nūhou

ʻO ke olonā paʻakikīMa ke ʻano o ka hoʻoili wela hiki ke hoʻokaʻawale ʻia i kekahi mau mea, ka hoʻoili wela radiation o ka porous silo, ka ea i loko o ka porous silo conduction wela a me ka thermal conductivity o ka fiber paʻa, kahi i hoʻowahāwahā ʻia ai ka hoʻoili wela convective o ka ea. Loaʻa ka pilina pili i ka bulk density a me ka mahana, ʻo ke kiʻekiʻe o ka mahana, ʻo ka haʻahaʻa o ka bulk density o ka hihia, piʻi ka ratio o ka hoʻoili wela radiation. No nā huahana fiber refractory, ʻo ka bulk density ma lalo o 0.25g/cm ', ʻoi aku ka porosity ma mua o 90%, hiki ke ʻike ʻia ke ʻano kinoea e like me ka hoʻomau, hiki ke ʻike ʻia ke ʻano paʻa e like me ka discontinuous, no laila he liʻiliʻi ka conductivity thermal paʻa o ka fiber.
Inā mai ke kumumanaʻo wale nō he liʻiliʻi ka nui o ka nui, nui ka conductivity thermal, nui ka nui o ka nui o ka nui o ka nui o ka nui o ka nui o ka thermal conductivity; ʻaʻole hoʻi kēia e kūlike me ke kūlana maoli, e like me ka ʻokoʻa o ka ʻike o ka pōpō slag, ʻoiai inā like ka nui o ka nui, ʻokoʻa ka helu o nā fibers i kēlā me kēia leo, no laila ʻaʻole like ka porosity i kēlā me kēia leo, no laila e ʻokoʻa ka conductivity thermal. Eia naʻe, hiki ke hōʻuluʻulu ʻia nā hopena qualitative penei.
1. ʻO ke alakaʻi wela onā olonā paʻakikīemi iho me ka piʻi ʻana o ka nui o ka paʻapū, a emi mālie ka emi ʻana, akā i ka wā e hiki ai ka nui o ka paʻapū i kahi laulā, ʻaʻole emi hou ka conductivity thermal a loaʻa iā ia ke ʻano e piʻi mālie.
2. Ma nā mahana like ʻole, aia kahi conductivity thermal liʻiliʻi loa a me kahi density liʻiliʻi e pili ana. Hoʻonui ka density e pili ana i ka conductivity thermal liʻiliʻi me ka piʻi ʻana o ka mahana.
3. No ka nui like, ʻokoʻa ka conductivity thermal me ka nui o nā pores.
(1) Ka nui o nā lua 0.1mm.
0C i loko = 0.0244W/(m. K) 100C i ka wā λ = 0.0314W / (m. K)
(2) Ka puka 2mm.
I loko ma 0C = 0.0314W/(m, K) λ = 0. 0512W/(m . K) ma 100C. K)
ʻO ke anawaena o nā pore he 1mm, piʻi ka mahana mai 0C a i 500C, piʻi ka waiwai o kona conductivity thermal he 5.3 manawa; ʻo ke anawaena o nā pore he 5mm, piʻi ka mahana mai 0C a i 500C, piʻi ka waiwai o kona conductivity thermal he 11.7 manawa. No laila, ʻo ka nui o nā pores i loko o ka fiber refractory, ʻoi aku ka liʻiliʻi o ka nui o ka bulk, a piʻi ka conductivity thermal.