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Example 8.4: Flash Separator
When the pressure of a compressed liquid is brought between the bubble point and the dew point, the liquid "flashes," that is, it partially evaporates, creating a vapor that is enriched in the more volatile components and aliquid that is enriched in the heavier components. This simple process provides partial separation of the components.A mixture of heptane/decane at 1.8 bar, 120 °C contains 80% by mol heptane. At what pressure should it be flashed to obtain a stream that is 90% rich in heptane? What are the composition of the liquid and the amounts of the two phases?
Calculate the ratio of the depletion region width W under a forward bias of 0.3 V to the equilibrium width W0, for a GaAs abrupt p-n junction with a doping level on the p-type side of NA= 2 x 1017 cm·3 and a doping level ..
The resistance of a ther mistor with a ß = 5500 measured at 188C is equal to 250 V. Find the temperature of the thermistor when the resistance is doubled.
Apply linear programming to this problem. A firm wants to determine how many units of each of two products (products X and Y) they should produce in order to make the most money. The profit from making a unit of product X is $190 and the profit fr..
A three-phase, wye-connected, cylindrical-rotor, synchronous motor, with negligible armature resistance and a synchronous reactance of 1.27 Ω per phase, is connected in parallel with a three phase, wye-connected load taking 50 A at 0.707 lagging p..
Make a list of the risks to society from the use of each type of power plant. With this knowledge, which type of radioactive decay has the net effect of changing a neutron into a proton? Which type of decay has the net effect of turning a proton i..
Should the second analysis be discarded based on a 0.95 probability level?
The thermal design of a heat exchanger to recover heat from a kerosene stream by transfer to a crude oil stream was carried out in. Make a preliminary mechanical design for this exchanger. Base your design on the specification obtained from the CA..
An experiment was performed to determine the effect of four different chemicals on the strength of a fabric. These chemicals are used as part of the permanent press finishing process. Five fabric samples were selected, and a randomized complete block..
A jacketed vessel is to be used as a reactor. the vessel has an internal diameter of 2m & it fitted with a jacket over a straight section 1.5m long. both the vessel & jacket walls are 25mm thick.
Briefly describe the path that a protein (e.g., a hormone) which is manufactured on the rough ER would take in order to leave the cell.
Carry out a sensitivity analysis on the adipic acid project described in Example 9.5. Investigate the sensitivity of the 10-year NPV to variation in total fixed capital (-20% to +50%), annual gross profit (-20% to +30%), and project construction s..
question 1 a the standard service illuminance for specific work activities is given in lux. what units are used in
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