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In the manufacture of aniline, liquid nitrobenzene at 20 ŽC is fed to a vaporiser where it is vaporised in a stream of hydrogen. The hydrogen stream is at 30 ŽC, and the vaporiser operates at 20 bar. For feed-rates of 2500 kg/h nitrobenzene and 366 kg/h hydrogen, estimate the heat input required. The nitrobenzene vapour is not superheated
One mol of methanol vapor is cooled under constant pressure in a closed system by removing 25000 J of heat. Initially, the system is at 2 bar, 200 °C. Determine the final temperature.
Crude dichlorobenzene is pumped from a storage tank to a distillation column. The tank is blanketed with nitrogen and the pressure above the liquid surface is held constant at 0.1 bar gauge pressure. The minimum depth of liquid in the tank is 1 m.
Estimate the rate of heat loss per metre length of pipe - Explain why the thermal resistance of the pipe wall can be ignored.
Develop a mathematical model (differential and algebraic equations) that describes the exit temperature if heat losses to the ambient occur and if the ambient temperature (Ta) and the incoming stream's temperature (Ti) both can vary
10g of steam at l00°C and a pressure of one atmosphere condensing into water at the same temperature and pressure. (The latent heat of vaporization of water is 22571 Jg^-1).
Assuming the compound contains one cobalt atom per formula unit, what is the molecular formula?
At an ice cream there there are 10 flavors of ice cream, four toppings, three types of sprinkles, and either whipped cream or chocolate sauce. How many combinations of ice cream are there?
What is the resultant force of the entire system? What are the magnitude and direction of acceleration of the weights?
Natural gas composed of 60. mol% methane, 30. mol% ethane, and 10. mol% propane at 25 °C and 500. psia is fed at a rate of 50. m3/hr into a boiler. In the boiler it is blended with enough air to provide 20% excess oxygen and combusted.
A 60-Hz, three-phase transmission line has a total per-phase series impedance of 35+j140 Ω. If it delivers 40 MW at 220 kV and 0.9 power factor lagging
Write the differential equations that describe the system.
Determine the resultant line current and power factor.
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