Explain In the ideal Rankine cycle, compression in the pump is isentropic. True or False
Explain
In the ideal Rankine cycle, compression in the pump is isentropic.
True or False
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Explain
In the ideal Rankine cycle, compression in the pump is
isentropic.
True or False
An ideal Rankine cycle works according to the information shown in the figure. If the isentropic...
An ideal Rankine cycle works according to the information shown
in the figure.
If the isentropic efficiency of the pump is 80%, determine the
current work input of the pump and the most important flow is 12 kg
/ s.
T3 = 350 °C 3 MPa 10 kPa
2. For the ideal Rankine cycle case where the feed pump and turbine are isentropic, and...
2. For the ideal Rankine cycle case where the feed pump and
turbine are isentropic, and the electric motor on the feed pump and
the electric generator are 100% efficient:
a. Determine the specific enthalpy of the refrigerant at the
entry and exit of the feed pump, and the entry and exit of the
turbine; (8 Marks – 2 marks each)
b. Sketch and label the ideal process paths of the cycle on a
T-s diagram, an h-s diagram and...
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,...
8.12 Water is used as the working fluid in an ideal Rankine cycle. The steam is supplied as superheated steam at 30 bar,...
8.12 Water is used as the working fluid in an ideal Rankine cycle. The steam is supplied as superheated steam at 30 bar, 440°C. The condenser pressure is 0.5 bar. If isentropic efficiency of turbine and pump are 90% and 85%, respectively, determine the thermal efficiency of the cycle.
A shell-and-tube-type recuperator the feedwater temperature increases as the extracted steam condenses on the outside of...
A shell-and-tube-type recuperator the feedwater temperature increases as the extracted steam condenses on the outside of the tubes carrying the feedwater is an opened type feedwater heater 1. a. TRUE/FALSE 2. A vapor power plant that operates with a steam generator at a pressure of 19 MPa is a supercritical vapor power plant a. TRUE/FALSE Lowering the condenser pressures raises the maximum temperature of heat rejection from the Rankine cycle. 3. a. TRUE/FALSE For an ideal Rankine cycle the compression...
Water is the working substance for an ideal Rankine cycle. The condenser pressure is equal to...
Water is the working substance for an ideal Rankine cycle. The condenser pressure is equal to 7.5 kPa. The boiler pressure is 8 MPa. Find: a) The specific work required by the pump b) The specific heat addition for the boiler c) The specific heat rejection for the condenser d) The specific work out of the turbine e) The thermal efficiency of the cycle 2. Solve problem 1, but this time assuming that the temperature at the inlet of the...
(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
a steam (H2O) power plant using an ideal Rankine cycle has intel of pump at 50c...
a steam (H2O) power plant using an ideal Rankine cycle has intel of pump at 50c and inlet at 3MPa and 500c. 1-the temperature at turbine exit is? 2-the quality at condenser inlet? 3-the work input for pump is? 4-the specific entropy(in kj/kg.k) at boiler inlet is?
A steam power plant operates on an ideal reheat Rankine cycle between the pressure limits of...
A steam power plant operates on an ideal reheat Rankine cycle between the pressure limits of 5 MPa and 100 kPa. The temperature of the steam att the turbine is 500 C degree and the mass flow rate of steam through the cycle is 35 kg/s. a) Determine the thermal efficiency of the cycle. b) determine the net power output of the power plant ( Assume both the turbine and the pump have isentropic efficiency of 100%). c) Draw the...
QUESTION 3 A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is...
QUESTION 3 A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat water from 15°C to 45°C at a rate of 0.12 kg/s. the condenser and evaporator pressures are 1.4 and 0.32 MPa, respectively Determine: (a) The power input to the heat pump
QUESTION 3 A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat water from 15°C to 45°C at a rate of 0.12 kg/s....
An ideal Rankine cycle works according to the information shown
in the figure.
If the isentropic efficiency of the pump is 80%, determine the
current work input of the pump and the most important flow is 12 kg
/ s.
T3 = 350 °C 3 MPa 10 kPa
2. For the ideal Rankine cycle case where the feed pump and
turbine are isentropic, and the electric motor on the feed pump and
the electric generator are 100% efficient:
a. Determine the specific enthalpy of the refrigerant at the
entry and exit of the feed pump, and the entry and exit of the
turbine; (8 Marks – 2 marks each)
b. Sketch and label the ideal process paths of the cycle on a
T-s diagram, an h-s diagram and...
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 shell-and-tube-type recuperator the feedwater temperature increases as the extracted steam condenses on the outside of the tubes carrying the feedwater is an opened type feedwater heater 1. a. TRUE/FALSE 2. A vapor power plant that operates with a steam generator at a pressure of 19 MPa is a supercritical vapor power plant a. TRUE/FALSE Lowering the condenser pressures raises the maximum temperature of heat rejection from the Rankine cycle. 3. a. TRUE/FALSE For an ideal Rankine cycle the compression...
(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
QUESTION 3 A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat water from 15°C to 45°C at a rate of 0.12 kg/s. the condenser and evaporator pressures are 1.4 and 0.32 MPa, respectively Determine: (a) The power input to the heat pump
QUESTION 3 A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat water from 15°C to 45°C at a rate of 0.12 kg/s....
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