Problem 19.11: Water heater insulation
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Determine the conductivity of the 10-cm thick insulation around the red water heater shown (this is a cross section of a cylindrical water heater). Restart. Assume that all the power from the heater at the bottom of the water heater is delivered to the water to keep it at the same temperature (50oC in this case). Adjust the room temperature to see the change in power required from the heater (position is given in meters and temperature is given in degrees Celsius).
Problem authored by Anne J. Cox.