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Problem 2.1:
a) Use the steam tables to determine the phase of water (liquid or vapor) at following conditions: 25 °C, 1 bar; 80 °C, 10 bar; 120 °C; 50 bar. b) The vapor pressure of bromobenzene at 40 °C is 10 mm Hg. Determine the phase of bromobenzene at 40 °C, 1 atm. c) The normal boiling point of fluorobenzene is 84.7 °C. What is the phase of fluorobenzene at 25 °C, 1 atm? Problem 2.2:
Determine the temperature and phase of water from the following information. If the phase is a vapor-liquid mixture, report the fraction of vapor and liquid. a) The specific volume of water is 100 cm3/g and the pressure 40 bar. b) The specific volume of water is 100 cm3/g and the pressure 6 bar.
Explain what is meant by the term Threshold Limit Values (TLVs). Describe briefly the different TLVs used by Industrial Hygienists. Outline the strengths and weaknesses of these occupational exposure limits and illustrate how they may best be u..
The horsepower output from the prime mover to drive the generator at this load.
Calculate the average mechanical torque needed to turn the coil and generate power for the resistor. Identify the action of the device as that of a motor or a generator.
The Brayton cycle has the same 4 processes as the Rankine cycle, but the T-S and P-V diagrams look very different, why is that?
Find the total core loss if the frequency is increased to 400 Hz.
Estimate a value for the total project cost that will give 98% confidence that the project can be carried out within the amount estimated.
An investigation of a proposed investment has been made
If the container holds 1.3 kg of dry air, what are the final specific and relative humidities of the air in the container? what is the dew point?
Design a suitable sieve plate for conditions below the feed point. Equilibrium data for the system ethanol-water, at 760 mmHg, mol fractions ethanol:
For the conditions indicated in Prob. 7, prepare a log-log plot of fluid velocity in feet per second versus optimum economic pipe diameter in inches. The plot should cover a fluid-velocity range of 1 to 100 ft/s and a pipe-diameter range of 1 to 1..
Find the total line current drawn by the motor when the developed torque is one-half the rated value.
Water (1.25 kg/s) is to be heated from a pipeline temperature of 15°C to 85°C using superheated steam (13.75 kg/s) at 550°C and 3 MPa in a steady-state process to produce 15 kg/s of heated water. The heating is to be done in a mixing tank by directly..
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