Ubudlelwano phakathi kokuqhuba kokushisa kwezinto zokushisa bungu-λ=k/(ρ×c), lapho u-k emele ukuqhubela kokushisa kwezinto, u-ρ umele ubuningi, kanti u-c umele ukushisa okuthile.
1. Umqondo wokuqhuba ukushisa
Ezintweni zokushisa, ukuhanjiswa kokushisa kubhekisela ekhonweni lokushisa ngeyunithi ngayinye yezinto ezibonakalayo ukudlula ezintweni ezibonakalayo ngesikhathi seyunithi, okungukuthi, izinga lokudlulisa ukushisa. Ngokuvamile kuvezwa ukugeleza kokushisa ngeyunithi ngayinye ngesikhathi seyunithi lapho umehluko wokushisa ungu-1K, kanti iyunithi ingu-W/(m·K). Ubukhulu bokuhanjiswa kokushisa buxhomeke ekuhanjisweni kokushisa kanye nomehluko wokushisa kwezinto ezibonakalayo.
2. Ifomula yokubala yokuqhuba ukushisa
Ukushisa kwezinto zokushisa kuhlobene nobuningi, ukushisa okuthile kanye nokushisa kwezinto, futhi ubudlelwano phakathi kwazo buyi: λ=k/(ρ×c).
Phakathi kwazo, u-k umele ukuqhutshwa kokushisa kwezinto, iyunithi ingu-W/(m·K); u-ρ umele ubuningi, iyunithi ingu-kg/m³; u-c umele ukushisa okuthile, iyunithi ingu-J/(kg·K). Le fomula isitshela ukuthi uma sifuna ukunciphisa ukuqhutshwa kokushisa kwezinto zokushisa, sidinga ukunciphisa ubuningi, amandla okushisa athile kanye nokuqhutshwa kokushisa kwezinto.
3. Izici ezithinta ukuqhutshwa kokushisa
Ukushisa kwezinto zokushisa kuthinteka yizici eziningi, njengezinga lokushisa, izakhiwo zezinto (njengesakhiwo sekristalu), ukwakheka kwamakhemikhali kwezinto, ukusebenzisana kwezinto, njll. Ngaphezu kwalokho, ubuningi, okuqukethwe kwamanzi, ukugoba kanye nezinye izilinganiso zezinto zokushisa kuzothinta nokushisa.
Isikhathi sokuthunyelwe: Jan-20-2025
