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a living plant leaf is an open system that exchanges energy sunlight and thermal flows matter o2 co2 water vapor etc
a vapor compression refrigeration cycle using r-134a as the working fluid has an evaporator temperature of -20acircdegf
a steam turbine operating at steady state produces 6000 hp with a heat transfer to the surroundings at a rate of 360000
air in a piston-cylinder device is compressed from an initial state temperature 80 degc pressure 100 kpa volume 03
air enters a pipe at 25 celsius 100 kpa at a flow rate of 36 m3hr a heater on the outside of the pipe draws 8 amps at a
r134a flowing at 12 ms enters a 25 mm diameter tube at a quality of 15 at 36 celsius and exits the tube at 10 bars as a
steam at 80 bar 440 celsius enters a turbine operating at steady state at a volumetric flow rate of 180 m3min the water
078 kg of helium fills a piston-cylinder device initial volume of 05 m3 which is maintained at an absolute pressure of
a small ceramic crucible mass of 026 kg has just been washed and rinsed before it can be reused it must be absolutely
air flowing at 23 kgs enters a nozzle operating at steady state at 450 k 300 kpa and a velocity of 2 ms and exits at a
steam flowing at 3 kgs through a nozzle operating at steady state expands from the inlet at 20 bar 2800c to the exit at
r134a flowing at 12 ms enters a 25 mm diameter tube at a quality of 15 at 36 0c and exits the tube at 10 bar as a
air in a piston-cylinder device is compressed from an initial state temperature 80 c pressure 100 kpa volume 03 m3
a tank initially filled with 500 lb liquid water is being filled with water through two inlet pipes one delivers hot
air enters a pipe at 25 0c 100 kpa at a flow rate of 36 m3hr a heater on the outside of the pipe draws 8 amps at a
steam at 80 bar 440 0c enters a turbine operating at steady state at a volumetric flow rate of 180 m3min the water
air is contained in a piston-cylinder assembly initially at 40 lbfin2 and 600 r the air expands in a poly tropic
air exits a turbine at 250 kpa 3000c at a flow rate of 1000 ls determine the mass flow rate in ms modeling the air as
a fourth-order polynomial passes through the five points for which the independent and dependent variables x and y
a tank at 60 degrees c saturated water and mass 2 kg what is the amount of heat required to convert this into saturated
a calculate the fugacity of liquid hydrogen sulphide in contact with its saturated vapor at 255c and 20 barsb the vapor
a 523 ft3 rigid tank contains saturated refrigerant-134a at 100 psia initially 12 percent of the volume is occupied by
you have been asked to select pipe for use within a chemical processing planta what information do you need to know
steam enters a turbine at 40 bar and 400 degree c at a velocity of 200ms and exits at 362 degree c as saturated vapor