Homework Answers
THE PIPE IS INSULATED AND THE EXPANSION OF THE STEAM CAN BE ASSUMED TO BE ISENTROPIC.
FROM SATURATED WATER TABLES CORRESPONDING TO 300kPa the saturation temperature is 133.5 degree Celsius
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4. Steam enters a small insulated pipe as saturated water vapor at 400kPa. The pressure of...
THERMO: QUESTION 5 Saturated water vapor at 12.92 bar enters an insulated throttling valve which drops...
THERMO: QUESTION 5 Saturated water vapor at 12.92 bar enters an insulated throttling valve which drops the pressure to 1.50 bar. Determine the temperature (oC) of the steam at the exit of the valve. Note: Give your answer to two decimal places. QUESTION 6 Air enters an adiabatic diffuser at 320 K and 100 kPa with a velocity of 665.4 m/s. At the diffuser exit, the temperature is 520 K. Determine the velocity (m/s) at the exit of the diffuser....
Steam enters a well-insulated nozzle at 10 bar and 200ºC. It exits as saturated vapor at...
Steam enters a well-insulated nozzle at 10 bar and 200ºC. It exits as saturated vapor at 100 kPa. The mass flow rate is 1 kg/s. What is the steady-state exit velocity? What is the outlet cross-sectional area?
A stream containing ethane gas (C2He) enters the inner pipe of a double-pipe heat exchanger at 40°C and 105 kPa and exits from the pipe at 240*C and the same pressure. Superheated steam at 315 C...
A stream containing ethane gas (C2He) enters the inner pipe of a double-pipe heat exchanger at 40°C and 105 kPa and exits from the pipe at 240*C and the same pressure. Superheated steam at 315 C and 5.0 bars enters the outer (annular) pipe, flowing counter-currently to the ethane, and exits as a saturated vapor at the same pressure. Neglecting the heat losses from the heat exchanger to its surroundings. Draw a diagram of the process. (5) What are the...
Question 1 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a...
Question 1 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in2. At the exit, the pressure is 400 lb/in and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F
Steam enters a horizontal 14-cm-diameter pipe as a saturated vapor at 5 bar with a velocity...
Steam enters a horizontal 14-cm-diameter pipe as a saturated vapor at 5 bar with a velocity of 10 m/s and exits at 4.5 bar with a quality of 95%. Heat transfer from the pipe to the surroundings at 291K takes place at an average outer surface temperature of 400 K. For operation at steady state, determine (a) the velocity at the exit, in m/s. (b) the rate of heat transfer from the pipe, in kW.? (c) the rate of entropy...
(1 point) A rigid, insulated 0.43 m tank initially contains saturated water liquid at 362 kPa....
(1 point) A rigid, insulated 0.43 m tank initially contains saturated water liquid at 362 kPa. The tank is connected to a steam pipe line carrying steam at 1.53 MPa and 305 °C through a valve. When the valve is opened, steam enters the tank from the pipe. When the valve is closed, the tank is filled with a saturated vapor with a pressure of 0.8 MPa. How much mass was added to the tank during this process?
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...
Problem 1: (10 pts) Steam enters an insulated turbine operating at steady state at a pressure...
Problem 1: (10 pts) Steam enters an insulated turbine operating at steady state at a pressure of 2 MPa and a temperature of 400°C. A liquid-vapor water mixture exits the turbine with a quality of 0.9 and a pressure of 15 kPa. The power output of the turbine is 5 MW. (1) Identify the keywords and state their meaning (2 pts) (2) Determine the mass flow rate of steam required (8 pts)
4. Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the...
4. Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the boiler at 16 MPa, and saturated vapor enters the turbine. The condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 120 kg/s. Determine (a) the thermal efficiency. (b) the back work ratio. (c) the net power developed, in kW. (d) the rate of heat transfer from the working fluid passing through the condenser, in kW.
Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points)...
Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points) Steam is the working fluid in an ideal Rankine cycle. ated vapor enters the turbine at BO MPa and saturated liquid exits the ser at a pressure of 0.006 MPa. The not power output of the cycle is 500 MW.Also he = 1812.2 kJ/kg and he 157.56 kJ/kg a. Thermal Efficiency (30 points) b. Mass flow rate in kg/h (20 points) c. Bonus: Qin...
A stream containing ethane gas (C2He) enters the inner pipe of a double-pipe heat exchanger at 40°C and 105 kPa and exits from the pipe at 240*C and the same pressure. Superheated steam at 315 C and 5.0 bars enters the outer (annular) pipe, flowing counter-currently to the ethane, and exits as a saturated vapor at the same pressure. Neglecting the heat losses from the heat exchanger to its surroundings. Draw a diagram of the process. (5) What are the...
Question 1 Refrigerant 134a enters an insulated diffuser as a saturated vapor at 80°F with a velocity of 1400 ft/s. The inlet area is 1.4 in2. At the exit, the pressure is 400 lb/in and the velocity is negligible. The diffuser operates at steady state and potential energy effects can be neglected. Determine the mass flow rate, in Ib/s, and the exit temperature, in °F
(1 point) A rigid, insulated 0.43 m tank initially contains saturated water liquid at 362 kPa. The tank is connected to a steam pipe line carrying steam at 1.53 MPa and 305 °C through a valve. When the valve is opened, steam enters the tank from the pipe. When the valve is closed, the tank is filled with a saturated vapor with a pressure of 0.8 MPa. How much mass was added to the tank during this process?
Problem 1: (10 pts) Steam enters an insulated turbine operating at steady state at a pressure of 2 MPa and a temperature of 400°C. A liquid-vapor water mixture exits the turbine with a quality of 0.9 and a pressure of 15 kPa. The power output of the turbine is 5 MW. (1) Identify the keywords and state their meaning (2 pts) (2) Determine the mass flow rate of steam required (8 pts)
4. Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the boiler at 16 MPa, and saturated vapor enters the turbine. The condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 120 kg/s. Determine (a) the thermal efficiency. (b) the back work ratio. (c) the net power developed, in kW. (d) the rate of heat transfer from the working fluid passing through the condenser, in kW.
Problem 2: (50 points) Steam is the work Saturated vapor enters the turbine at (50 points) Steam is the working fluid in an ideal Rankine cycle. ated vapor enters the turbine at BO MPa and saturated liquid exits the ser at a pressure of 0.006 MPa. The not power output of the cycle is 500 MW.Also he = 1812.2 kJ/kg and he 157.56 kJ/kg a. Thermal Efficiency (30 points) b. Mass flow rate in kg/h (20 points) c. Bonus: Qin...
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