Steam is to be condensed in the condenser of a steam power plant
at a temperature of 50C with cooling
water from a nearby lake, which enters the tubes of the condenser
at 18C at a rate of 101 kg/s and leaves
at 27C. Determine the rate of condensation of the steam in the
condenser.
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Steam is to be condensed in the condenser of a steam power plant
at a temperature...
3-40 In the condenser of a steam power plant the steam from the turbine enters the...
3-40 In the condenser of a steam power plant the steam from the turbine enters the condenser at 0.10 bar with a quality of 95 percent and leaves at the same pressure as a saturated liquid. The steam is condensed by transferring heat to a stream of cooling water which enters at 1.3 bars and 5°C and leaves the heat exchanger at 1.2 bars and 25°C·The environmental temperature is 5°C. Determine a. the change in stream availability (exergy) of the...
The condenser of a large steam power plant is a heat exchanger in which steam is...
The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a shell-and-tube heat exchanger consisting of a single shell and 30,000 tubes, each executing two passes (see figure below). The tubes are of thin wall construction with D=25mm, and steam condenses on their outer surface with an associated convection coefficient ho=11,000W/ m K The heat transfer rate that must be effected by the heat exchanger...
The condenser downstream of the turbine in a large Rankine cycle power plant is constructed of...
The condenser downstream of the turbine in a large Rankine cycle power plant is constructed of 30,000 25-mm tubes. The steam condenses at 50 ºC with a heat transfer coefficient of 9,000 W/m2 ·K on the outside the tubes. The cooling water enters the tube side of the condenser at 20 ºC at a flow rate of 17,000 kg/s. For a 1000 MW (net) power output and a cycle thermal efficiency of 42%, determine: a. the cooling rate required (in...
Steam is to be condensed by direct injection of cold water. Steam enters the condenser at...
Steam is to be condensed by direct injection of cold water. Steam enters the condenser at a rate of 450 kg/h with a quality of 0.90 and a pressure of 1 atm. The estimated heat loss from the condenser to the surroundings is 8500 kJ/h. If the cold water enters with a temperature of 15°C and the mixture leaves at 95°c, determine the rate of cooling water required. 3. Φ 2-phase Steam . 9 3 -95c 2 Cold Note
Consider a steam power plant that operales on a simple ideal Rankine cycle and has a...
Consider a steam power plant that operales on a simple ideal Rankine cycle and has a net power output of 45 MW Steam enters the turbine at 7 MPa and 500 C and is cooled in the condenser at a pressure of 10 kPa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. Use T-s diagram with respect to saturation lines, and determine (a) the thermal eMooncy ofthe cycle (%)...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a parallel flow shell-and-tube heat exchanger consisting of a single shell and 1x10 tubes, each executing two passes. The inner diameter of tubes is D = 50 mm and its thickness is 5 mm (Do not ignore the thickness). The steam condenses on their outer surface. Thermal conductivity of the tube...
Cooling water available at 10°C is used to condense steam at 30°C in the condenser of...
Cooling water available at 10°C is used to condense steam at 30°C in the condenser of a power plant at a rate of 0.15 kg/s by circulating the cooling water through a bank of 5-m-long 1.2-cm-internal-diameter thin copper tubes. Water enters the tubes at a mean velocity of 4.75 m/s and leaves at a temperature of 24°C. The tubes are nearly isothermal at 30°C. The properties of water at the average temperature of (10+24)/2=17°C are: ρ = 998.7 kg/m3 cp...
. A steam power plant that operates on Rankine cycle has a net power output of...
. A steam power plant that operates on Rankine cycle has a net power output of 45 MW. Steam enters the turbine at 7 MPa and 500o C and is cooled in the condenser at a pressure of 10 kPa by running cooling water from a sea through the tubes of the condenser at rate of 2000 kg/s. Show the cycle on T‐s diagram with respect to saturation line, and determine (a) the thermal efficiency of the cycle, (b) the...
