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A single-pass shell-and-tube heat exchanger contains 60 steel tubes. The ID of the tubes is 0.732 in., and the OD is 1.0 in. The shell side of the exchanger contains saturated steam at 290°F, and water passes through the tubes. The unit is designed with sufficient tube area to permit 15,000 gph of water to be heated from 70 to 150°F. In the course of this design, an hd of 1500 Btu/(h)(ft2)(°F) was assumed to allow for scaling on the water side of the tube. The film coefficient for the steam is 2000 Btu/(h)(ft2)(°F). No safety factor other than the one scale value was used in carrying out the exchanger design. Estimate the temperature of saturated steam which must be used when the exchanger is new (i.e., no scale present) if the water enters the unit at a rate of 15,000 gph and is heated from 70 to 150°F.
Carry out a sensitivity analysis on the adipic acid project described in Example 9.5. Investigate the sensitivity of the 10-year NPV to variation in total fixed capital (-20% to +50%), annual gross profit (-20% to +30%), and project construction s..
A stream of propane is throttled from 4.298 bar and 450 K to 0.22 bar. This process is irreversible due to frictional losses at the nozzle. What is the final temperature of propane (after throttling)?
what horsepower motor will be required?
The volume of each stirred tank is 40,000 liters. In passingthrough this system, by how much has the activity decayed? The reaction follows first order kinetics with a constant density
Equal rates of mass transfer for the production of the fine chemical are required. This is often required for certain types of organic synthesis.
Descriptions of: indoor concrete maintenance chemicals used on indoor concrete flooring - high solids floor finish chemicals used on indoor concrete flooring
Assuming that the two unsealed faces of the wood immediately jump to an equilibrium moisture content of 10 lb H20 per 100 lb of dry wood, determine the time for the moisture to penetrate to the center of the slab (2 in. from either face). Assume a..
Find the minimum utility requirements for this process, for a minimum approach temperature of 10 °C.
Assuming that there are no other significant side reactions, calculate masses of alcohol and ether produced, per 1000 kg of allyl chloride fed to the reactor.
Component Mass in Final State, Please solve specific problem below rather than providing examples. A rigid vessel having a volume of 0.028m^3 initially contains a mixture at 21 degrees Celsius and 100 kPa consisting of 79% Nitrogen
Question -4 following gas phase reaction takes place at 500oc 4PH3 (g) ----( P4 (g) +6H2 (g) With rPH = 85h^-1*CPH3 What is the volume of the plug flow reactor operating at this temperature and 5.5 atm, giving 80% conversion for a feed of 2.5 kg-mol..
Design a storage and feed system for the sorbitol powder. Sorbitol has average bulk density 1.48 kg/liter, and can be assumed to have an average particle size of 200 μm.
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