Q1 A straight and horizontal pipeline with diameter of 0.8m conveys crude oil (density is 950 kg/mº.
kinematic viscosity is 1.2 x 10-5 m2/s). The pipe wall is assumed to be smooth and the
corresponding friction factor can be found from the Moody Diagram (in the Supplementary
Information sheet). To maintain the oil flow rate, pressure boosters are distributed every 20 km
along the pipeline.
(a) If the oil flow rate is 0.45 m/s, determine the flow state and the amount of pressure that
needs to be raised at each pressure booster.
[12/25]

Thermal stresses are developed in a metal when its a) initial temperature is changed b) final temperature is changed c) density is changed d) thermal deformation is prevented e) expansion is prevented f) contraction is prevented

Give three differences between corrosion of metals and the corrosion of ceramics? what is static fatigue?

Consider a power plant with water as the working fluid that operates on an ideal rankine cycle. it has a net power output of 45mw. superheated steam enters the turbine at 7mpa and 500°c (h=3411.4 kj/kg; s=6.8 kj/kg k) and is cooled in the condenser at a pressure of 10 kpa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. (a) show the cycle on a t-s diagram (a right schematic is fine - you do not need to calculate the temperatures at each point); (b)-determine the work done by the turbine and the pump in kj/kg; (c)-the mass flow rate of water used by the power plant; (d)-the thermal efficiency of the cycle; (e)-the temperature rise of the cooling water. assume the cooling water is incompressible with cp 4.18 kj/kg°c.