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The cycle has a thermal efficiency of 35%, and steam changes from saturated vapor at 300 C during the heat addition process. If the mass flow rate of the steam is 2kg/s, determine the net power (kw)
A ssume that one half of the energy incident on the collector goes to this reservoir, which, in turn, serves as a source for a heat engine. If the temperature of the atmosphere is 70 F,
Estimate the power in watts that can be produced by the turbine. Hint: In a time interval Dt,the amount of mass that flows through the rotor is Dm=mDt ,and the corresponding amount of kinetic energy
what is the second year book value for equipment with an initial cost of $11,000, a salvage value of 1,000 and a recovery period of 5 yrs for A. straight line depreciation. B. Double declining balan
$25,000 is deposited in a savings account that pays 10% interest, compounded monthly. Equal annual withdrawls are to be made from the account, beginning one year from now and countinuing forever.
The company makes no deposits during the subsequent 10 years. If the bank pays 10% interest, what is the amount in the account at the end of 20 years
Determine the centroid for the region bounded by the x-axis, the curve y=x^3, and the line x=3
How many days would they need to use the equipment each year to justify purchasing the equipment? To purchase equipmet/ Buy at $60,000, Operation and maintanence is $120/day, life is 5 yrs and salva
a store charges 1.25 % interest per month in credit purchases. This is equivalent to: what nominal annual interest rate, effective annual interest rate, and effective monthly interest rate
differential leveling between benchmarks A,B,C,D, and A gives elevation differences(m) of -15.632, 32.458, 38.214, and -55.025, and distances(km) of 4,6,5, and 3 respectively.
Dust is removed from the airstream of a municipal incinerator by four dust collectors operating in parallel, each handling 1/4 of the total airflow of 200 m3/min. The airstream contains 10 g/m3 of s
For almost all new coal plants, Clean Air Act emission standards limit emissions of sulfur dioxide (SO2) to 260 grams per million kJ of heat input (fuel value). They also restrict particulate emissi
the cost and revenue associated with producing a sustainable component are fixed costs = $112,500. Variable costs = $30 / unit. Revenue = $45 / unit. How many units must the company sell each year t
determine the elastic elongation that would be expected for a 16-mm-diameter rod of the same material if the rod were 1.6 m long and subjected to a tension force of 3.3 kN.
At the proportional limit, a 32-mm-thick by 87-mm-wide bar elongates 10.2 mm under an axial load of 532 kN. The bar is 2.4 m long. Poisson%u2019s ratio, , for the material is 0.27.
An engineering student, recognizing that the "ideal gas law" requires gas velocity to be function of temperature, suggests that an easy way to increase efficiency would be to change the temperature
The current removal efficiency is 96% for an air flow rate through the separator equal to 18 m3/s. Due to a process change, the air flow rate is expected to increase to 22 m3/s.
A rectangular concrete beam of width b = 24 inches is limited by architectual considerations to a maximum total depth of h = 16 inches. it must carry a total factored load moment of Mu = 400 ft-kips
A company borrowes $25000 at an interest rate of a nominal 16% per year compounded quarterly. The company desires to repay the loan in 36 equal quartely payments, with the first payment starting thr
The effluent contains 20 mg/L of solids and 20 mg/L of BOD the biological treatment process produced .32 kg of bacterial solids per kg of BOD removed
An activated sludge process receives 4000m^3 / day containing 120 mg BOD /L from the primary settling tank and 3500 m^3/day Containing 25mg BOD/L from the secondary settling tank.
If a student mixes 500 ml of a solution containing 50 mg/l of CaCl2 with 500 ml of containing 50 mg/l of NaHco3 what will be the hardness and alkalinity of the mixture of mg/l as CaCo3
Flue gas containing NO2is then treated by an air pollution control equipment with 85% efficiency. Determine the annual emission rate of NO2 leaving the air pollution control device.
On a clear summer afternoon with a wind speed of 3.20 m/s measured at 100 m elevation, the TSP (total suspended solids) concentration was found to be 1520 ug / m3 at a point 2 km downwind