It is desired to transport liquid metal through a pipe embedded in a wall at a point where the temperature is 650 k. a 1.2‐m‐thick wall constructed of a material having a thermal conductivity varying with temperature according to k = 0.0073 (1 + 0.0054 t), where t is in k and k is in w/m ⋅ k, has its inside surface maintained at 925 k. the outside surface is exposed to air at 300 k with a convective heat‐transfer coefficient of 23 w/m2 ⋅ k. how far from the hot surface should the pipe be located? what is the heat flux for the wall?

Asingle-geared blanking press has a stroke of 200 mm and a rated capacity of 320 kn. a cam driven ram is assumed to be capable of delivering the full press load at constant force during the last 15 percent of a constant-velocity stroke. the camshaft has an average speed of 90 rev/min and is geared to the flywheel shaft at a 6: 1 ratio. the total work done is to include an allowance of 16 percent for friction a) estimate the maximum energy fluctuation b) find the rim weight for an effective diameter of 1.2 m and a coefficient of speed fluctuation of 0.10