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Saturated steam (at 20 bar) is used to heat up a toluene stream from 40oC, 1 bar to 150oC, 1 bar in a heat exchanger. The toluene stream is flowing at a rate of 100 kg/min. Steam leaves the heat exchanger as a saturated liquid at 20 bar. Draw a sketch of this system. Make sure you list your assumptions. Find the following:
a) The outlet volumetric flow of toluene from this process in m3/hr.
b) The amount of heat required to heat up the toluene in kW.
c) The mass flow rate of steam that is required to heat up the toluene in kg/hr.
d) The volumetric flowrate of steam at the inlet conditions in m3/hr.
e) What is the approximate maximum temperature you could heat the toluene to with the steam (at 20 bar)? Why?
f) Heat exchangers can be arranged in either counter current mode (where the hot and cold fluids are fed at opposite ends of the heat exchanger) or co-current mode (where the hot and cold fluids are fed at the same inlet as the heat exchanger). Sketch each option and discuss whether you think counter current or co-current is more effective?
A concrete mix with a 3-inch slump, w/c ratio of .50, and sand with a finesse modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate per cubic yard. To adjust the mix so as to increase the compressive strenght
On a 20 ft cantilever beam, Load W1=200 or W2=500 or both may be applied at the midpoint B or at the end of the beam C. The bending moment induced at th fixed support A, MA, will depend on the magnitude of the loads at B and C.
A car is traveling up a 3% grade on a road that has good, wet pavement. The engine is running at 2500 rpm. The radius of the wheels is 15 inches, the driveline slipage is 3% and the overall gear reduction ratio is 2.5 to 1
What is the capacity of the pump required to supply maximum required discharge to the model, in CFS The length of time the model must be operated to check the equivalent of 36 hours of operation for the prototype operation, in decimal format hours..
Each exerts a force of 600 N directed at a t= 20.0° anglerelative to the forward motion of the boat. If the boat moves withconstant velocity, find the resistive force exerted by the water on the boat.
Should Bernard bid for the project assignment? Why or why not? Does Bernard have an unfair advantage over firms having designed the project on which he wants to bid?
A company manufactures a brand of light bulbs with a lifetime in month that is normally distribute with a mean=3 and a variance=1. A consumer buys a number of these bulbs with the intention of replacing them successively as they burn out. The light b..
A tank with a 3m diameter has an 8 cm orifice at the bottom. The tank is currently filled with water to a height of 2.5m above the orifice. If the orifice is opened, how long will it take until the height is 1 m.
Groundwater in Taupe, Arizona, initially contains 1.8 mg/L of iron(III). What must the pH be raised to in order to precipitate 0.3 mg/L of the iron
A thin wire ring, 3 cm in diameter, is lifted from a water surfaceat 20 C (DEGREE CENTIGRADE). Neglecting the wire weight, what isthe force required to lift the ring? is this a good way to measuresurface tension? should the wire be made of any partic..
Calculate the viscous drag force on this plate, assuming boundary-layer flow with free-stream velocity of 15 ft/s and plate dimensions of L = 8 ft and W = 4 ft.
What force is necessary to lift a thin 25-mm diameter ring out of :
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