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1. An air compressor takes air in at the state of the surroundings, 100 kPa, 300 K. The air exits at 400 kPa, 200?C using 100 kW of power. Determine the minimum compressor work input.
2. The compressor in a refrigerator takes refrigerant R-134a in at 100 kPa, -20?C and compresses it to 1 MPa, 60?C. With the room at 20?C, find the minimum compressor work.
Obtain copies of your local zoning ordinance and building code (they may be in your library). Look up the applicable provisions of these documents for a specifi c site and building.
A solid titanium is titghly inserted into a hollow section of length l/2 and constan thickness t=7.5mm , and extends from end B towards end A. determine the shear streess and angle of twist at B.
A compressible 12-ft clay layer beneath a building is overlain by a stratum of sand and gravel and underlain by impermeable bedrock. The total expected primary consolidation settlement of the compressible clay layer due to the building load is 4.60 i..
At the end of 15 years, the first motor will have a salvage value of $50 and the second motor will have a salvage value of $100. consider the MARR to be 8%. (note : 1HP=0.7457 kw). Determine which motor should be installed based on the PW criterio..
1.How can the water pressure in a pipe be measured simply 2.What force causes the water pressure to fall as it flows along a pipe 3.How do you think the pressure drop will change when each of the three variables changes
the flow into the lake is from is from a stream is 300 m3/d andthe flow into the lake from runoff averages 20 m3/d. The lake is used for fishing by the local residents but the pesticides from local farms may damage the fish population.
Determine the minimum force P to prevent a 30kg rod AB from sliding on a wall. The contact surface at B is smooth, whereas the coefficient of static friction between the rod and the wall at A is Us=0.2.
What is the risk of constructing a harbor which will be unprotected from wave attack during its construction.
The company Eco-Safe is adding pollution control equipment to its process and reducing emission of pollutants. The annual waste disposal cost of the current process is $130,000 and the annual operating cost is $600,000
A circular concrete pipe (n = 0.012) carries a discharge of 450 cfs with a slope of 0.008 and is designed to run no more than 60% full (by depth). What diameter pipe would you recommend
determine the maximum torque T that can be applied according to the maximum-distortion-energy theory. Use a factor of safety of 1.5 against yielding.
Plot the distribution of vertical effective stress and porewater pressure with depth if the void ratio of the sand is 0.6 and the degree of saturation is 90%. Neglect pore air pressure
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