Menene amfani da wutar lantarki mai narkewa don narke tan 1 na aluminum?

Ƙimar zafi na musamman na aluminum shine 0.88 × 103 J / (kg · ℃), ma’anar narkewa: 660.37 zafi na Fusion na aluminum shine 3.98 × 105J / kg,

Ana dumama tan 1 na aluminum daga (25°C) zuwa 660°C, sannan ya narke. Akwai sassa guda biyu na shayar da zafi, ɗayan kuma shine ɗaukar zafi ta hanyar dumama, ɗayan kuma shine zafin canjin lokaci.

Heating endothermic Q1=880×1000×(660-25)J=558800KJ

Canjin yanayin zafi Q2=1000×3.98×105=398000KJ

Jimlar zafi=558800+398000=956800KJ

Zafin a kowace kilowatt-hour shine 3600KJ, kuma aikin dumama yawanci yana kusa da 90%.

956800÷3600÷90%=295.31

Saboda haka, yana ɗaukar kusan 295 kWh don narke tan 1 na aluminum, wanda ƙila ba daidai ba ne. Ina fatan zan iya ba ku tunani.