A steam pipe with an exterior temperature 120◦C and outside diameter 10 cm is covered with a 5 cm layer of asbestos (k = 0.15 W m−1 K −1 ) insulation. If the outside surface of the insulation is at 35◦C, calculate the heat transfer rate from the steam pipe per unit length of pipe. Calculate the thermal resistance of the insulation for a unit length of pipe

Water in a partially filled large tank is to be supplied to the roof top, which is 8 m above the water level in the tank, through a 2.2-cm-internal-diameter pipe by maintaining a constant air pressure of 300 kpa (gage) in the tank. if the head loss in the piping is 2 m of water, determine the discharge rate of the supply of water to the roof top in liters per second.

Water at the rate of 1 kg/s is forced through a tube with a 2.5 cm inner diameter. the inlet water temperature is 15°c, and the outlet water temperature is 50°c. the tube wall temperature is 14°c higher than the local water temperature all along the length of the tube. what is the length of the tube?

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero