Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A helical cooling coil of 150 m in length and 12 cm in diameter inside a fermenter was used to maintain the temperature of a fermentation broth at 37 degrees C. When the coil was totally clean, only 15 kg/s cooling water at 12 degrees C was required to be circulated through the coil for controlling the fermentation temperature. The exit water temperature was 36 degrees C.
A) How much heat was removed to maintain the temperature of fermentation broth at 37 degrees C?
B) After a given period of time of operation, a fouling layer was formed on the wall of the coil on the fermentation broth side and 20 kg/s cooling water at the same temperature of 12 degrees C must be circulated through the coil to maintain the fermentation temperature. What was the outlet water temperature after fouling?
C) What were the overall heat-transfer coefficients before and after fouling?
D)The diameter of the fermenter is 3 m. The fermenter is mixed using a turbine impeller 1 m in diameter at 60 rpm. The fermentation broth has the following properties: bulk viscosity = 5 x 10^-5 Pa*s, density is 1000 kg/m^3, and thermal conductivity of the bulk fluid is 0.7 W/m*C. Neglecting viscosity changes at the wall of the coil, what is the heat-transfer coefficient on the side of the fermentation broth?
A large drainage channel has a trapezoidal cross section with a bottom width of 75 feet and bank side slopes of 4:1 (H:V). If the normal depth of flow is 25 feet, compute the normal flow rate through the channel (Q in cfs).
One cubic meter of nitrogen at40oC and 340 kPa iscompressed isoentropically to 0.2 m3. Calculate the finalpressure and temperature when the nitrogen is reduced to that volume.
A proposed square footing carrying a total load of 900 kips is to be constructed on a uniform thick deposit of cohesionless soil. The soil's unit weight is 135 pcf, and its angle of internal friction is 38 degrees.
Consider high pressure steam at 400 degrees C and v =0.01567 m^3/kg. Obtain estimates of the pressure using (a) the van der Waals equation (b) the redlich-kwong equation. The actual pressure is 150 bar.
The head difference between manometer levels was 4.9 cm during the test, and the water temperature was 20 degrees celcius. If it took 152 second for 500 ml of water to discharge, determine the soil's coefficient of permeability.
A W16 x 36 simply supported beam is 30 ft long and supports auniform dead load of 970 lb/ft, a roof live load of 240 lb/ft and asnow load of 270 lb/ft. Is this beam adequate to support the load
While designing a shock absorbing bumper for a 5-Mg rail car, the spring used for the bumper follows a nonlinear relationship of F = ks2 where F is the force in Newtons and s is the compression distance in meters.
question 1 ndash the pipe shaft of the auger rotating at a constant angular velocity is subject to the axial force and
Two reservoirs, which differ in surface elevation by 40m, areconnected by 350m of new pipe of diameter 8cm. If the desired flowrate is at least 500N/s of water at 20 degrees C. can the pipematerial be made of
a 10 mm diameter jet of water is deflected by a homogeneous rectangular block (15 mm by 20 mm by 100 mm) that weighs 6 N. Determine the minimum volume flow rate needed to tip the block over
A trough is 5 feet long and 1 foot high. The vertical cross-section of the trough parallel to an end is shaped like the graph of y=x6 from x=?1 to x=1 . The trough is full of water. Find the amount of work in foot-pounds required
At a point in a saturated normally consolidated clay layer the soil is subject to an in-situ vertical effective stress of 50kPa. The soil at the point has a moisture content of 44% and a compression index of 0.45. The effective stress at the point is..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd