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Starting with the full expression for steady-state, steady flow conservation of energy, apply any assumptions and simplify. Clearly state your assumptions. Using this expression, determine the capac
The NIST online database to get the enthalpy and density of water for the given conditions. Determine the mass flow rate of the water in kg/min and the diameter of the pipeline.
A power cycle receives heat from the storage unit, generates electricity at the rate of 570 kW and discharges heat to the atmosphere (20°C). For operation at steady state, calculate the theoreti
Heat from a hot source that is 100 kPa steam going from saturated vapor to a saturated liquid. 1 Mw of power is produced. What is the minimum mass flow rate of the steam if heat is discharged to a
The flue gas leaves at a pressure of 100 kPa and a temperature of 260°C. a. Calculate the flue gas composition (amount of each component) in kg-mol. b. What is the volume of the flue gas in m3 p
The rest exits at a different location at 0.10 bars, a quality of 85%, and a velocity of 500 m/s. Assuming circular cross section pipes, determine the diameter in meters of the exit pipes.
Find (a) the ratio of mass flow rate of the cooling water to the mass flow rate of the steam; and (b) the rate of energy transfer from the steam to the cooling water in KJ/kg of steam passing throug
Heat transfer from the compressor to the surroundings occurs at a rate of 180 KJ/min, Assuming an ideal gas, find the power input to the compressor in kW.
Two support rods hold the shelf each rod as a diameter of 12.00mm the center of gravity of the crates is the middle of the shelf. Compute the stress in the middle of the rods.
Determine the angular speed of the object (in rpm): Determine the linear speed v of the object: Determine the tension T in the string.
The coefficient of kinetic friction between B and C is 2.0, determine (a) the velocity of the bullet and B after the first impact, (b) the final velocity of the carrier.
The tension in the middle vertical cable is 136N. Determine the tension in the other two support cables. One of the cables has a 15 degree angle and the other has a 40 degree angle.
Can you explain what happened, by eventually using a shear-force and bending moment diagram and the flexure formula?
Glycerin at 50 degrees F flows over a flat plate at free stream velocity of 6 ft/s. Determine the velocity and thermal boundary layer thickness 0.5 ft from the leading edge of the plate.
Your favorite physics book (total mass 2.4kg) is pushed across the floor at a constant speed by a force of F=26N at an angle of -42 degrees (aiming downward 42 degrees below the horizontal).
Determine the persons mass: b) Explain what would happen if the elevator was accelerating downward such that A is greater than or equal g: Justify your answer via newtons laws.
What is the composition of the gas in terms of mass fractions? What is the composition of the gas in terms of volume fractions?
A flywheel has its angular speed increased uniformly from 16rad/s to 70rad/s in 74s. If the flywheel has a diameter of 2 ft, determine the magnitude of the normal and tangential components of accel
Determine the final air pressure and temperature, and the final position of the piston (i.e. the distance between the bottom of the cylinder and the bottom of the piston, in the final state).
A tank contains 0.05m^3 of Nitrogen (R=0.2968kj/kg*k) at T=-21 degrees Celcius and P=10MPa. Assume a non-ideal gas. Find the mass of Nitrogen using data from the compressibility chart.
Water at 3 MPa and 160 degree C is produced from water at 2. 5 MPa and 40 degree C in an irreversible process at a rate of 5. 6 kg/s. Find the rate of entropy change of the process (kW/K).
The engine produces 75 kW of power and rejects heat into the cold reservoir at a rate of 9 kW. (a) Find the efficiency of the heat engine, (b) Is the engine reversible?
A heat engine of 30% thermal efficiency drives a refrigerator having a coefficient of performance of 4. Determine the ratio of the heat input to the engine to the heat remove from the cold body by
Consider a waterfall having a drop of 84.7m. (a) Determine the specific potential energy (J/kg) of the water at the top of the falls with respect to the base of the falls.
The work input to a steady flow water pump is 4500 J/kg, with the water entering the pump at 1 bar and 30C. Determine the exit pressure if the fluid temperature increases by 0.1 C during the process.