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100 KW of energy from a stream of superheated steam@ 200kg/sec, 10 bar...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchang...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at the same pressure at 40 C and 250 kPa and exits at Taking flow chart. Include both mass and volumes on your inlet and outlet streams. b. Calculate the specific enthalpy values for the inlet and outlet streams. c. Use an energy balance to calculate the required mass...
MATERIAL AND ENERGY BALANCE
a) Superheated steam at 300°C and 5.0 bar absolute is used to heat a counter-currently flowing stream of propylene gas in an adiabatic heat exchanger. The propylene gas enters the heat exchanger at 40°C and 250 kPa and leaves at 250°C. All of the steam condenses and emerge from the heat exchanger as a saturated liquid at the same pressure. i) Taking a basis of 100 mol/s of the feed gas, draw a...
Saturated steam at a pressure of 2 bar is to be used to heat a stream...
Saturated steam at a pressure of 2 bar is to be used to heat a stream of ethane. The ethane enters a heat exchanger at 16ºC and 1.5 bar at a rate of 795 m3 /min and is heated at constant pressure to 93ºC. The steam condenses and leaves the exchanger as a liquid at 27ºC. The specific enthalpy of ethane at the given pressure is 941 kJ/(kg.oC) at 16ºC and 1073 kJ/(kg.oC) at 93ºC a) Draw a flow diagram...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in stream 1 enters the turbine at 600 °C, 50 bar with mass flow rate kg/s and exits at 7 bar, 350 °C. Stream 3, which is saturated liquid and is throttled to 2 bar (stream 4). Stream 5 is at 200°C, 2 bar, and is mixed adiabatically with stream 4 in the tank. Stream 6 is wet steam that contains 8% liquid. This stream...
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...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
Q4/ Toluene gas (CH3) enters a continuous adiabatic heat exchanger at (35°C) and (300 KPa) and...
Q4/ Toluene gas (CH3) enters a continuous adiabatic heat exchanger at (35°C) and (300 KPa) and exits at (260°C). Superheated steam at (400°C) and (5 bar) enters to exchanger flowing counter currently to a Toluene and exits as a saturated liquid at the same pressure. 1- If (150 mol) of Toluene is fed, draw and label a process flow chart. 2- Calculate the values of inlet-outlet enthalpies. 3- Calculate the volumetric feed ratio of the two streams (m' steam fed/mºtoluene...
Consider a Rankine cycle operating between 1.013 bar and 100 bar with a maximum superheated steam...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
Propane gas enters a continuous adiabatic heat exchanger 240°C. Superheated steam at 300 C and 5 bar enters the exchanger flowing countercurrently to the propane and exits as a saturated liquid at the same pressure at 40 C and 250 kPa and exits at Taking flow chart. Include both mass and volumes on your inlet and outlet streams. b. Calculate the specific enthalpy values for the inlet and outlet streams. c. Use an energy balance to calculate the required mass...
Problem 3 (50%) The process below is part of a larger steam power plant. Steam in stream 1 enters the turbine at 600 °C, 50 bar with mass flow rate kg/s and exits at 7 bar, 350 °C. Stream 3, which is saturated liquid and is throttled to 2 bar (stream 4). Stream 5 is at 200°C, 2 bar, and is mixed adiabatically with stream 4 in the tank. Stream 6 is wet steam that contains 8% liquid. This stream...
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...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
1. (20 points) Consider a cogeneration system operating at steady state. Superheated steam enters the first turbine stage at 6 MPa, 540 °C. Between the first and second stages, 45% of the steam is extracted at 500 kPa and diverted to a process heating load of 5 x 108 kl/h. Condensate exits the process heat exchanger at 450 kPa with specific enthalpy of 589.13 kl/kg and is mixed with liquid exiting the lower pressure pump at 450 kPa. The entire...
Homework 2 Problem 1: A piston-cylinder device initially contains 0.35-kg steam at 3.5 MPa, superheated by 7.4 C. Now the stream loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. The cooling continues until the cylinder contains water at 200C. Determine (a) the final pressure and the quality (if mixture), (b) the boundary work, (c) the amount of heat transfer when the piston first hits...
Q4/ Toluene gas (CH3) enters a continuous adiabatic heat exchanger at (35°C) and (300 KPa) and exits at (260°C). Superheated steam at (400°C) and (5 bar) enters to exchanger flowing counter currently to a Toluene and exits as a saturated liquid at the same pressure. 1- If (150 mol) of Toluene is fed, draw and label a process flow chart. 2- Calculate the values of inlet-outlet enthalpies. 3- Calculate the volumetric feed ratio of the two streams (m' steam fed/mºtoluene...
Consider a Rankine cycle operating between 1.013 bar and 100 bar
with a maximum superheated steam temperature of 500ºC.
(a) Explain why H2-H1 is approximated as
zero?
(b) Explain why (PV) points within the dashed lines have a set
temperature that is determined by pressure.
(c) How much steam has condensed in the adiabatic cooling step?
Give you answer as a fractional mass.
(d) How much heat per kg is removed by the condenser in 4→1?
(e) How much heat...
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