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1. Moist air at 288C, 1 bar, and 50% relative humidity flows through a duct operating at steady state. The air is cooled at essentially constant pressure and exits at 208C. Determine the heat transfer rate, in kJ per kg of dry air flowing, and the relative humidity at the exit.
2. An air conditioner operating at steady state takes in moist air at 288C, 1 bar, and 70% relative humidity. The moist air first passes over a cooling coil in the dehumidifier unit and some water vapor is condensed. The rate of heat transfer between the moist air and the cooling coil is 11 tons. Saturated moist air and condensate streams exit the dehumidifier unit at the same temperature. The moist air then passes through a heating unit, exiting at 248C, 1 bar, and 40% relative humidity. Neglecting kinetic and potential energy effects, determine
(a) the temperature of the moist air exiting the dehumidifier unit, in 8C.
a stream of gas flowing at 15000 scfm contains 20 ppm of toluene. assuming the process operates 8500 hours per year
find the free-fall velocity of an 8.5-in-diameter sphere bowling ball weighing 16 lbfalling through the following
Calculate the force ratio and movement ratio of each jack and the pressure within the hydraulic fluid.
Calculate the normal forces associated with the front and rear wheel pairs of the 1600-kg front- wheel-drive van. Then repeat the calculations when the van
A heat pump cycle is executed with R-134a under the saturation dome between the pressure limits of 1.8 and 0.2 MPa. The maximum coefficient of performance of this heat pump is
a gas mixture consists of o2 and n2. the ratio of the mole numbers of nitrogen to oxygen is 31. this mixture is heated
A particle moves along a spiral described by the equation r=r(inital)+kappa*theta, where r(inital) and kappa are constants, and where theta is in radians. Assume that theta dot =alpha*time, where alpha= 0.15rad/s^2 and t is time expressed in seconds.
the acceleration of a particle is defined by the relation a25-3x2 where a is expressed in ms2 and x in meters. the
consider an air-standard otto cycle and a modified cycle in which the isentropic compression and expansion processes
air is adiabatically compressed in a non flow process from a pressure of 14.7 psia and a temp of 70 deg to 200 psia and
A tensile test was conducted on a mild steel bar. The following data was obtain from the testi. Dia of the steel bar= 3 cmii. Gauge length of the bar = 20cmiii. Load at elastic limit=250kNiiii. Extension at a load of 150 kN= .21mmv. Minimum load =380..
A causal discrete-time LTI system is described by y [ n ) - h [ n - 1) + !Y [ n - 2) = x [ n ) where x[ n ] and y[ n ] are the input and output of the system, respectively.
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