Saturated liquid water at 10.0 MPa is throttled through a partially open valve (isenthalpic process) and...
- Saturated liquid water at 10.0 MPa is throttled through a partially open valve (isenthalpic process) and discharged into a tank at a pressure 0.1 MPa adiabatically, aergonically, and without any change in its kinetic or potential energy. (NOTE: When the pressure on saturated liquid water is suddenly reduced in an adiabatic aergonic, steady flow process, part of the initial liquid is very quickly converted into a saturated vapor at the lower pressure, with the vaporization energy (heat of vaporization) coming from the remaining liquid. The
resulting vapor is called flash steam because the liquid appears to “flash” into a vapor as it expands into the low pressure region). Determine:
- The exit temperature of the flash steam
- The amount of flash steam produced (quality)
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Saturated liquid water at 10.0 MPa is throttled through a
partially open valve (isenthalpic process) and...
A saturated liquid–vapor mixture of water, in a pipe line at 1.5 MPa is throttled to...
A saturated liquid–vapor mixture of water, in a pipe line at 1.5 MPa is throttled to 100 kPa and 150°C. Determine (a) the quality of the mixture (b) the entropy change during the throttling process.
(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?
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic...
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic mixing chamber where it is mixed with compressed liquid water at 1 MPa, 50 C. The exiting mass flow is 100 kg/s of saturated liquid at 1 MPa. For steady state operation, determine a) te mass flows of steam and liquid that enter, b) the rate of entropy generation due to throttling, and the rate of entropy generation due to mixing, c) te associa...
A 2-m rigid insulated tank initially containing saturated water vapor at 1.2 MPa is connected through...
A 2-m rigid insulated tank initially containing saturated water vapor at 1.2 MPa is connected through a valve to a supply line that carries steam at 400 °C. Now, the valve is opened, and steam is allowed to flow slowly into the tank until the pressure in the tank rises to 2.5 MPa. At this instant, the tank temperature is measured to be 350 °C. Determine a) the mass of the steam that has entered the tank from the supply...
Figure provides steady-state data for a throttling valve in series with a heat exchanger. Saturated liquid...
Figure provides steady-state data
for a throttling valve in series with a heat exchanger. Saturated
liquid Refrigerant 134a enters the valve at T1 = 36 degrees Celsius
with a mass flow rate of 0.26 kg/s and is throttled to T2 = -8
degrees Celsius. The refrigerant then enters the heat exchanger,
exiting as saturated vapor with no significant decrease in
pressure. In a separate stream, liquid water enters the heat
exchanger at T4 = 20 degrees Celsius and exits as...
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water....
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water. A steady flow of saturated liquid water enters at 1 at a pressure of P, = 200 kPa and passes through a valve which reduces the pressure to P, = 100 kPa. The resulting mixture enters a separation tank, from which saturated vapour at 4 flows out to a compressor which compresses it to Ps = 300 kPa, while saturated liquid at 3 is...
Two flow streams of water, one at 0.6 MPa, saturated vapor (note that this is saturated steam-only vapor) at a rate of 2.11 kg/s, and the other one at 0.6 MPa, 600°C at a rate of 2.52 kg/s, mix adiabatically in a steady flow process to produce a single fl
Two flow streams of water, one at 0.6 MPa, saturated vapor (note that this is saturated steam-only vapor) at a rate of 2.11 kg/s, and the other one at 0.6 MPa, 600°C at a rate of 2.52 kg/s, mix adiabatically in a steady flow process to produce a single flow out at 0.6 MPa. Determine the temperature (°C) of the flow out stream.Please use SI units
In this system, the liquid refrigerant expands in the first expansion valve to the flash chamber...
In this system, the liquid refrigerant expands in the first expansion valve to the flash chamber pressure, which is the same as the compressor interstage pressure. Part of the liquid vaporizes during this process. This saturated vapor (state 3) is mixed with the superheated vapor from the low-pressure compres- sor (state 2), and the mixture enters the high-pressure compressor at state 9, This is, in essence, a regeneration process. The saturated liquid (state ?) expands through the second expansion valve...
Consider geothermal hot water at P1 and T1; it is throttled to P2 in a unit called a flasher and ...
Consider geothermal hot water at P1 and T1; it is throttled to P2 in a unit called a flasher and satu rated vapor is used to drive a turbine which exhausts a wet mixture at P3. The saturated liquid is returned back to the ground. As flash pressure P2 is decreased, more vapor is produced and hence, more mass of vapor is sent to turbine. However, expansion ratio in turbine is reduced with reduced work output per unit mass of...
Thermodynamics: Valve and Heat Exchange 4.95
Figure P4.95 provides steady-state data for a throttling valve in series with a heat exchanger. Saturated liquid Refrigerant134a enters the valve atT1=36 degrees C with a mass flow rate of 0.26 kg/s and is throttled to T2 = -8degrees C. The refrigerant then enters the heat exchanger, exiting as saturated vapor with no significant decrease in pressure. In a separate stream, liquid water enters the heat exchanger at T4 = 20 degrees C and exits as a liquid atT5= 10...
(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?
Steam at 10 MPa, 600 'C is throttled to 1 MPa, and fed into an adiabatic mixing chamber where it is mixed with compressed liquid water at 1 MPa, 50 C. The exiting mass flow is 100 kg/s of saturated liquid at 1 MPa. For steady state operation, determine a) te mass flows of steam and liquid that enter, b) the rate of entropy generation due to throttling, and the rate of entropy generation due to mixing, c) te associa...
A 2-m rigid insulated tank initially containing saturated water vapor at 1.2 MPa is connected through a valve to a supply line that carries steam at 400 °C. Now, the valve is opened, and steam is allowed to flow slowly into the tank until the pressure in the tank rises to 2.5 MPa. At this instant, the tank temperature is measured to be 350 °C. Determine a) the mass of the steam that has entered the tank from the supply...
Figure provides steady-state data
for a throttling valve in series with a heat exchanger. Saturated
liquid Refrigerant 134a enters the valve at T1 = 36 degrees Celsius
with a mass flow rate of 0.26 kg/s and is throttled to T2 = -8
degrees Celsius. The refrigerant then enters the heat exchanger,
exiting as saturated vapor with no significant decrease in
pressure. In a separate stream, liquid water enters the heat
exchanger at T4 = 20 degrees Celsius and exits as...
5.(14 marks total) The sketch shows a system for producing superheated steam from hot liquid water. A steady flow of saturated liquid water enters at 1 at a pressure of P, = 200 kPa and passes through a valve which reduces the pressure to P, = 100 kPa. The resulting mixture enters a separation tank, from which saturated vapour at 4 flows out to a compressor which compresses it to Ps = 300 kPa, while saturated liquid at 3 is...
In this system, the liquid refrigerant expands in the first expansion valve to the flash chamber pressure, which is the same as the compressor interstage pressure. Part of the liquid vaporizes during this process. This saturated vapor (state 3) is mixed with the superheated vapor from the low-pressure compres- sor (state 2), and the mixture enters the high-pressure compressor at state 9, This is, in essence, a regeneration process. The saturated liquid (state ?) expands through the second expansion valve...
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