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5. Which of the following does not improve the efficiency of Rankine Cycle a. Increasing the...
What is the thermal efficiency of the Rankine Cycle? = nth Wout Lin O nth -1...
What is the thermal efficiency of the Rankine Cycle? = nth Wout Lin O nth -1 TH TL Wout O nth Lout O nth 1 TL ΤΗ Yout = nth =1- Pin Onth Wnet Inet Match the following modified Rankine cycles with their descriptions: Ideal Reheat Rankine Cycle ✓ [Choose ] The turbine expands the steam in two stages. Between Stage 1 and Stage 2, the steam returns to the boiler where heat is transferred to the steam in a...
Tutorial Questions 1 1. Water is the working fluid in an ideal Rankine cycle. The condenser...
Tutorial Questions 1.1. Water is the working fluid in an ideal Rankine cycle. The condenser pressure is kPa, and saturated vapor enters the turbine at 10 MPa. Determine the heat transfer rates, in kJ per kg of steam flowing, for the working fluid passing through the boiler and condenser and calculate the thermal efficiency.2. Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa ....
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal...
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal turbine at 6.9 MPala) as a saturated vapor. Condenser pressure is 6.9 kPaſa). The specific enthalpy of the subcooled condensate/feedwater at the discharge of the feedwater pump (h) is 166.36 kJ/kg. Identify the specific enthalpy (in kJ/kg) of the steam entering the turbine. 166.36 Calculate the quality (in %) of steam-water mixture leaving the turbine. Calculate the specific enthalpy (in kJ/kg) of the steam...
3. The Rankine cycle is the ideal cycle for vapor-driven power plants. A Rankine cycle with...
3. The Rankine cycle is the ideal cycle for vapor-driven power plants. A Rankine cycle with water as the working fluid operates between the pressure limits of 4 MPa in the boiler and 20 kPa in the condenser. The turbine inlet temperature is 700°C and the flow rate is 30 kg/s. State the assumptions and show the complete reduction of the governing equations. (Total: 20 pts.) (a) Show the cycle on a T-s diagram. (b) Determine the power produced by...
(30 points) Rankine Cycle An ideal Rankine cycle has a turbine power output of 4 MW....
(30 points) Rankine Cycle An ideal Rankine cycle has a turbine power output of 4 MW. Saturated liquid at 20 kPa leaves the condenser, and the vapor at the exit to the isentropic turbine has a quality of 95 percent. The boiler pressure is 1.4 MPa. a. Find the mass flow rate of the steam (kg/s) b. What is the heat transfer into the boiler? c. What is the thermal efficiency for this cycle? Condenser
Both simple Rankine and Brayton cycles produce a net power of 200MW. Air enters the compressor...
Both simple Rankine and Brayton cycles produce a net power of
200MW. Air enters the compressor at 100kPa, 25°C. The compressor
pressure ratio is 12.0, and the turbine inlet temperature is
1127°C. The turbine and compressor each have isentropic
efficiencies of 90.0%. Heat addition is from a thermal reservoir
with a temperature of 1127°C. Heat rejection is to a thermal
reservoir at an ambient temperature of 25°C. The HRSG is a set of
large heat exchangers having, on one side,...
Consider a steam power plant which operates on the simple ideal Rankine cycle (shown in the...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at...
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at 90 bar and 550°C and is condensed in the condenser at a pressure of 1.3 bar. a. Using the steam tables provided, state: The specific enthalpy of the superheated steam at 90 bar and 550°C. The specific entropy of the superheated steam at 90 bar and 550°C. iii) The specific enthalpy and specific density of the saturated water at 1.3 bar. iv) The specific...
In a vapor-compression refrigeration cycle, ammonia exits the evaporator as saturated vapor at -22 °C. There...
In a vapor-compression refrigeration cycle, ammonia exits the
evaporator as saturated vapor at -22 °C. There are
irreversibilities in the compressor. The refrigerant enters the
condenser at 16 bar and 160 °C, and saturated liquid exits at 16
bar. There is no significant heat transfer between the compressor
and its surroundings, and the refrigerant passes through the
evaporator with a negligible change in pressure.
Calculate the coefficient of performance, b, and the isentropic
compressor efficiency, defined as:
2s Condenser Expansion...
A vapo the condenser is saturated liquid with an enthalpy of 220 kJ/kg. The outlet stream of the ...
