Discuss the below:
Q: A 1.4-kg aluminum household iron has a 500 W heating element. The surface area is 0.046 m2. The ambient temperature is 21°C and the surface heat transfer coefficient is 11 W/(m2 K). How long after the iron is plugged in will its temperature reach 104°C?
GIVEN
An aluminum household iron
Mass of the iron (M) = 1.4 kg
Power output (QG) i?? = 500 W
Surface area (As) = 0.046 m2
The ambient temperature (T?^?) = 21°C
The heat transfer coefficient (hc ) = 11 W/(m2 K)
ASSUMPTIONS
Constant heat transfer coefficient
The mass given is for the heated aluminum portiononly
