An AL disk with a diameter = 10 cm and thickness = 5 cm is cast of pure aluminum in a sand casting operation. Aluminum melts at 660C, but the pouring temperature will be 800C. The heat of fusion of aluminum = 398 J/g. Assume the specific heat has the same value for solid and molten aluminum. C = 0.23 Cal/gC= 0.879 J/gC Compute. a. the unit energy for melting and pouring. b. the total energy to heat the metal to the pouring temperature starting from a room temperature of 25C.
An AL disk with a diameter = 10 cm and thickness = 5 cm is cast of pure aluminum in a sand casting operation. Aluminum melts at 660C, but the pouring temperature will be 800C. The heat of fusion of aluminum = 398 J/g. Assume the specific heat has the same value for solid and molten aluminum. C = 0.23 Cal/gC= 0.879 J/gC Compute. a. the unit energy for melting and pouring. b. the total energy to heat the metal to the pouring temperature starting from a room temperature of 25C.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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An AL disk with a diameter = 10 cm and thickness = 5 cm is cast of pure aluminum in a
sand casting operation. Aluminum melts at 660C, but the pouring temperature will be
800C. The heat of fusion of aluminum = 398 J/g. Assume the specific heat has the same
value for solid and molten aluminum. C = 0.23 Cal/gC= 0.879 J/gC
Compute.
a. the unit energy for melting and pouring.
b. the total energy to heat the metal to the pouring temperature starting from a room
temperature of 25C.
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