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Reconsider Prob. 4-9. Using EES (or other) software, investigate the effect of pressure on the work done. Let the pressure vary from 400 kPa to 1200 kPa. Plot the work done versus the pressure, and discuss the results. Explain why the plot is not linear. Also plot the process described in Prob. 4-9 on the P-v diagram.
Prob. 4-9
A frictionless piston-cylinder device initially contains 200 L of saturated liquid refrigerant-134a. The piston is free to move, and its mass is such that it maintains a pressure of 900 kPa on the refrigerant. The refrigerant is now heated until its temperature rises to 70°C. Calculate the work done during this process.
Consider a house into which radon is emitted through cracks in the basement. The total volume of the house is 650 m3 (assume that the volume is well mixed throughout).
An intersection approach has three lanes, permitted left turns, and 6% left-turning volume with a through vehicle equivalent of 5.0 tvu/left turn. The saturation flow rate for through vehicles under prevailing conditions is 1,700 veh/hg/ln.
Use the moment-area method to find the maximum deflection at the middle of the beam. Assume that EI is constant, and neglect the weight of the beam.
The true azimuth of line AB is 193 degrees 20'. The angle measured counterclockwise between line AB and another line AC is 205 degrees 10'. The true azimuth of line AC is:
Is it possible (in this part of the world) for the sun to ever shine directly upon the OUTSIDE of a NORTH-facing wall of a home or other building? If so when?
A chemical plant uses a tube-within-a-tube counterflow heat exchanger to heat air with the use of steam. During steady state operation, the air flows into the exchanger at a rate of 5,000 kg/h and a temperature of 27C and exits at a temperature..
a well is contaminant with 340 mg/L of tetrachloride ( perchloroethylene). the water must be remediated to achieve a concentration of 0.2 mg/L ( the detention limit ).
The composite shaft is made of a steel sleeve, which is bonded to a brass core. The outer diameters of the two parts are d1 = 40 mm for the brass core and d2 = 50 mm for the steel sleeve.
There are three 18 mm diameter steel bolts that are attached to a plate. The plate can support up to a 110 KN load, and the ultimate shear stress is 360 MPa. Determine the factor of safety for the given design.
A pressure gage at elevation 4.8 m on the side of a storage tank containing oil reads 34.7 kPa.Another gage at elevation 2.2 m reads 57.5 kPa. Compute the specific weight, density, and specific gravity of the oil.
A cylindrical tank with inside diameter of 300mm and wall thickness of 5mm is subjected to an internal pressure of 2Mpa. The tensile stress in mpa in the wall of the tank is mostly near
Water is pumped from a reservoir whose surface elevation is 1390 ft to a second reservoir whose surface elevation is 1475 ft. The connecting pipeline is 4500 ft long and 12 in. in diameter.
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