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a continuous evaporator is being used to concentrate a scale-forming solution of sodium sulfate in water the overall
a solvent-extraction operation is carried out continuously in a plate column with gravity flow the unit is operated 24
a continuous evaporator is operated with a given feed material under conditions in which the concentration of the
derive an expression for the optimum economic thickness of insulation to put on a flat surface if the annual fixed
an absorption tower containing wooden grids is to be used for absorbing so in a sodium sulfite solution a mixture of
determine the optimum economic thickness of insulation that should be used under the following conditions saturated
a proposal has been made to use stainless-steel tubing as part of the heat-transfer system in a nuclear reactor high
for the design of internal-pressure cylindrical vessels the api-asme code for unified pressure vessels recommends the
six tanks of different constructional materials and six different materials to be stored in these tanks are listed in
a process for sulfonation of phenol requires the use of a 3000-gal storage vessel it is desired to determine the most
for each of the following materials of construction prepare an approximate plot of temperature versus concentration in
a manhole plate for a reactor is to be 2 in thick and 18 in in diameter it has been proposed that the entire plate be
what materials of construction should be specified for the thiophane process described in prob 20 of chap 2 note the
a multiple-effect evaporator is to be used for evaporating 400000 lb of water per day from a salt solution the total
prepare a plot of optimum economic pipe diameter versus the flow rate of fluid in the pipe under the following
for the conditions indicated in prob 7 prepare a log-log plot of fluid velocity in feet per second versus optimum
an organic chemical is produced by a batch process in this process chemicals x and y react to form chemical z since the
a centrifugal pump delivers 100 gpm of water at 60degf when the impeller speed is 1750 rmin and the pressure drop
a two-stage steam jet is to be used on a large vacuum system it is estimated that 9 kg of air must be removed from the
a slurry is filtered and the filter cake is washed by use of a plate-and-frame filter press operated at a constant
a slurry containing 1 lb of filterable solids per 10 lb of liquid is being filtered with a plate-and-frame filter press
a plate-and-frame filter press is used to filter a known slurry mixture at a constant pressure drop of 10 psi 50 ft3 of
a rotary filter with a total filtering area of 8 ft2 has been found to deliver 10 ft3 of filtrate per minute when
estimate the cost of the steel for the spherical storage tank in the preceding problem if the steel sheet costs 025 per
a spherical carbon-steel storage tank has an inside diameter of 30 ft all joints are butt-welded with backing strip if