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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.
Typical towns in states with big plains like Texas need an elevated tank to supply tap water. Below there is a picture of a typical elevated tank. If we approximate the tank as a cylinder with a diameter of 50 ft and a height of 25 ft, answer the fol..
A flat disk of outer radius b-125mm and inner radius a=25mm is shrink-fitted onto a shaft of radius 25.05mm. Both members are made of steel with E=200Gpa, v=0.3, and p=7.8 KN.s2/m4. Determine (a) the speed in rpm at which the interface pressure becom..
It is proposed to manufacture glass beads of 0.5mm by spraying them in 20 degree C air and allowing them to harden as they fall to the ground. Assume that the initial temp of the glass bead is 500 degrees C. The bead air heat coefficient h=324 W/m^2K..
calculate the average distance moved in one day by smoke particles in air for the following cases a smoke diffuses in
a wall has a total r-value of 15. determine the annual cost of the heat loss per square foot in a climate having 5000
a 100 gram ball moving at a speed of 7.4 ms strikes a 1.1 kg plate supported by springs. assuming that no energy is
consider an ideal gas-turbine cycle with two stages of compression and two stages of expansion. the pressure ratio
a one shell two tube pass surface condenser is required to handle the exhaust from a steam turbine developing 14 300 kw
What is the nature of the process fluid and what are the objectives of the two sample points and in what way do the samples reaching the instruments differ?
suppose that a nuclear plant generates heat in the amount of 2 x 107 j from its fuel rods at a temperature of 1200c and
Air enters a turbine at 40 kN/m2, 900 C, and leaves at 10 kN/m2. The flow is reversible and adiabatic. Inlet velocity is quite low and outlet velocity is 150 m/s through a cross-sectional area of 0.20 m2. Calculate the power output in kW.
explain the differences between the plane stress fracture toughness and the plane strain fracture toughness. for a
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