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Our ESP is collecting 95% of the particles in our exhaust stream. We are under pressure to improve its performance. It has been suggested that if we were to cool the inlet gas fron the present 600F to 250F, the performance would improve. What is the estimated collection efficiency at 250F, if we keep the mass flow rate constant, do not change any of dimensions of the ESP, and if changing the temperature does not change the drift velocity,w?
Assuming steam to be an ideal gas, calculate its specific volume and density at a pressure of 90 lb/in^2 and a temperature of 650°F.
A company produces two kinds of septic tanks: type A and type B. Each type B tank takes twice as long to produce as a type A tank. If it only produced type A tanks, the company has the time to produce a maximum of 2000 tanks per week.
A constant-head permeability test was conducted on a sample of fine silica sand. The cross-sectional area of the sample was 60 cm2 and its length was 150 mm.
air enters a turbine operating at steady state at 8 bar, 1127 C and exits at 1.5 bar, 347 C. The heat transfer from the turbine to its surroundings is 10 kJ/kg of air flowing through the turbine.
A stone A is dropped from rest down a well, and in 1 second another stone B is dropped from rest. Determine the distance between the stones another second later.
Find the moist unit weight of sand in lb/ft^3compacted in the field at a relative density of 60%and moisture content of 10%Given Gs=2.65. Also calculate the maximum and minimum possible dry unit weights that the sand can have.
A breif explination on clay mineralogy including isomorphous substitution, specific surface, cation exchange capacity and their effect on clay properties.
If the weight flowrate into the elbow is 47 lbf/s, find the mass flowrate out of the elbow, the volume flowrate in and out of the elbow, and the average velocity in and out of the elbow.
Using darcy-weisbach equation, calculate the major friction head loss for a 24 inch diameter, 120 ft long pipe that can carry water with a flow rate of 5 cfs. Assume the temperature of water is 70 deg F and the roughness of the pipe is 0.0016 ft.
How many floors can be added to the building while maintaining the code required overturning factor of safety of 2.0 Assume the roof supports a wind load of 4 kips and all floors below support a wind load of 8 kips.
A cyclone is designed with an inlet width (W) of 12.0 cm and has four effective turns. The inlet gas velocity is 15.0 m/s and the particle density is 1.70 g/cm3. (a) Estimate the particle size that will be collected with 50 % efficiency.
Samples of a dry sand are to be tasted in a direct shear test and a triaxial test. In the triaxial test, the sample fails when the major and minor principal stresses are 140 psi and 40 psi, respectively.
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