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A Rigid, 20-L steam cooker is arranged with a pressure relief valve set to release vapor and maintain the pressure once the pressure inside the cooker reaches 150 kPa. Initially, this cooker is filled with water at 175 kPa with a quality of 10 percent. Heat is now added until the quality is 40 percent. Determine the minimum entropy change of the thermal energy reservoir supplying this heat.
Two rectangular primary sedimentation tanks each 27 m long, 5 m wide and 3.8m deep treat 6000 m3/day wastewater from a community. Total effluent weir length is 50m (both tanks).
At point 1 and point 2, it is also measured that dv1/dt = 20 m/s^2 and dv2/dt = 50 m/s^2 respectively. Determine the local acceleration, the convective acceleration, and the total acceleration at point 1 and 2 at t = 0
A closed tank having a volume of 1.0 ft3 is filled with 0.15 lb of a gas. A pressure gage attached to the tank reads 12 psi when the gas temperature is 80 F. There is some question as to whether the gas in the tank is oxygen or helium.
During a 108 minute long storm, the precipitation rate over a 100 acre area is 1.65 in/hr. The phi index is 0.42 in/hr. The average outflow from the area is 92 cfs during the storm. What is the value of combined detention and interception storages ..
A hole at the bottom of a fish tank releases water at a rate given by the free jet equation. The hole at the bottom has a .5" diameter. If the water level is desired to be at 2' high and be at steady state,
Determine the maximum temperature in the tank. Take the thermal conductivity of the wastes as 2.0 W/mK.
How fast will it be going when it hits the ground?
Air at 14.7 psia, 55*F, 60 percent relative humidity is first heated to 72*F in a heating section and then humidified by introducing water vapor. The air leaves the humidifying section at 75*F and 65 percent relative humidity.
The medium contains a wetting phase in equal proportions. Calculate the numerical value of the Leverett J- function for this idealized porous medium. Assume the wall thickness of the capillary tube to be negligible small.
If the pulleys are fixed to the shaft, determine the magnitude of the tension T and the x,y,z componenet sof reaction at the smooth thrust bearing A and smooth journal bearing B.
The length is 10 feet. What is the nominal strength if Fy=50 ksi. Note that this is a slender-element compression member, and the equations of AISC section E7 must be used
An inductive proximity switch is a device used in valve feedback, describe the construction, operating principle and beneficial features of the switch
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