj thiab qhov kub muaj kev sib raug zoo, qhov kub siab dua, qhov ceev ntawm cov khoom loj qis dua, qhov piv ntawm kev hloov pauv cua sov ntawm cov khoom loj nce. Rau cov khoom siv fiber refractory, qhov ceev ntawm cov khoom loj feem ntau yog qis dua 0.25g / cm ', qhov porosity yog siab dua 90%, cov roj theem tuaj yeem pom tias txuas ntxiv mus, cov khoom khov tuaj yeem pom tias tsis sib xws, yog li cov khoom siv thermal conductivity ntawm cov fiber yog me me.
Yog tias tsuas yog los ntawm txoj kev xav tias qhov ceev ntawm cov khoom me me, qhov thermal conductivity loj, qhov ceev ntawm cov khoom loj, qhov thermal conductivity me me; qhov no kuj tsis sib haum nrog qhov xwm txheej tiag tiag, xws li cov ntsiab lus ntawm cov pob slag txawv, txawm tias qhov ceev ntawm cov khoom loj zoo ib yam, tus lej ntawm cov fibers ib chav ntim txawv, yog li qhov porosity ib chav ntim tsis zoo ib yam, yog li yuav muaj qhov sib txawv ntawm thermal conductivity. Txawm li cas los xij, cov lus xaus zoo tuaj yeem sau ua ke raws li hauv qab no.
1. Qhov ua tau zoo ntawm thermalcov fibers refractorytxo qis nrog rau qhov nce ntawm qhov ceev, thiab qhov txo qis maj mam txo qis, tab sis thaum qhov ceev ncav cuag qee qhov ntau, qhov thermal conductivity tsis txo qis lawm thiab muaj qhov nyiam nce maj mam.
2. Thaum muaj qhov kub sib txawv, muaj qhov ua tau zoo ntawm cov cua sov tsawg kawg nkaus thiab qhov ceev tsawg kawg nkaus sib xws. Qhov ceev sib xws rau qhov ua tau zoo ntawm cov cua sov tsawg kawg nkaus nce ntxiv nrog rau qhov kub nce ntxiv.
3. Rau tib qho ceev, qhov thermal conductivity sib txawv nrog qhov loj ntawm cov pores.
(1) Qhov loj ntawm qhov pore yog 0.1 hli.
0C rau hauv = 0.0244W / (m. K) 100C thaum λ = 0.0314W / (m. K)
(2) Qhov qhib 2 hli.
Hauv ntawm 0C = 0.0314W/(m, K) λ = 0.0512W/(m . K) ntawm 100C. K)
Yog tias qhov pore txoj kab uas hla ntawm 1 hli, qhov kub nce ntawm 0C txog 500C, nws cov nqi thermal conductivity nce 5.3 npaug; yog tias qhov pore txoj kab uas hla ntawm 5 hli, qhov kub nce ntawm 0C txog 500C, nws cov nqi thermal conductivity nce 11.7 npaug. Yog li ntawd, qhov loj dua ntawm cov qhov hauv cov fiber refractory, qhov me dua qhov sib xws ntawm cov khoom sib xws, thiab cov thermal conductivity nce.