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In a Carnot cycle, heat is supplied at 350 and rejected at 27 . The working fluid is water which, while receiving heat evaporates from liquid at 350 to steam at 350 . The associated entropy change i
Draw either a pv or Tv diagram for this problem. Calculate the mass of liquid, mass of vapor, and the total mass of water in the tank at the initial condition.
A garden hoses with an inside diameter of 5/8 inch is supplying water at a rate of 3 gallons per minute (1 ft3 = 7.481 gal). What is the Reynolds number of the flow?
To produce 2.45 x 109 W of electricity from the water's potential energy, what mass flow rate of water is required? [Assume all potential energy is converted to electricity.]
The spring has squared and ground ends and is made from ASTM A227 4.0mm wire, without presenting. Using a 15% clash allowance find the number of coils required.
A 19th-century piston engine ran on steam. The steam supply is at 5 bar and 350oC. The steam discharges to the atmosphere at 1 bar and saturation temperature.
You have been asked to design a set of pumps to transfer liquid from a storage tank into a distillation column. What design issues do you have to consider ?
Water at 20 degrees celcius flows by gravity through a smooth pipe from one reservoir to a lower one. The elevation difference is 60m. The pipe is 360 m long, with a diameter of 12cm. Calculate the
A flange is used for instrument connection for a system with a design temperature of 316°C (600°F) and a design pressure of 1000 kPa (145 psi).
A high strength steel has a yield strength of 1460 MPa and a KIC= 98 MPa m1/2. Calculate the size of a surface crack that will lead to catastrophic failure at an applied stress of half of yield stre
A cylinder/piston contains carbon dioxide at 1 MPa, 300oC with a volume of 200 L. The total external force acting on the piston is proportional to V3. The system is allowed to cool to room temperat
Calculate the steady rate of entropy production, s& (kJ/K/s), by the power unit & by the refrigeration unit. Entropy production is not a good thing. Find the amount of unnecessary or lost po
A power cycle operates between hot and cold reservoirs at 500K and 310K, respectively. At steady state the cycle develops a power outpoint of 0.1 MW.
Carbon monoxide in a piston-cylinder device is compressed from 1 bar and 37?C to 3 bar and 147?C. The compression process requires work input of 88 kJ/kg.
Plot the reciprocal lattice for a polycrystalline sample of a material with a simple tetragonal structure and lattice parameters a=3.0A and c=5.0A
Graphically determine the angular rotation required to orient the sample for 300 diffraction if a theta-2theta diffractometer is used.
A gondola on a ski lift is supported by two bent arms, as shown in Fig. 3. Each arm is offset by the distance b=180 mm from the line of action of the weight force W. The allowable stresses in the ar
A closed piston-cylinder with air expands and does 2000 ft-lbs of work. Heat is added in the amount of 4 btu. What is the change in internal Energy.
Determine the simplified structure factor equations for each cell and the positions (2theta values) that would be observed (F^2=0) on a powder pattern made with CuKalpha radiation.
A model (1/10 of scale) of a tractor-trailer rig is tested in a wind tunnel. Calculate the coefficient of drag assuming that the density of air is 1.25 kg/m^3.
100kPa and 22 °C air is contained in a rigid tank of 2 m3. There is supply line connected to the tank through a valve. If the valve opens, the air in the supply line with 600kPa and 22 °C fl
More heat is transferred to the air until the temperature becomes 1000 K. Show the processes on a P-V diagram and calculate the following The final pressure in the cylinder.
A mixing chamber steadily mixes a hot water stream at 80°C and 0.5kg/s rate with a cold water stream at 20°C. If the leaving mixture is at 42°C and mixing happens at 250kPa, determine t
A nozzle with inlet area of 800 cm2 and inlet steam velocity is 10m/s. The steam pressure is 800kPa and temperature is 400C at the inlet and the pressure and temperature change into 200kPa and 300&d
Knowing that the constant of eachspring is 2 kN/m, determine (a) the velocity of the block after ithas moved down 50 mm, (b) the maximum velocity achieved by theblock.