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Problem 2.3:
Use the steam tables to do the following: a) A drum 3.5 m3 in volume contains steam at 1 bar, 210 °C. Determine the mass of steam in the drum. b) Wet steam with quality 15% vapor is to be stored under pressure at 20 bar in a thermally insulated vessel. What is the temperature? c) If the total mass to be stored is 525 kg, what is the required volume of the vessel? Problem 2.4: A closed tank contains a vapor-liquid mixture of steam at 45 bar with liquid content 25% by mass. a) The pressure is changed to 80 bar. What is the temperature? b) The pressure is changed until the contents become 100% saturated vapor. What is that pressure? c) With pressure held constant at 45 bar, steam is added to or removed from the tank, as needed, until the contents are 25% liquid by volume. Calculate the mass of steam that must be added or removed and report it as a percentage of the total mass originally in the tank.
A closed tank, 1 m3 in volume is filled with water at 1 bar 80 °C. A second identical tank contains 20 kg of steam at 20 bar. What is the mass of water in tank 1?
Develop a two-dimensional addressing system using a 6-to-64 decoder, a 64-word×128- bit matrix, and 16-input multiplexers. How many gates would such a system require?
If the slip-ring voltage is 400 V, when the rotor frequency is 120 Hz, at what speed must the rotor be driven in order to give 150 Hz at the slip-ring terminals? What will the slip ring voltage be in this case?
At 50 °C, 1.2 bar, the system n-pentane (1), n-hexane (2), and n-heptane (3) exists ion vapor-liquid equilibrium. The mole fractions in the two phases are: x1 = 0.6, x2 = 0.2, x3 = 0.2 in the liquid; and y1 = 0.87, y2 = 0.1, y3 = 0.03 ..
Calculate the work done in breaking up a drop of petrol of volume 1 cm3 into 109 drops. Surface tension of petrol is given as 26 dynes/cm.
A precipitate forms only when Na2SO4 is added. Which cations could be present in the unknown soluble ionic compound? Explain your answer, and write down any calculations you may have undertook in the process of answering it.
Volume of Air Required for Combustion of a Natural Gas Mixture, A natural gas has the following analysis by volume:
Steam in a closed system is compressed by reversible isothermal process in a heat bath at 250 °C, starting from an initial pressure of 15 bar. During the process, the steam receives 400 kJ/kg of work. Determine the final state and the amount of he..
If the origin, o, is located at the wing tip and the leading & trailing edge curve is given above, find the constant c at the wing root and then calculate the chord of the wing at position 2 and position 3 as indicated in figure 1. (Marks Breakdow..
Her model indicated that if Stogy hired two rollers per week during the entire first year, inventory would stand at 2,697,000 cigars by year's end.
Estimate a value for the total project cost that will give 98% confidence that the project can be carried out within the amount estimated.
A plant has a batch of 100 kmol of a liquid mixture containing 20 mol% benzene and 80 mol% chlorobenzene. It is desired to rectify this mixture at 1 atm to obtain bottoms containing only 0.1 mol% benzene. The relative volatility may be assumed con..
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