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dC/dt+(Q+kV)/V=(QCi)/V
For a CSTR, obtain the time variable effluent concentration when the decay rate is zero order. You need to obtain the defining ODE, integrate it and use the initial condition to do this. Then get the steady state solution for this case and solve it for the tank volume
Photovoltaic array, Under insolation conditions of 500 W/m^2 (direct sunlight), and 10% solar cell efficiency
Find the magnitude and depth of the point of application of the force on the circular gate shown (circular gate at an angle of 60 deg.) if h(distance from top of gate to top of water)=5ft. and D(length of the gate)=4 ft.
How do the concepts of green design, industrial ecology, and sustainable developement differ from past approaches to engineering design Prepare a brief report on this topic using some specific examples for illustration.
determine the correspondig angular acceleration alpha of the beam, the acceleration of C, and the distance b from B to a point P on the beam centerline which has no acceleration
A room 4x5x6 meter is heated by a baseboard resistance heater. We want the heater to raise the room temperature from 7 to 23 deg C in 15 minutes. There are no heat losses from the room, and specific heat may be assumed constant. Power costs 15 cents ..
A permanent endowment at the University of Alabama is to award scholarships to engineering students. The awards are to be made beginning 5 years after the $10 million lump-sum donation is made
Assuming the kinetic and potential energy effects to be negligible, determine D) the isentropic turbine efficiency E) the entropy at the exit of the turbine, in kJ/kg K F) the rate of entropy production within the turbine
The centres of the piers in a bridge are 8.0m apart. The piers are each 0.8m wide. Water flow under the bridge with an upstream depth and velocity of 4.0m and 4.0m/s respectively. The pier has a drag coefficient Cd = 1.5.
A large rock became visible to a driver at a distance of 175 ft. Assuming a perception-reaction time of 0.8 s, an initial speed of 42 mi/h, a coefficient of friction of 0.5, and a level roadway, calculate the speed at impact.
A pile group consist of four piles in cohesive soil. Each pile's diameter is 0.4 m, and center to center spacing is 1.2 m. The ultimate capacity of each pile is 300 kN. Estimate the design capacity of the pile group, using a factor of safety of 2
A 0.5 m diameter concrete pipe (5.0 cm wall thickness with rigid pipe walls) carries water 600 m before discharging it into another reservoir. The surface elevation of the downstream resevoir is 55 m lower
a cu triaxial test with sigmac 20 psi is performed on a sand and a deviator stress of 80nbsppsi fails the specimen.
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