Calculate the steam mass flow rate in lbm/min; also calculate
the exit pipe diameter if the velocity is to be maintained at
7ft/s.
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Calculate the steam mass flow rate in lbm/min; also calculate
the exit pipe diameter if the...
Five gallons per minute of hot water at 180F and 20 psig is produced in a...
Five gallons per minute of hot water at 180F and 20 psig is produced in a flow system by injection and condensation of low-pressure steam at 20 psig and 80% quality into cold water at 60F. The calculation basis is one minute. Calculate the steam mass flow rate in lbm/min; also calculate the exit pipe diameter if the velocity is to be maintained at 7ft/s.
A steam pipe is to transport 215 lbm/s of steam at 200 psia and 600°F. Calculate...
A steam pipe is to transport 215 lbm/s of steam at 200 psia and 600°F. Calculate the minimum diameter this pipe can have so that the steam velocity does not exceed 59 ft/s. The specific volume of steam at the given pressure and temperature is 3.0586 ft/bm. The minimum diameter of the pipe is ft.
A ship's steam turbine receives 7200 lbm/min of steam at pressure of 900psia and a velocity...
A ship's steam turbine receives 7200 lbm/min of steam at pressure of 900psia and a velocity of 100ft/s. The steam leaves the turbine at 450 psia with a velocity of 800 ft/s. Specific enthalpy at the inlet and exit, respectively, are 1508.9 Btu/lbm and 1238.5 Btu/lbm. As the steam passes through turbine 12 Btu/lbm of heat is lost to the environment. a) Using the Steady Flow Energy Equation, determine the specific work generated by this turbine. (Btu/lbm) b) Determine the...
Water flows through a 30° pipe bend at a rate of 200 gpm. The diameter of...
Water flows through a 30° pipe bend at a rate of 200 gpm. The diameter of the entrance to the bend is 2.5 in. and that of the exit is 3 in. The pressure in the pipe is 30 psig, and the pressure drop in the bend is negligible. What is the total force (magnitude and direction) exerted by the fluid on the pipe bend?
4. A reducing elbow is used to deflect water flow at a rate of 30 lbm/s...
4. A reducing elbow is used to deflect water flow at a rate of 30 lbm/s in a horizontal pipe upward by an angle 30° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of the elbow is 4 inch at the inlet and 2 inch at the exit. The elevation difference between the centers of the exit and inlet is 40 inch. The mass of the elbow and the water in it...
A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/...
A) Steam enters a horizontal pipe operating at steady state with a specific enthalpy of 2,663 kJ/kg and a mass flow rate of 0.1 kg/s. At the exit, the specific enthalpy is 1,531 kJ/kg. If there is no significant change in kinetic energy from inlet to exit, determine the rate of heat transfer between the pipe and its surroundings, in kW. B) Refrigerant 134a enters a horizontal pipe operating at steady state at 40°C, 3.1 bar and a velocity of...
steam enters a turbine at 1000 psia and 1000 degrees celsius, and leaves at 5Psia and...
steam enters a turbine at 1000 psia and 1000 degrees celsius,
and leaves at 5Psia and 97% quality, the turbine is adiabatic and
the power output is 25000 hp.
Calculate:
1- the work of the turbine ( in btv/lbm)
2- the mass flow rate in lbm/s, if the work of the turbine is
353.399 btv/lbm
3- the inlet diameter, if the mass flow rate is 60 lbm/s
NOTE: inlet velocity ≈ exit velocity =80 ft/s
1hp=2545 btv/hr
- Steam turbine...
12. Water flows in a 5-cm-diameter pipe at a velocity of 0.75 m/s. The mass flow...
12. Water flows in a 5-cm-diameter pipe at a velocity of 0.75 m/s. The mass flow rate of water in the pipe is a. 353 kg/min b. 75 kg/min c. 37.5 kg/min d. 1.47 kg/min e. 88.4 kg/min 13. Consider incompressible, frictionless flow of water in a vertical piping. The pressure is 240 kPa at 2 m from the ground level. The velocity of water does not change during this flow. The pressure at 15 m from the ground level...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe with a maximum velocity (turbulent profile) of 0.3 meters/sec. The pipe then goes through an expansion, to where it is then flowing in a 0.5 meter-diameter pipe, and the flow regime has changed from turbulent to laminar. In the second section of pipe, calculate the velocity as (a) block flow profile (Vavg), and (b) maximum velocity in laminar flow profile? HINT: you will need...
A steam pipe is to transport 215 lbm/s of steam at 200 psia and 600°F. Calculate the minimum diameter this pipe can have so that the steam velocity does not exceed 59 ft/s. The specific volume of steam at the given pressure and temperature is 3.0586 ft/bm. The minimum diameter of the pipe is ft.
Water flows through a 30° pipe bend at a rate of 200 gpm. The diameter of the entrance to the bend is 2.5 in. and that of the exit is 3 in. The pressure in the pipe is 30 psig, and the pressure drop in the bend is negligible. What is the total force (magnitude and direction) exerted by the fluid on the pipe bend?
4. A reducing elbow is used to deflect water flow at a rate of 30 lbm/s in a horizontal pipe upward by an angle 30° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of the elbow is 4 inch at the inlet and 2 inch at the exit. The elevation difference between the centers of the exit and inlet is 40 inch. The mass of the elbow and the water in it...
steam enters a turbine at 1000 psia and 1000 degrees celsius,
and leaves at 5Psia and 97% quality, the turbine is adiabatic and
the power output is 25000 hp.
Calculate:
1- the work of the turbine ( in btv/lbm)
2- the mass flow rate in lbm/s, if the work of the turbine is
353.399 btv/lbm
3- the inlet diameter, if the mass flow rate is 60 lbm/s
NOTE: inlet velocity ≈ exit velocity =80 ft/s
1hp=2545 btv/hr
- Steam turbine...
12. Water flows in a 5-cm-diameter pipe at a velocity of 0.75 m/s. The mass flow rate of water in the pipe is a. 353 kg/min b. 75 kg/min c. 37.5 kg/min d. 1.47 kg/min e. 88.4 kg/min 13. Consider incompressible, frictionless flow of water in a vertical piping. The pressure is 240 kPa at 2 m from the ground level. The velocity of water does not change during this flow. The pressure at 15 m from the ground level...
a. Calculate the dry air and water vapor mass flow rates (lb/min) if the volume flow rate is 1,000 cfm, the humidity ratio is 0.025 lbv/lba, and the dry air density is 0.072 Iba/ft3. b. Assume the above air enters an evaporator coil at 90°F where it is cooled in a constant humidity ratio process until reaching the 100 % RH curve ( the temperature at that point is the dew point. The air then keeps dropping in temperature, following...
L 2. Steady statemass balance: Water is flowing at steady state in a 0.1 meter-diameter pipe with a maximum velocity (turbulent profile) of 0.3 meters/sec. The pipe then goes through an expansion, to where it is then flowing in a 0.5 meter-diameter pipe, and the flow regime has changed from turbulent to laminar. In the second section of pipe, calculate the velocity as (a) block flow profile (Vavg), and (b) maximum velocity in laminar flow profile? HINT: you will need...
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