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The hot and cold inlet temperatures to a concentric tube heat exchanger are Th,i=160°C, Tc,i=100°C, respectively. The outlet temperatures are Th,o= 120°C and Tc,o= 135°C.
Determine the heat exchanger effectiveness?
Determine the NTU?
A hollow magnesium shaft is rigidly bonded to a solid steel shaft and rigidly mounted between two supports. A torque of 500 NA·m is applied at the junction between the two shafts. What is the maximum shear stress in the magnesium?
What is the rated flywheel power for a CAT 834H 4 wheel tractor equiped with converter drive? What are the maximum speeds, for this machine in each of the four forward gears?
Water is flowing in a 6-cm diameter pipe at 20 m/s at 10?C. If the pipe enlarges to a diameter of 12-cm, calculate the reduced velocity. Also, calculate the mass flux rate and the flow rate.
Liquidated damages are intended to represent anticipated losses to the owner based upon circumstances existing at the time the contract was made. List at least five types of potential losses to the owner that would qualify for determination of suc..
The length of a reading room in a library is 10 m and its breadth is 8 m. Compute the distributed live load, assuming the basic value of the load to be 2873 N/m2.
A certain crop has a consumptive use requirement of 1.2 ac-ft of water per acre of crop land. The crop is planted on 780 acres of land. Precipitation falling during the growing season is 3.2 inches.
The owners wish to achieve an initial acceleration from rest of 22 ft/(sec^2) on a level paved surface. What is the minimum coefficient of road adhesion needed to achieve this acceleration
Estimate the maximum centric load that a 2-m-square footing can support using CSM. The minimum factor of safety is 1.25 and the settlement should not exceed 25 mm. Assume v' = 0.35.
the two particles A and B start at the origin O and trevel in opposite directions along the circular path at constant speeds va =.7 m/s and vb =1.5 m/s . Determine the time when they collide and the magnitude
The concentration of a pollutant along a quiescent water-containing tube is shown in Figure 4-23. The diffusion coefficient for this pollutant in water is equal to 10-5 cm2 s-1.
A deposite of soil is 16m deep and overlies an impermeable stratum , the coefficient of permiability is 10^-6 m/s. A sheet pile wall is driven to a depth of 12 m in the deposite. The difference in water level between the two sides of the piling is..
Design a cyclone that has a collection efficiency between 80% and 85% (use parcticle size distribution given below). you must assume a dpc of 4.2 microns,an inlet gas velocity of 25 m/s and a K of 15.The unit must handle 20,000 cfm of contaminated ..
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