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Superheated steam at 700 kPa and 553.15 K (280°C) flowing at the rate of 50 kg s-1 is mixed with liquid water at 313.15 K (40°C) to produce steam at 700 kPa and 473.15 K (200°C). Assuming adiabatic operation, at what rate is water supplied to the mixer? What is SG for the process? What is the irreversible feature of the process?
What is the minimum pressure that we must have at the exit of the compressor in order to achieve liquefaction?
Compute the increase in temperature and entropy if saturated liquid water at 10 kPa is pumped to a pressure of 9.0 MPa, if the pump is 75% efficient (where 100% efficiency would be reversible). You may use constant values and at these conditions.
Given the following experimentally determined standard molar entropies at 298.15 K and 1 bar, S [CH3OH]=126.8 J⋅K-1⋅mol-1 S°[CO]=197.7 J⋅K-1⋅mol-1
A larger distillation tower is needed for the same mixture, and it has been decided to use a 12-in. inside-diameter tower with the same type and size of packing.
The chemical reactor shown below has a cover (called a head) that is held in place by a series of bolts. The head is made of stainless steel (SG = 8.0), is 3 in. thick, has a diameter of 24 in., and covers and seals an opening 20in. in diameter.
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..
A reverse osmosis plant is to be designed to produce 50 kg/s of boiler feed water with less than 20 ppmw of NaCl starting from sea water that contains 3.5 wt% NaCl. The 40 m2 membrane modules operate at 60 atm and achieve a flux of 0.4 m3 /m2 .day..
No-load test: line-to-line voltage 400 V, input power 1770 W, input current 18.5 A, and friction and wind age loss 600 W
Temperature variations are small over the shaft cross section. Evaluate the temperature and conduction heat rate at the shaft-pipeline joint (x = 0) and at the shaft-ground interface (x = 1 m)
What is the rationale for claiming that the presence of a low temperature loss peak is a necessary and sufficient condition for good room-temperature impact strength
Assume the plant is built at time zero and begins operation at full rate in year 1. Assume the rate of corporate income tax is 35% and taxes must be paid based on the previous year's income.
Suppose that the adsorbate equation of state is given by z = 1 +ßn, where ß is a function of T only. Find the implied adsorption isotherm, and show under what conditions it reduces to the Langmuir isotherm.
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