Engineering, 03.12.2019 07:31 sleimanabir
A50 mol% mixture of propane (1) and n-butane (2) enters an isothermal flash drum at 37°c. if the flash drum is maintained at 0.6 mpa, what fraction of the feed exits as liquid? what are the compositions of the phases exiting the flash drum?
work the problem in the following two ways.
a. use raoult’s law (use the peng-robinson equation to calculate pure component vapor pressures).
b. assume ideal mixtures of vapor and liquid. (use the peng-robinson equation to obtain fsat for each component.)
Answers: 2
Engineering, 03.07.2019 14:10
Line joining liquid phase with liquid and solid phase mixture is known as: a) liquidus b) solidus c) tie line d) none of the mentioned
Answers: 2
Engineering, 04.07.2019 18:10
Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
Answers: 1
Engineering, 04.07.2019 18:10
Shafts are machine elements that are used to a) carry axial loads b) direct shear loads c) transmit power d) rotate at constant speed e) none of the above circular and square shafts subjected to the same torque under the same circum behave a) the same way b) almost the same way
Answers: 2
Engineering, 04.07.2019 18:20
Agas mixture consists of 8 kmol of h2 and 2 kmol of n2. determine the mass of each gas and the apparent gas constant of the mixture.
Answers: 3
A50 mol% mixture of propane (1) and n-butane (2) enters an isothermal flash drum at 37°c. if the fla...
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