- 23
- Mar
Unganciphisa kanjani ukulahleka kwekhoyili yokungeniswa kwesithando somlilo nekhebula elipholiswe ngamanzi?
Ukwandisa ububanzi bekhoyili yokungeniswa kanye nekhebula elipholiswe ngamanzi kuzonciphisa kakhulu ukuminyana kwayo kwamanje, kunciphise ukulahleka kwamandla entambo yokuphakelwa kukagesi, futhi kuphinde kusize ekwehliseni izinga lokushisa lendawo yokusebenza yekhoyili yokungeniswa nekhebula lamanzi, futhi kunciphise ukwakheka isikali. Kuya
Ukusetshenziswa kwamandla kagesi kwekhoyili yokungeniswa ku-t℃ kutholwa ngefomula elandelayo:
W=I2R×10-3=I2P20L/A×[1+α(t-20)]
W kufomula engenhla ukusetshenziswa kwamandla wekhoyili yokungeniswa, KW;
I―layisha okwamanje, A;
R―Ukumelana kwekhoyili yokungeniswa ku-20℃, Ω·m 2.2×10-8;
L―ubude bekhoyili yokungeniswa, m;
A-indawo ephambanayo yekhoyili yokungeniswa, m2;
P20―Ukumelana nethusi kokuthi 20℃, Ω·mm2·m-1;
α―I-coefficient yezinga lokushisa lokumelana nethusi le-electrolytic, 4.3×10-3/℃.