iindaba

I-fiber ephikisayongokohlobo lokudluliswa kobushushu kunokwahlulwa ngokweenkalo eziliqela, ukugqithiselwa kobushushu bemitha yesisele esinezingxobo, umoya ongaphakathi kwibhobhobhobhoyi ye-silo enemingxuma kunye ne-thermal conductivity yefayibha eqinileyo, apho ukuhanjiswa kobushushu be-convective kungahoywa. Ukuxinana ngobuninzi kunye nobushushu bunobudlelwane obuxhomekeke omnye komnye, kokukhona iqondo lobushushu liphezulu, kokukhona kusezantsi ukuxinana kwesambuku semeko, umlinganiselo wokudluliselwa kobushushu ngemitha uyenyuka. Kwiimveliso ze-fiber refractory, ubuninzi be-bulk ngokuqhelekileyo bungaphantsi kwe-0.25g / cm ', i-porosity ingaphezulu kwe-90%, isigaba segesi sinokubonwa njengento eqhubekayo, isigaba esiqinileyo sinokubonwa njengento engapheliyo, ngoko ke i-thermal conductivity ye-fiber incinci.
Ukuba ngokulula ukusuka kwithiyori yokuba ubuninzi bobuninzi buncinci, i-thermal conductivity inkulu, ubuninzi be-bulk conductivity enkulu ye-thermal incinci; oku kwakhona akuhambelani nemeko yokwenyani, njengomxholo webhola ye-slag yahlukile, nokuba ubuninzi be-bulk bufana, inani leefayili kwiyunithi nganye yeyunithi iyahluka, ukwenzela ukuba i-porosity yeyunithi nganye ayifani, ngoko kuya kubakho ukungafani kwi-conductivity ye-thermal. Nangona kunjalo, izigqibo ezisemgangathweni zinokushwankathelwa ngolu hlobo lulandelayo.
1. I-thermal conductivity yeiifiber refractoryiyancipha ngokunyuka koxinzelelo, kwaye ukuncipha kuncipha ngokuthe ngcembe, kodwa xa ubuninzi bufikelela kuluhlu oluthile, i-thermal conductivity ayisayi kuncipha kwaye inomdla wokwandisa ngokuthe ngcembe.
2. Kwiqondo lokushisa elihlukeneyo, kukho ubuncinci be-thermal conductivity kunye ne-density encinci ehambelanayo. Ubuninzi obuhambelana nobuncinci be-thermal conductivity buyanda ngokunyuka kweqondo lokushisa.
3. Ngoxinaniso olufanayo, i-thermal conductivity iyahluka kunye nobukhulu beepores.
(1) Ubungakanani bepore 0.1mm.
0C ibe = 0.0244W/(m. K) 100C xa λ = 0.0314W / (m. K)
(2) Umbhobho oyi-2mm.
Kwi-0C = 0.0314W / (m, K) λ = 0. 0512W / (m. K) kwi-100C. K)
I-pore ye-pore ye-1mm, iqondo lokushisa likhuphuka ukusuka kwi-0C ukuya kwi-500C, ixabiso layo le-thermal conductivity linyuka ngamaxesha angama-5.3; pore ubukhulu 5mm, lobushushu liphakama ukusuka 0C ukuya 500C, ixabiso conductivity yayo thermal kwandisa amaxesha 11.7. Ngoko ke, i-pores enkulu kwi-fiber refractory, encinci i-bulk density ehambelanayo, kunye ne-thermal conductivity yanda.