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Refrigerant 134a enters a compressor at 200kPa, 100% quality and exits at 1MPa, 60 degrees centigrade. The speed of the R-134a at the inlet is 40m/s, the speed at the exit is 10m/s and the mass flow rate of the R-134a through the compressor is 0.08kg/s. The heat transfer from the compressor to the surroundings is 0.63 kW. Include the change in the kinetic energy of the R-134a and compute the power input needed to operate the compressor.
the centerboard of a sailboat is 2.5m long and has a chord of 1m. approximate the centerboard as a flat plate in water
an unpolarized light beam traveling along the x-axis is sent into a system of three polarizers. the polarization axis
a 1.50-h inductor is connected in series with a 200nbspomega resistor through a 15.0-v dc power supply and a switch. if
the thin-walled pipe has an inner diameter of 0.5 cm and a thickness of 0.025 cm. if it is subjected to an internal
a statewide real estate agency farm associates specializes in selling farm property in the state of nebraska. its
superheated steam at 8 mpa and 480oc leaves the steam generator of a vapor power plant. heat transfer and frictional
a circular steel bar is axially loaded. it has a diameter of 2 in. a modulus of elasticity of 29x103ksi and a shear
nitrogen gas enters a diffuser at 100 kpa and 110 degrees c with a velocity of 205 ms and leaves at a 110 kpa and 45
provide an example of a situation where you could utilize correlation analysis calculating the coefficient of
a piston cylinder device initially contains 0.6 kg of steam with a volume of 0.1 m3. the mass of the piston is such
for the vapor power cycle steam enters the at 3 mpa and 500 c and leaves at 70 kpa and 200 c. the system is operating
to conserve water and energy a flow reducer is installed in the shower head shown here. if the pressure at point 1
a 20 cm diameter sphere is made of a heat-generating material that produces 106 wm3. the sphere is cooled by 20oc air
an ideal gas flows through a device at steady state. the temperature of the gas at the inlet is 20c and its velocity
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
an 800 ft ship has a displacement of 37600 tons and the area defined by the waterline is 38000 ft2. a will the ship
Determine the thermal efficiency of the cycle and the net specific work. Assume each turbine stage isentropic efficiency to be 99% and assume the FWH is open.
water vapor at 3.0 mpa and 300c state 1 is cooled to 200cstate 2 then is isothermically compressed to 2.5mpa state 31.
a rocket motor is used to accelerate a kinetic energy weapon to a speed of 3500 mph in horizontal flight. the exit
calculate: a) the overall train value. b) the output rational speed at shaft 5. c) the output torque at shaft 5. Relevant gear data is= NA= 17, NB= 36, NC= 19, ND= 41, worm E = double lead, worm G = triple lead, NH= 37?
a projectile is fired at an angle of 62deg from the horizontal with a velocity of 704 ftsec. if it lands 4.75 seconds
you are an industrial hygienist for a large distributor of industrial compressed gases who was evacuated to baton rouge
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