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Moist air enters a dehumidifier at 808F, 1 atm, and f 5 60% and exits at 588F, 1 atm, and f 5 90% with a volumetric flow rate of 10,000 ft3/min. The stream then mixes adiabatically with a moist air stream at 958F, 1 atm, and f 5 47% having a volumetric flow rate of 2000 ft3/min. A single moist-air stream exits the mixing chamber. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine at steady state
(a) the rate water is removed from the moist air passing through the dehumidifier, in lb/h.
(b) the temperature, in 8F, and the relative humidity of the moist air at the mixing chamber exit.
A mercury manometer (r = 13,600 kg/m3) is connected to an air duct to measure the pressure inside. The difference in the manometer levels is 15 mm, and the atmospheric pressure is 100 kPa.
knowing that at the instant shown assembly a has a velocity of 9in.s and an acceleration of 15 in.s2 both directed
the figure below shows the geometrical stress concentration factor k for a flat bar loaded in uniaxial tension. the
A square 3m x 3m gate is located in the 45* sloping side of a dam. Some measurements indicate that the resultant force of the water on the gate is 500kN.(a)Determine the preassure at the bottom of the gate.(b)Show on a sketch where this force acts..
hot air at a temperature of 60c is flowing through a steel pipe of 10 cm diameter. the pipe is covered with two layers
a for a rectangular coordinate system we developed the navier stokes equation for vx. now reduce that equation to
The stators in a gas turbine are designed to increase the kinetic energy of the gas passing through them adiabatically. Air enters a set of these nossels at 270 psia and 795 F with a velocity of 97 ft/s and exists at 200 psia and 550 F. Calculate the..
If the beam has square cross section of 9 in., on each side, determine the absolute maximum bending stress in the beam.
A 24.8-kg aluminium block initially at 209ºC is brought into contact with a 17-kg block of iron at 101ºC in an insulated enclosure. Determine the final equilibrium temperature and the total entropy change for this process.
Consider the following one-commodity Samuelson model. e = (1, 1), u(x0 , x1) = min(3x0 + x1, 2x0 + 5x1). (a) Show the set of feasible stationary allocations in a diagram. Show indifference curves in the diagram.
a gasoline engine delivers 150 kw . the fuel used in c8h18 liq and it enters the engine at 25 c . 150 of theoretical
to save energy stack gas from a furnace is used to dry rice. a gas containing 4.73 mol water is fed into the dryer as
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