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1. A brine solution is used as a cooling medium in a steel heat exchanger. The brine is circulated within the heat exchanger and contains some dissolved oxygen. Suggest three methods, other than cathodic protection, for reducing corrosion of the steel by the brine. Explain the rationale for each suggestion.
2. Suggest an appropriate material for each of the following applications, and, if necessary, recommend corrosion prevention measures that should be taken. Justify your suggestions.
(a) Laboratory bottles to contain relatively dilute solutions of nitric acid
(b) Barrels to contain benzene
(c) Pipe to transport hot alkaline (basic) solutions
(d) Underground tanks to store large quantities of high-purity water
(e) Architectural trim for high-rise buildings
the aim of this demonstration is to use measurements of the load required to propagate a crack tear in packaging tape
an air conditioner in the airport of timbuktu runs a cooling system using r-410a with a high pressure of 1500 kpa and a
A voltage signal is produced by a transducer. The signal contains its strongest frequency component at 50 Hz (amplitude = 5.0 V), plus a weaker component at the second harmonic (100 Hz) with amplitude 2.0 V. In addition, there is noise at 60 Hz with..
steam at 40?c condenses on the outside of a 5-m-long 3-cm-diameter thin horizontal copper tube by cooling water that
block a is dropping at a velocity of 600mmsec and acceleration of 100mmsec2. it is attached directly to an inner
Velocity and Acceleration Analysis of mechanism. The mechanism in Fig. 5.54 has the dimensions: AB=200 mm, AC=600 mm, BD=1000 mm, La=150 mm, and Lb=250 mm. The driver link 1 rotates with a constant angular speed of n=60 rpm. Find the velocities and t..
a machine part of mass 1.95 kg vibrates in a viscous medium. determine the damping coefficient when a harmonic exciting
two kilograms of refrigerant134a initially at 2 bar and occupying a volume of 0.12 m3 undergoes a process at constant
An automobile engine consumes fuel at a rate of 29 L/hr and delivers 60 kW of power to the wheels. If the fuel has a heating value of 44,000 kJ/kg and a density of 0.8 g/cm3, determine the efficiency of this engine, and draw a conceptual schematic of..
the ball is kicked with an initail speed of 8 ms at an angle of 40 degrees with the horizontal. find the equation of
3.33 kg of water fills a weighted piston cylinder device, at a temperature of 400 deg. C, The piston cylinder device now is cooled until is temperature is 170 deg C. Determine final pressure and volume of the water
Air at 90 kpa and -7 C enters an adiabatic diffuser steadily with a velocity of 180 m/s and leaves with a low velocity at a pressure of 100 kpa. The exit area of the diffuser is 5 times the inlet area. Determine (a) the exit temperature and (b) th..
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