izindaba

I-fibre ephikisayongesimo sokudluliselwa kokushisa kungahlukaniswa cishe zibe izakhi eziningana, ukudluliselwa kokushisa kwemisebe yesilo esinezimbobo, umoya ongaphakathi kwesilo esinezimbobo ukuqhutshwa kokushisa kanye nokuqhuba ukushisa kwefayibha eqinile, lapho ukudluliselwa kokushisa okuguquguqukayo komoya kunganakwa khona. Ubuningi kanye nokushisa kunobudlelwano obuxhomeke komunye nomunye, lapho izinga lokushisa liphakeme, ubuningi becala buphansi, isilinganiso sokudluliselwa kokushisa kwemisebe siyanda. Emikhiqizweni yefayibha ephikisayo, ubuningi benqwaba buvame ukuba ngaphansi kuka-0.25g/cm', ubuningi bungaphezu kuka-90%, isigaba segesi singabonakala siqhubeka, isigaba esiqinile singabonakala singapheli, ngakho-ke ukuqhubela ukushisa okuqinile kwefayibha kuncane kakhulu.
Uma nje kusuka embonweni wokuthi ubuningi be-bulk buncane, ukuguquguquka kokushisa kukhulu, ubuningi be-bulk bukhulu ukuguquguquka kokushisa kuncane; lokhu futhi akuhambisani nesimo sangempela, njengokuthi okuqukethwe kwebhola le-slag kuhlukile, noma ngabe ubuningi be-bulk bufana, inani lemicu ngeyunithi ngayinye lihlukile, ngakho-ke i-porosity ngeyunithi ngayinye ayifani, ngakho-ke kuzoba nomehluko ekuqhutshweni kokushisa. Kodwa-ke, iziphetho zekhwalithi zingafingqwa kanje.
1. Ukushisa kwe-thermalimicu ephikisayokwehla ngokwanda kobuningi, kanti ukwehla kwehla kancane kancane, kodwa lapho ubuningi bufika ebangeni elithile, ukuhanjiswa kokushisa akusanciphi futhi kuthambekele ekukhuleni kancane kancane.
2. Emazingeni okushisa ahlukene, kukhona ukuhanjiswa kokushisa okuncane kanye nobuningi obuncane obuhambisanayo. Ubuningi obuhambisana nokuhanjiswa kokushisa okuncane buyanda ngokushisa okwandayo.
3. Ngobuningi obufanayo, ukuhanjiswa kokushisa kuyahlukahluka ngobukhulu be-pores.
(1) Usayizi wembobo 0.1mm.
0C into = 0.0244W/(m . K) 100C uma λ = 0.0314W / (m. K)
(2) Imbobo engu-2mm.
Ku-0C = 0.0314W/(m, K) λ = 0. 0512W/(m . K) ku-100C. K)
Ububanzi bembobo bungu-1mm, izinga lokushisa likhuphuka kusukela ku-0C kuya ku-500C, inani lokuqhuba kwayo ukushisa likhuphuka izikhathi ezingu-5.3; ububanzi bembobo bungu-5mm, izinga lokushisa likhuphuka kusukela ku-0C kuya ku-500C, inani lokuqhuba kwayo ukushisa likhuphuka izikhathi ezingu-11.7. Ngakho-ke, lapho imbobo inkulu ku-fiber ephikisayo, kulapho ubukhulu be-bulk obuhambisanayo buncipha khona, futhi ukuqhubela kwayo ukushisa kuyanda.