11.11 (USCS) An amount of titanium weighing 200 lb is heated to a pouring temperature of 3300°F. The unit heating and pouring energy required to raise the temperature of the aluminum to pouring temperature = 600 Btu/lb. The furnace generates 175 kW and has a thermal efficiency of 65%. Determine the (a) time required to heat the metal from ambient temperature (70°F) to pouring temperature and (b) cost of electricity to heat the metal if the hourly cost of electricity = $0.21/kWh.

11.11 (USCS) An amount of titanium weighing 200 lb is heated to a pouring temperature of 3300°F. The unit heating and pouring energy required to raise the temperature of the aluminum to pouring temperature = 600 Btu/lb. The furnace generates 175 kW and has a thermal efficiency of 65%. Determine the (a) time required to heat the metal from ambient temperature (70°F) to pouring temperature and (b) cost of electricity to heat the metal if the hourly cost of electricity = $0.21/kWh.

Welding: Principles and Applications (MindTap Course List)

8th Edition

ISBN:9781305494695

Author:Larry Jeffus

Publisher:Larry Jeffus

Chapter28: Filler Metal Selection

Section: Chapter Questions

Problem 11R: What are the advantages of refractory-type stages?

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