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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 car moving at 10 m/s crashes into a barrier and stops in 0.050 s. There is a 20 kg child in the car. Assume that the child's velocity is changed by the similar amount as the car's in the similar time period.
Archer fish often prey for flies that hover above the water. The index of refraction of water is 1.33. what would be a "safe" horizontal seperation for the fly
A musician plays a string on a guitar that has a fundamental frequency of 330.0 Hz. The string is 65.2 cm long and has a mass of 0.268 g. At what speed do the waves travel on the string
A small camera has a lens with focal length f=15 mm has a movable lens that can be focused on objects as close as 20 cm or as far away as infinity (relative to f). What is the optimum lens-film distance
An object is placed 50 cm in front of a convex mirror and its image is found to be 20 cm behind the mirror. What is the lateral magnification
A total of 3.04 106 electrons are placed on an initially uncharged wire of length 1.23 m. find the magnitude of the acceleration of a proton
What is the frequency of string that was tightened.How high does it rise above the ground.
Does current through a power supply increase when parallel bulbs are added? what is the current through the power source
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. What is the change in entropy of the boiling water
draw a motion diagram, using the particle model, showing the cars velocity vectors as seen from a helicopter hovering over the highway.
A 100kg block is sitting at rest on a horizontal table. what is the force the table exerts on the block
A 13g bullet traveling 223m/s penetrates a 2kg block of wood and emerges cleanly at 160 m/s. If the block is stationary on the frictionless surface when hit, how fast (m/s) does it move after the bullet emerges.
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