Chapter 7, Problem 7.18E

For the flow in Example 10.5, the experimental values are h ≈ 32 ft, Po = 1.5 hp, and η = 71%. Those are for pumping water. If we use this pump to pump gasoline at Q = 100 gpm, what are the predicted values of h, Po and η?

Air at 38.0°C and 95.0% relative humidity is to be cooled to 16.0 °C and fed into a plant area at a rate of 510.0 m³/min. You may assume that the air pressure is 1 atm in all stages of the process. Physical Property Tables Condensation Rate Calculate the rate at which water condenses. i kg/min eTextbook and Media GO Tutorial Assistance Used.

Carbon dioxide (CO2) is a greenhouse gas that must be removed from coal-fired power plantexhaust before the exhaust can be discharged to the outside air. 150 mol/h of a gas stream containing10 mol% CO2 [C] and 90 mol% air [A] is contacted with a pure mixture of monoethanolamine (MEA)and water [MEA-W] (assume the MEA-W mixture is one component) at 40 °C and 10 atm in anabsorption column. It is desired to remove 92 mol% of CO2 from the air. L’/L’min is 1.45. Assumesolute free flow rates are constant, which means the MEA-water mixture is nonvolatile and air doesnot dissolve in the MEA-water mixture. Assume the column is isothermal at 40 °C and isobaric at 10atm. Graphs needed are provided at the end of this document.a) Draw a PFD and label using solute free flowrates and mole ratios b) Determine the minimum liquid solvent flowrate required (L’min) c) Determine the equation of the operating line d) How many stages (N) are required to get the desired separation?

How many horsepowers are required to compress 20 lbmol / h of helium (k = 1.666) from 1 atm at 68°F to 10 atm using; (a) An isothermal compressor? (b) An adiabatic compressor? (c) A two-stage, adiabatic compressor with optimum interstage pressure and intercooling to 68°F?   answers are a) 13gpm, b) 31.16hp, c) 24.11hp

heat and mass transfer:

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ANSWER ONLY ONE OF THE FOLLOEING QUESTIONS Question 2: 20 marks Answer the following If the pressure losses in the circulation system excluding the bit (Pe) can be related to the flow rate by P=0.02631xQ [P, in psi and Q in gpm]; the maximum Pump pressure (P,) is 5000 psi 1. Find the nearest standard nozzle size to be fitted in the bit necessary to deliver a maximum hydraulic horse power at bit (No of Bit nozzles = = 3)......"10 marks" 2. Find the nearest standard nozzle size to be fitted in the bit necessary to maintain a maximum impact force at bit (No of Bit nozzles = 4)......10 marks"