Problem 3 The condenser of a large power plant is to remove condensing at 30° C...
Problem 3 The condenser of a large power plant is to remove condensing at 30° C (hg-2430 kJ/ 500 MW of heat from steam kg). The cooling is to be accomplished by C and leaves w g eC) from a nearby river, which enters the tubes at diameter of 2 cm, and the overall heat transfer coefficient is 3500 W/m c. Determine the total length of the tubes required in the condenser heat exchanger is suitable for this task? es...
A combined gas-steam power plant uses a simple gas turbine for the topping cycle and a...
A combined gas-steam power plant uses a simple gas turbine for
the topping cycle and a simple Rankine cycle for the bottoming
cycle. Atmospheric air enters the compressor at 101 kPa and 20 °C,
and the maximum gas cycle temperature is 1100 °C. The
compressor pressure ratio is 8. The gas stream leaves the heat
exchanger at the saturation temperature of the steam flowing
through the heat exchanger. Steam enters the heat exchanger at a
pressure of 6 MPa and...
3-40 In the condenser of a steam power plant the steam from the turbine enters the condenser at 0.10 bar with a quality of 95 percent and leaves at the same pressure as a saturated liquid. The steam is condensed by transferring heat to a stream of cooling water which enters at 1.3 bars and 5°C and leaves the heat exchanger at 1.2 bars and 25°C·The environmental temperature is 5°C. Determine a. the change in stream availability (exergy) of the...
The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a shell-and-tube heat exchanger consisting of a single shell and 30,000 tubes, each executing two passes (see figure below). The tubes are of thin wall construction with D=25mm, and steam condenses on their outer surface with an associated convection coefficient ho=11,000W/ m K The heat transfer rate that must be effected by the heat exchanger...
Steam is to be condensed by direct injection of cold water. Steam enters the condenser at a rate of 450 kg/h with a quality of 0.90 and a pressure of 1 atm. The estimated heat loss from the condenser to the surroundings is 8500 kJ/h. If the cold water enters with a temperature of 15°C and the mixture leaves at 95°c, determine the rate of cooling water required. 3. Φ 2-phase Steam . 9 3 -95c 2 Cold Note
Consider a steam power plant that operales on a simple ideal Rankine cycle and has a net power output of 45 MW Steam enters the turbine at 7 MPa and 500 C and is cooled in the condenser at a pressure of 10 kPa by running cooling water from a lake through the tubes of the condenser at a rate of 2000 kg/s. Use T-s diagram with respect to saturation lines, and determine (a) the thermal eMooncy ofthe cycle (%)...
PROBLEM 3 (45 points) The condenser of a large steam power plant is a heat exchanger in which steam is condensed to liquid water. Assume the condenser to be a parallel flow shell-and-tube heat exchanger consisting of a single shell and 1x10 tubes, each executing two passes. The inner diameter of tubes is D = 50 mm and its thickness is 5 mm (Do not ignore the thickness). The steam condenses on their outer surface. Thermal conductivity of the tube...
Problem 3 The condenser of a large power plant is to remove condensing at 30° C (hg-2430 kJ/ 500 MW of heat from steam kg). The cooling is to be accomplished by C and leaves w g eC) from a nearby river, which enters the tubes at diameter of 2 cm, and the overall heat transfer coefficient is 3500 W/m c. Determine the total length of the tubes required in the condenser heat exchanger is suitable for this task? es...
A combined gas-steam power plant uses a simple gas turbine for
the topping cycle and a simple Rankine cycle for the bottoming
cycle. Atmospheric air enters the compressor at 101 kPa and 20 °C,
and the maximum gas cycle temperature is 1100 °C. The
compressor pressure ratio is 8. The gas stream leaves the heat
exchanger at the saturation temperature of the steam flowing
through the heat exchanger. Steam enters the heat exchanger at a
pressure of 6 MPa and...
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