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The condenser operates at 10 kPa. Determine:(a) the mass flow rate through the boiler needed for this system to produce a net 5000 kW of power
If the inlet axial Mach number is .52, calculate the mean flow coefficient and sketch the velocity triangles for one stage. Show that the blade height at exit from the compressor is about 7.8mm.
If the resistive force is 10 dx/dt, determine the displacement of the mass if it is released with no initial velocity from a position of 6 in above the equilibrium position.
Determine (a) the final temperature of the steam in the tank, in degrees C, (b) the final mass of the steam in the tank, in kg, and (c) the amount of entropy produced, in kJ/K.
Let the weight be pulled down 3 in. Below the equilibrium level nd then released. Find the equation of the motion if there is an outside force F(t)= 8sin16t acting upon the spring.
Air initially at a dry-bulb temperature of 45oC and relative humidity of 10% is adiabatically humidified to 60% relative humidity. Determine the adiabatic saturation temperature from the psychrometri
Steam enters at 300C and exits as liquid water at 90C, while methanol enters at 5,500 STP L/min at 65C at and leaves at 260C. What is the flow rate of steam in m3/min?
Consider 2.5% of austenite containing 0.65 wt% C and cooled to below 727 degrees C. How many kilograms each of pearlite and the proeutectoid phase form?
The total horizontal force exerted by the planes engine is 189 kn and the plane is accerlerating at 15 m/s^2. How much power is being developed by the negines in MW?
If the turbine dissipates heat to its surroundings at the rate of 50 kW (a) Calculate its power output in kW; (b) What is the water's temperature at the exit of the turbine in C. State your assumpti
The same rod is now subjected to a torque of 8 kip-ft. What diameter must the rod be to have a factor of safety against yielding of 1.75?
A piston-cylinder device contains 5 kg of saturated water vapor at 3 MPa. The surrounding temperature is at 20°C. What is the entropy generation for this process?
The waste heat from this engine is rejected to a nearby lake at 60°F at a rate of 800 Btu/min. Determine the power output of the engine. (23 hp). Determine the temperature of the source. (1156
Calculate thermistor temperature sensitivity for a thermistor at 100oC. Thermistor Resistance at 100oC is 100 ohms. Take Beta = 4120 k @ 100oC.
The exit temperature of hot air is 20°C. (Assuming constant specific heats.) What is the exit temperature of the cold water?
Heat transfer coefficient between gas and each wire is 200 w/m2-k. Estimate the conduction error in the measurement of gas temperature. The wire is 5 cm long and 1.5 mm in diameter.
Determine the surface temperature of the top of the puck after an 83 MPH (37 m/s) slapshot from center ice by Paval Datsyuk. The ice temperature is -4°C.
Compare air and helium as cooling media for electronic devices. Both fluids must exit through an area of 0.025 m^2. The exit temp is limited to 60 c the inlet temp can be as low as 10 c and as high
If the volume of the air in the tank is 2 cubic meters, find the increase in entropy of the air during the process. Assume that the specific heat of the air is constant.
Determine the amount of heat transferred (kJ) during the process. Treat the Hydrogen as an ideal gas and use constant specific heats at the average temperature.
The air is then reheated until a final state of 80 oF and 40% relative humidity is reached. Determine: The mass flow rate of the condensate leaving the unit.
The coefficient of performance of the air-conditioning unit is 2.92. Determine: the input power to the vapor-compression refrigeration system per unit mass of dry air.
Combustion products (2% water vapor and 98% dry air by mass) flow in a chimney at 34oC and 1 atm. Determine: a. The dew point temperature b. The humidity ratio c. The relative humidity.
Determine the relative humidity and the humidity ratio of the air. Determine the mixture volume (ft3) containing 1 lbm of dry air.