ịzụ ahịa

ozi

eriri refractoryn'ụdị okpomọkụ nyefe nwere ike roughly kewara n'ime ọtụtụ ihe, radieshon okpomọkụ nyefe nke porous silo, ikuku n'ime porous silo okpomọkụ conduction na thermal conductivity nke siri ike eriri, ebe convective okpomọkụ nyefe nke ikuku na-eleghara anya. Nnukwu njupụta na okpomọkụ nwere mmekọrịta na-adabere na ya, nke dị elu nke okpomọkụ, na-ebelata oke njupụta nke ikpe ahụ, oke nke nnyefe ọkụ radieshon na-abawanye. Maka ngwaahịa fiber refractory, njupụta dị ukwuu na-adịkarị n'okpuru 0.25g / cm ', porosity dị n'elu 90%, a na-ahụ oge gas ka ọ na-aga n'ihu, a pụrụ ịhụ akụkụ siri ike dị ka nkwụsị, ya mere, ike ọkụ ọkụ nke eriri ahụ dị ntakịrị.
Ọ bụrụ na nanị site na tiori na nnukwu njupụta bụ obere, thermal conductivity bụ nnukwu, nnukwu njupụta bụ nnukwu thermal conductivity bụ obere; nke a ekwenyeghịkwa na ọnọdụ ahụ n'ezie, dị ka ihe ọkpụkpụ slag dị iche iche, ọ bụrụgodị na nnukwu njupụta bụ otu, ọnụ ọgụgụ nke eriri kwa otu olu dị iche iche, nke mere na porosity kwa otu olu abụghị otu, ya mere a ga-enwe ọdịiche dị na conductivity thermal. Agbanyeghị, enwere ike ichikota nkwubi okwu qualitative dị ka ndị a.
1. The thermal conductivity nkeeriri refractoryna-ebelata na mmụba nke njupụta, na mbelata na-ebelata nke nta nke nta, ma mgbe njupụta ahụ rutere n'ókè ụfọdụ, okpomọkụ adịghịzi ebelata ma nwee ọchịchọ ịbawanye nwayọọ nwayọọ.
2. Na okpomọkụ dị iche iche, enwere opekempe thermal conductivity na njupụta kacha nta kwekọrọ. Njupụta kwekọrọ na opekempe thermal conductivity na-abawanye na okpomọkụ na-abawanye.
3. Maka otu njupụta ahụ, conductivity thermal dị iche iche na nha nke pores.
(1) Nha oghere 0.1mm.
0C banye = 0.0244W/(m. K) 100C mgbe λ = 0.0314W / (m. K)
(2) Oghere 2mm.
Na na 0C = 0.0314W/(m, K) λ = 0. 0512W/(m. K) na 100C. K)
Dayameta pore nke 1mm, okpomọkụ na-ebili site na 0C ruo 500C, uru conductivity ya na-abawanye ugboro 5.3; dayameta pore nke 5mm, okpomọkụ na-ebili site na 0C ruo 500C, uru conductivity nke thermal ya na-abawanye ugboro 11.7. Ya mere, ibu pores na eriri refractory, nke nta nke nta nke nta nke nta nke nta, na thermal conductivity na-abawanye.

Mmekọrịta dị n'etiti nnukwu njupụta na thermal conductivity nke fiberglass ákwà refractory emep uta


Oge nzipu: Nov-26-2024