Heat-transfer area and use of log mean temperature difference. a reaction mixture having a cpm = 2.85 kj/kg · k is flowing at a rate of 7260 kg/h and is to be cooled from 377.6 k to 344.3 k. cooling water at 288.8 k is available and the flow rate is 4536 kg/h. the overall uo is 653 w/m2 · k. for counterflow, calculate the outlet water temperature and the area ao of the exchanger. repeat for cocurrent flow.

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

Atmospheric air has a temperature (dry bulb) of 80° f and a wet bulb temperature of 60° f when the barometric pressure is 14.696 psia. determine the specific humidity, grains/lb dry air. a. 11.4 c. 55.8 d. 22.5 b. 44.1

Journeyman training is usually related (clo2) a)-to specific tasks b)-to cost analysis of maintenance task c)-to control process to ensure quality d)-to installation of machinery