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Question
How to find the length? A shell and tube heat exchanger is to be designed to heat 2.5 kg/s of water from 15 to 85 C. The heating is to be completed by passing hot hydraulic oil flowing at 2.5 kg/s that is available at 250 C, throughout the shell side of the exchanger. The heat capacity of the oil is 2220 J/(kg - K). If the overall heat transfer coefficient is 350 W/m 2 - K, discourage mine the heat exchanger area, outlet oil temperature, and length of the tubes (thin walled, diameter = 22 mm) required-
(a) For one shell pass, 2 tube passes
(b) For one shell pass, 3 tube passes
(c) For two shell passes, four tube passes
A 48 kg skier skis directly down a frictionless slope angled at 13° to the horizontal. Assume the skier moves in the negative direction of an x axis along the slope. A wind force with component Fx acts on the skier.
explain how much charge is on each plate. What is the work done by the field on the electron.
A merry go round at a children's playground can be approximated as a uniform circular disc with a diameter of 3.72 m and a mass of 288 kg. A constant force of 178 N is applied perpendicular to the outer edge of the merrygoround. How long does it t..
An eye has trouble seeing an object closer than 60 cm but needs to see objects at 25 cm from it. find the focal length of a correctly prescribed contact lens
A river has a steady speed of 0.42m/s. A student swims upstream a distance of 1 km and swims back to the starting point. If the student can swim at a speed of 1.25 m/s in still water, how long does the trip take.
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 Newtons. How is the mass of the rock affected by its change in position
Electrons are ejected from a metallic surface with speeds ranging up to 4.60 × 105 m/s when light with a wavelength of 625 nm is used. What is the cutoff frequency for this surface
Fred and Barney are two electric charges that are to begin with held 1 meter apart and experience an electric repulsion of 10 pounds of force. What would be the force of repulsion between them be if the two were moved closer together so that they ..
Two small spheres of equal mass m are suspended from strings of length L. When the two spheres are each given an equal charge q they separate by a distance x, swinging out an angle theta from the vertical
A laser beam is incident at an angle of 29.2° to the vertical onto a solution of corn syrup in water. what is the index of refraction of the syrup solution
A person with mass m1 = 60 kg stands at the left end of a uniform beam with mass m2 = 107 kg and a length L = 3.5 m. What is the location of the center of mass of the system
A slit 0.240mm wide is illuminated by parallel light rays with a wavelength 540nm. What is the distance on the screen from the center of the central maximum to the first minimum
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