A heat exchanger is operated to heat water entering the tubes with two shell passes and 23 tube passes at 3 kg/s and 14 °C. The exhaust oil enters the shell at 3 kg/s and 200 °C. Determine the rate of heat transfer using (1) the LMTD method and (2) NTU method. The heat capacity for the water and oil are 4180 and 2200 J/kg·K, respectively. The overall heat transfer coefficient and surface area of tube are 300 W/m2 ·K and 20 m2

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

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

Give heat transfer applications for the following, (i) gas turbines (propulsion) ) gas turbines (power generation). (iii) steam turbines. (iv) combined heat and power (chp). (v) automotive engines