A vapo the condenser is saturated liquid with an enthalpy of 220 kJ/kg. The outlet stream of the evaporator has a absolute pressure of 0.1 MPa, and is superheated vapor that is 30 °C above the dew point. a) (7 points) If the outlet stream of the compressor is superheated vapor at 90 °C, what is the efficiency of the compressor? AH H3- H2, (AH)s - H3-H2 b) (6 points) Calculate the coefficient of performance for this refrigerator r-compression refrigeration...
What is the thermal efficiency of the Rankine Cycle? = nth Wout Lin O nth -1 TH TL Wout O nth Lout O nth 1 TL ΤΗ Yout = nth =1- Pin Onth Wnet Inet Match the following modified Rankine cycles with their descriptions: Ideal Reheat Rankine Cycle ✓ [Choose ] The turbine expands the steam in two stages. Between Stage 1 and Stage 2, the steam returns to the boiler where heat is transferred to the steam in a...
Question 5 1.5/3 points In a Rankine cycle, steam leaves the boiler and enters the ideal turbine at 6.9 MPala) as a saturated vapor. Condenser pressure is 6.9 kPaſa). The specific enthalpy of the subcooled condensate/feedwater at the discharge of the feedwater pump (h) is 166.36 kJ/kg. Identify the specific enthalpy (in kJ/kg) of the steam entering the turbine. 166.36 Calculate the quality (in %) of steam-water mixture leaving the turbine. Calculate the specific enthalpy (in kJ/kg) of the steam...
3. The Rankine cycle is the ideal cycle for vapor-driven power plants. A Rankine cycle with water as the working fluid operates between the pressure limits of 4 MPa in the boiler and 20 kPa in the condenser. The turbine inlet temperature is 700°C and the flow rate is 30 kg/s. State the assumptions and show the complete reduction of the governing equations. (Total: 20 pts.) (a) Show the cycle on a T-s diagram. (b) Determine the power produced by...
(30 points) Rankine Cycle An ideal Rankine cycle has a turbine power output of 4 MW. Saturated liquid at 20 kPa leaves the condenser, and the vapor at the exit to the isentropic turbine has a quality of 95 percent. The boiler pressure is 1.4 MPa. a. Find the mass flow rate of the steam (kg/s) b. What is the heat transfer into the boiler? c. What is the thermal efficiency for this cycle? Condenser
Both simple Rankine and Brayton cycles produce a net power of
200MW. Air enters the compressor at 100kPa, 25°C. The compressor
pressure ratio is 12.0, and the turbine inlet temperature is
1127°C. The turbine and compressor each have isentropic
efficiencies of 90.0%. Heat addition is from a thermal reservoir
with a temperature of 1127°C. Heat rejection is to a thermal
reservoir at an ambient temperature of 25°C. The HRSG is a set of
large heat exchangers having, on one side,...
Consider a steam power plant which operates on the simple ideal
Rankine cycle (shown in the next page), where the boiler pressure
is 3 MPa and the condenser saturation temperature is 50°C. The
temperature at the exit of the boiler is 500°C. Water leaves the
condenser as a saturated liquid. The mass flow rate through each
component is 15 kg/s. Calculate:
1. The power output of the steam power plant
2. The thermal efficiency of the steam power plant
Now,...
A steam power plant is operating on the ideal Rankine cycle. Steam enters the turbine at 90 bar and 550°C and is condensed in the condenser at a pressure of 1.3 bar. a. Using the steam tables provided, state: The specific enthalpy of the superheated steam at 90 bar and 550°C. The specific entropy of the superheated steam at 90 bar and 550°C. iii) The specific enthalpy and specific density of the saturated water at 1.3 bar. iv) The specific...
In a vapor-compression refrigeration cycle, ammonia exits the
evaporator as saturated vapor at -22 °C. There are
irreversibilities in the compressor. The refrigerant enters the
condenser at 16 bar and 160 °C, and saturated liquid exits at 16
bar. There is no significant heat transfer between the compressor
and its surroundings, and the refrigerant passes through the
evaporator with a negligible change in pressure.
Calculate the coefficient of performance, b, and the isentropic
compressor efficiency, defined as:
2s Condenser Expansion...
A vapo the condenser is saturated liquid with an enthalpy of 220 kJ/kg. The outlet stream of the evaporator has a absolute pressure of 0.1 MPa, and is superheated vapor that is 30 °C above the dew point. a) (7 points) If the outlet stream of the compressor is superheated vapor at 90 °C, what is the efficiency of the compressor? AH H3- H2, (AH)s - H3-H2 b) (6 points) Calculate the coefficient of performance for this refrigerator r-compression refrigeration...
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