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One lbm of butane (C4H10) is burned with 25 lbm of air that is at 90°F and 14.7 psia. Assuming that the combustion is complete and the pressure of the products
One means of improving the performance of a refrigeration system that operates over a wide temperature range is to use a two-stage compressor
One kilogram of ammonia (NH3) is contained in a spring-loaded piston/cylinder as saturated liquid at -20°C. Heat is added from a reservoir at 100°C
One kilogram of butane (C4H10) is burned with 25 kg of air that is at 30°C and 90 kPa. Assuming that the combustion is complete and the pressure of the products
Assuming constant specific heats for both the air and water at room temperature, determine (a) The final equilibrium temperature in the room
One ton (1000 kg) of liquid water at 80°C is brought into a well-insulated and well-sealed 4-m = 5-m = 6-m room initially at 22°C and 100 kPa
One technique for operating a steam turbine in part-load power output is to throttle the steam to a lower pressure before it enters the turbine.
One means of air-conditioning hot summer air is by evaporative cooling, which is a process similar to the SSSF adiabatic saturation process.
Nitrogen gas enters a diffuser at 100 kPa and 150°C with a velocity of 180 m/s, and leaves at 110 kPa and 25 m/s.
Octane (C8H18) is burned with 250 percent theoretical air, which enters the combustion chamber at 25°C.
One-fourth kg of a gas contained within a piston-cylinder assembly undergoes a constant pressure process at 5 bar beginning at ?1=0.20m3/kg.
On a hot summer day, a student turns his fan on when he leaves his room in the morning. When he returns in the evening, will the room be warmer or cooler
One kg water at 500oC and 1 kg saturated water vapor both at 200 kPa are mixed in a constant pressure and adiabatic process
On the psychrometric chart, a cooling and dehumidification process appears as a line that is
On a hot summer day, the air in a well-sealed room is circulated by a 0.50-hp fan driven by a 65 percent efficient motor
Methane at 25°C, 100 kPa, is burned with 200% theoretical oxygen at 400 K, 100 kPa, in an adiabatic SSSF process, and the products of combustion exit
Methane is compressed adiabatically by a steady-flow compressor from 2 MPa and -10°C to 10 MPa and 110°C at a rate of 0.55 kg/s
Explain Dalton's law of partial pressure. Does water vapor conform to Dalton's law? What are some other sources of pressure hazards?
The nitrogen leaves the heat exchanger at 100 kPa with a velocity of 180 m/s. Determine the stagnation pressure and temperature of the nitrogen at the inlet
Long cylindrical steel rods (r = 7833 kg/m3 and cp = 0.465 kJ/kg -c °C) of 10-cm diameter are heat-treated by drawing them at a velocity of 3 m/min
Nitrogen enters a steady-flow heat exchanger at 150 kPa, 10°C, and 100 m/s, and it receives heat in the amount of 120 kJ/kg as it flows through it
Long aluminum wires of diameter 3 mm (r = 2702 kg/m3 and cp = 0.896 kJ/kg-c °C) are extruded at a temperature of 350°C and are cooled to 50°C
Liquid water at 15°C is heated in a chamber by mixing it with saturated steam. Liquid water enters the chamber at the steam pressure at a rate of 4.6 kg/s
Liquid octane (C8H18) at 77°F is burned completely during a steady-flow combustion process with 180 percent theoretical air that enters the combustion chamber
Liquid water enters an adiabatic piping system at 15°C at a rate of 5 kg/s. It is observed that the water temperature rises by 0.5°C in the pipe due to friction