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Estimate the annual emissions of CO2 and SO2 from a 1500 MW(th) steam generation plant if the boiler operates at 1800 K and 2 atm with 15% excess air. The coal used has 75% C, 5% H, 1.5% N, 2.5% S,
Calculate the power required to drive a steady-flow compressor if air flowing at a rate of 1kg/s enters at 100kPa, Temp=20C with a velocity od 60m/s and leaves at 240kPa.
What is the minimum flow rate of water required to scrub out 90.0% of the incoming NH3? L/hr. What is the mole fraction of NH3 in the scrubbed waste gas stream? mol NH3/mol waste gas.
A flue passing hot exhaust gases has a square cross section, 300mm to a side. The walls are constructed of refractory brick 150mm thick with a thermal conductivity of 0.85 W/m*K.
A gas within a piston-cylinder assembly undergoes a thermodynamic cylce consisting of three processes. process 1-2: compression with pV=constant, from p1=1bar , V1= 2m^3, V2= 0.2m^3, U2-U1=100kJ, pr
Determine the magnitude of the force p needed to start towing the 40-kg crate. Also determine the location of the resultant normal forceacting on the crate, measured from point A.
If the fluid removal rate is constant over the course of dialysis, what is the total volume of fluid removed from the blood stream during a 3.65 hour dialysis treatment?
An automobile travels at 30 mph, which is also the speed of the center C of the tire. If the outer radius of the tire is 15 in., determine the rotational velocity of the tire in the units of rad/s,
Derive a relationship that can be used to find the maximum thickness of the coating that can be applied such that it will not drip before it cures.
What compressive stress is required at zero strain? If the compressive stress is removed what is the permanent strain?
A piston-cylinder device, with a free floating piston, contains 2 kg of water as a saturated liquid with a pressure of 400 kPa. The water is then heated to a saturated vapor. What is the amount of b
Half a mole of a monoatomic ideal gas is initially at 1000 K and a pressure of 20 bar. It is expanded adiabatically and reversibly until the final temperature is 400 K. Calculate the final volume
A 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 W. Determine the final temperature of the room after 2 hrs with the electric baseboard heater drawing 120 V and 4.5 A. The ini
Consider nitrogen gas contained in a piston-cylinder arrangement. The cylinder diameter is 150 mm. At the initial state the temperature of the N2 is 500 K, the pressure is 100 kPa, and the height of
Knowing that Es=29x10^6 psi and Ea=10.1x10^6 psi, determine (a) the normal stresses in the steel core and the aluminum shell, (b) the deformation of the assembly.
A 3.084-kg steel projectile is fired from a gun. At a particular point in its trajectory it has a velocity of 300 m/s, an altitude of 700 m, and a temperature of 350 K. The projectile is spinning ab
You borrow $10,000 from a bank at annual rate of 10% compounded monthly, which needs to be repaid in 36 equal monthly payments. What is your monthly payment?
The pressure of the air in the cylinder is 140kPa. Model the air as an ideal gas. Find the final temperature of the air in the cylinder.
A Carnot Engine operates between two reservoirs maintained at 400 degrees celcius(673.15K) and T2, respectively. The heat transfer from the high temperature reservoir is 25kW.
A 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 W. Determine the final temperature of the room after 2 hrs with the electric baseboard heater drawing 120 V and 4.5 A. The in
What is the mass of the aluminum foil? The density of aluminum is 2.71 g/cm^3. The atomic radius of aluminum is .143 nm.
You are holding a book against a vertical wall by pushing upwards with your hand. The angle between your force and the vertical is a (< 90?). The mass of the book is m and the coeficient of stati
Fifty five kJ of heat is transferred to the air during this process. Determine the change in specific internal energy of the air. The pressure is constant during the process.
If solar radiation is incident on the spacecraft at a rate of 1000 W/m2, determine the surface temperature (K) of the spacecraft when the radiation emitted equals the solar energy absorbed.
A hollow shaft with outer and inner diameters respectively equal to 60mm and 25mm rotates at 240 rpm. Determine the power that the shaft can transmit.torque max = 50MPa.