Calculate the time taken for a 25kW furnace having an overall efficiency of 80% to melt 20kg of particular metal with the initial temperature of 20°C. The specific heat capacity of this particular metal is 896J/chg.; the melting point of the same metal is 657oC and its specific latent heat of fusion 402000J/kg.

Answer rating: 100% (QA)

Given m 20 kg S 896 JkgC or 0896 KJkgC L 402000 Jkg 402 kJkg Q2 657C Q1 20C P 25kW 80 or 08 Step 1 ... View the full answer