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Design a single pass shell and tube type heat exchanger which requires mh = 25 kg/s with Th,i = 30 C and mc = 75 kg/s with Tc,i = 20 C. What heat transfer rate is obtained using 150 2 m tubes (ID = 16 mm and OD = 19 mm with kw = 400 W/mK). The hot fluid is water and it flows in the tubes, while the cold fluid is a 50/50 mix of ethylene glycol and water which flows in the shell. Assume hc = 5000 W/m2K. Also, determine the minimum shell diameter assuming that the tubes are arranged in a square pattern with a pitch of 50 mm.
a pressure measurement system has the following specifications range 0 to 1 kpa linearity error 0.05 fso hysteresis
considerr mach 2 flow in a twodimensional rectangular channel of length 5 m and height 1 m. the bottom wall of the
A similar measurement is made applying the force parallel to one of the cube axes. Explain why the two measurements give different values of the elastic modulus.
a vertical piston cylinder assembly with a piston of mass 25 kg and having a face area of 0.005 m2 contains air. the
during a test of a metal bar it was foumd that an axial tensile force of 10000 lb resulted in an elongation of 0.023
today you have a savings account of 15 620. based on an annual interest rate of 4.2 what equal amount can you withdraw
a piston-cylinder device contains 1 kg of h2o. the water is at 800oc and a pressure of 20 mpa. heat transfer occurs
Consider a steam power plant that operates on the ideal reheat rankine cycle. Steam enters the high-pressure turbine at 6 mpa and 400°c and leaves at 2 mpa. Steam is reheated to 400°c and expands in the low-pressure turbine to 20 kpa.
tank that is initially evacuated is connected by a valve to an air supply line flowing air at 20 degree c 800 kpa. the
a pulley is attached to the ceiling rafter and a single rope is passed over the pulley so that a 5kg body b is
the following chemical reaction takes place in a bio reactor3a2b2 -gt2abab2the molecular weight of a is 10.0gmol and
Write a simple Matlab script to obtain the sample mean values with n = 4 for a total of 2000 sample combinations. A sampling combination from the population can be obtained by using: rand sample (population, 4, true). For each combination, the sample..
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