Task4 [Pass Criterion P8] A Fiat factory smelting furnace is fuelled with propane gas to melt Aluminium ingots (shown below) for engine cylinder head manufacturing similar to that shown in the image below. The furnace is loaded up with 100 aluminium ingots each of mass 20 kg. (a) (b) Al Ingots Al Cylinder Head Fiat Spyder Calculate the total energy that must be supplied by the furnace to bring the ingots up to melting point and then to melt the ingots completely. Before being placed in the furnace the ingots are stored at 10°C. Use the data provided below. [P8] A standard aluminium ingot is 1000 mm in length at 20°C. When the ingots reach a temperature of 500°C. Calculate the increase in length (the extension) due to the thermal expansion of an ingot assuming the ingot is free to expand [P8] DATA: Melting point of aluminium Specific heat capacity for aluminium (c₂): Latent heat of melting for aluminium (L): Modulus of elasticity for aluminium: Coefficient of linear expansion for aluminium: Calorific value for propane Ingot cross sectional area 660°C 0.91 kJ/kgk 321 kJ/kg 69 GPa 22.2 x 10-€ /°C 49.93 MJ/kg 0.019 m² Checklist of evidence required: Show full working out calculations in determining what has been asked in parts a to c above.

Fig: 1