An industrial melting furnace with an input power rating of 26kW has the capacity to melt aluminium at a rate of 45kg per hour. Calculate the thermal efficiency of the melting process if 45kg of aluminium is raised from 20C to melting point. Take the specific heat capacity of aluminium to be 920 J kg^-1 K^-1 and the melting point of aluminium as 660C.

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To calculate the thermal efficiency of the melting process we first need to determine the amount of ... View the full answer