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Air flows through a refrigeration cycle consisting of three processes: Process 1-2 is an isothermal expansion from a pressure of 6.25 bar; Process 2-3 is an adiabatic compression to a temperature of 550 K and a pressure of 6.25 bar; Process 3-1 is a constant pressure cooling. (a) Determine the temperature at state 1. (b) Determine the coefficient of performance of the cycle. Hint: Process 1-2 is the heat input from the cold state process for the cycle.
a 40-mph wind below past your house speeds up as it flows up and over the roof.nbspif the elevation effects are
a rigid tank contains 20 lbm of air at 50 psia and 80o f. the air is now heated until its pressure doubles. determine
air at 1175k 8 bar enters a turbine operating as steady state and expands adiabatically to an exit state of 1 bar. the
(a) Draw and label a schematic of the system. (b) Determine the mass flow rate (kg/s) of water vapor neededand (c) the rate of exergy destruction (kW)
a homeowner has devised a humidifier that is shown below. water is taken from the faucet and fed to a reservoir that
a stream of gaseous propane is burned with air in an adiabatic and zero-work steady flow process. the reactants enter
An adiabatic gas turbine expands air at 1000 kPa and 500?C to 100 kPa and 150?C. Air enters the turbine through a 0.2-m2 opening with an average velocity of 40 m/s, and exhausts through a 1.09-m2 opening.
a projectile is launched with a speed v0 27.0 ms from the floor of a 4.3-m-high tunnel as shown. determine the maximum
two shafts whose axes are 8.5 in. apart are to be coupled together by standard spur gears with an angular velocity
consider condenser in a vapor power plant in which steam from the turbine is condensed to saturated liquid by rejecting
a 2-2-2 kinematic coupling uses 19-mm silicon nitride balls and tungsten carbide vees. determine the hertz contact
Suppose an object moves on a horizontal line. If the object starts from rest at the origin and it has an acceleration of 16t-t, Determine the total distance the object has moved when time is 2 seconds. Note the distance moved is not the position. For..
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