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Calibrated vibrometer output indicates a velocity amplitude (1/2 peak-to-peak) of 3.8 mm/s. Determine (a) the displacement amplitude in mm and (b) the acceleration amplitude in standard g's.
If the compressor consumes 400 W of power and the COP the refrigerator is 2.2, determine (a) the mass flow rate of the refrigerant and (b) the rate of heat rejected to the kitchen air.
Find the height of stack, in feet, necessary for a driving pressure of 0.1 psia if the outside air is at 50 degree F and the percent change in gas flow if the outside air temperature changes m 60 de
Show that the moment of inertia of a particle of mass m rotating about some point O at a distance R with and angular speed w is Io = mR^2.
It is necessary to maintain a pressure of 180 psi at the snow making machine. Determine the horsepower added to the water by the pump. Neglect minor loses.
What is the pump inlet condition for a Rankine cycle?; the heat added by the boiler (kJ/kg); the cycle efficiency; the efficiency of a Carnot cycle operating between the same temperature limits.
Air at 80F and standard atmospheric pressure flows through a furnace filter with an average velocity of 2.4 ft/s. The pressure drop across the filter is 0.06 in of water.
Estimate the average reaction rate and the reaction zone thickness. Assume the thermal conductivity of the mixture is 0.026 W/mK at 298 K and increases as a function of T1/2.
The value of the uniform wall temperature is equal to that calculated at x = 2 feet. At a location x = 4 feet, determine the heat transfer coefficient, the bulk temperature, and the heat flux.
Calculate the power required to run the refrigerator. Assumptions: r-143a is a saturated vapor at 70 deg F, the compressor operates reversibly and adiabatically.
Determine the values of the friction factor corresponding to Reynolds numbers of 5000, 12000, 20000. Does the frinction factor increase or decrease as the Reynolds number increases?
Determine the reduction in the exit temperature of the compressed air and the compressor power saved. Assume water vaporizes completely before leaving the compressor.
The refrigerant leaves the condenser at 0.7 MPa, 26 °C. Determine the rate at which heat energy is removed from the refrigerated space, in kW,
At the compressor inlet, saturated vapor enters at -10 °C, and saturated liquid leaves the condenser at 30 °C. The mass flow rate of refrigerant is 0.08 kg/s. Determine the rate of heat reje
The fuel mass flow rate is 60 kg/min. Assume that the plant operates adiabatically. Calculate the power generated by the plant at steady state in MW.
Determine the total rate of exergy destruction that would result from the implementation of this recommendation.
Determine the maximum theoretical power that could be developed by any one-inlet one-exit control volume at steady state, that would reduce the steam to the dead state.
What is the flow rate of water when the gauges show a pressure difference between the top section and the bottom one to be 31 kN/m2.
For this maximum flowrate, determine the values of static temperature, static pressure, stagnation temperature, stagnation pressure, and velocity at the inlet and the exit of the constant area duct.
Design 2-shell pass and 8-tube pass heat exchanger for heating ethyl alcohol from 25°C to 70°C at a rate of 2.9 kg/s. Water is available at 95°C can cool down to 45°C.
The gas undergoes complete combustion with 120% of the stoichimetrically required air. A) Write the balanced equation B) Calculate the fuel-air ratio on a molar and mass basis.
Determine the anchoring force required to hold the nozzle in place, including the horizontal (Fx) and vertical (Fy) components.
Find the equation for max stress and strain in the beam at the maximum deformation point in terms of applies load and measured displacement.
The first-law thermal efficiency of the power plant is 0.30. Determine the thermal net power (MW) produced by the power plant.
Design of a chamber that will be used to study cell culture under a flow field: Determine the channel height that can be used to determine the wall shear stresses as high as 20 dyne/cm2.