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F uture is 20°c determine the thermal efficiency of this power plant. 7-69 A geothermal site...
CHAPTER 10 10-136 A 10-MW geothermal power plant is being consid- ered at a site where geothermal...
CHAPTER 10 10-136 A 10-MW geothermal power plant is being consid- ered at a site where geothermal water at 230°C is available. Geothermal water is to be flashed into a chamber to a lower pressure where part of the water evaporates. The liquid is returned to the ground while the vapor is used to drive the steam turbine. The pressures at the turbine inlet and the tur- bine exit are to remain above 200 kPa and 8 kPa, respec- tively....
A power plant taps steam superheated by geothermal energy to 421 K (the temperature of the...
A power plant taps steam superheated by geothermal energy to 421 K (the temperature of the hot reservoir) and uses the steam to do work in turning the turbine of an electric generator. The steam is then converted back into water in a condenser at 321 K (the temperature of the cold reservoir), after which the water is pumped back down into the earth where it is heated again. The output power (work per unit time) of the plant is...
In Geothermal-steam power cycle, the source of heat is the hot water from well. The heat...
In Geothermal-steam power cycle, the source of heat is the hot
water from well. The heat exchanger receive hot water at Tg1= 105
oC and the water leaves at 40 oC as shown in Figure 3. Steam exits
the boiler at 40 bar, 300 oC, and it exits the turbine at 1 bar.
Saturated liquid water exits the condenser at 1 bar. The plant
operate to generate 20 MW electric power with generator efficiency
of 0.95. The isentropic efficiency of...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
Thermodynamics: Vapor Power Plant
Figure P6.165 shows a simple vapor power plant operating at steady state with water as the working fluid.Data at key locations are given on the figure. The mass flow rate of the water circulating through the components is 109 kg/s. Stray heat transfer and kinetic and potential energy effects can be ignored. Determine(a) the net power developed, in MW.(b) the thermal efficiency.(c) the isentropic turbine efficiency.(d) the isentropic pump efficiency.(e) the mass flow rate of the cooling water, in kg/s.(f)...
Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is...
Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is to be analyzed in this problem. The reactor vessel (like a boiler) receives water from a pump and with heat addition produces water at 1500 lbf/in.2 and 500 F. The high-temperature compressed liquid from the reactor is throttled (in a valve) into a flash evaporator separating the fluid into vapor (saturated) and liquid at 300 lbf/in.2. The fraction of the water that...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The system uses the temperature gradient between the surface water that is heated by the sun and much colder deep seawater to produce electricity. For more details on how the plant works, click here: OTEC Hydropower Explained a. If the temperature of the surface water is 34.9°C and the temperature of the deep seawater is 6.9°C , determine the maximum (Carnot) efficiency of the system....
Superheated steam at 20 MPa, 560oC enters the turbine of a vapor power plant. The pressure...
Superheated steam at 20 MPa, 560oC enters the turbine of a vapor power plant. The pressure at the exit of the turbine is 0.7 bar, and liquid leaves the condenser at 0.4 bar at 75oC. The pressure is increased to 20.1 MPa across the pump and the specific enthalpy is 338.14 kJ/kg. The turbine isentropic efficiency is 81%. Cooling water enters the condenser at 20oC with a mass flow rate of 70.7 kg/s and exits the condenser at 38oC. For...
5. A binary geothermal power plant in CA has brine coming out of the ground at...
5. A binary geothermal power plant in CA has brine coming out of the ground at 280 °F and loses its energy to freon in a tube and shell heat exchanger resulting in the brine temperature reducing to 110 °F. The brine flow rate is 5 x 10 lb/h. The Freon-12 leaves the tube and shell heat exchanger at 230 °F/577 psia. It expands in a turbine to 128.24 psia with a polytropic efficiency of 0.70. The work of the...
C. Calculation problems (12 marks each) 6. Generating electricity from a nuclear power plant A thermal...
C. Calculation problems (12 marks each) 6. Generating electricity from a nuclear power plant A thermal heat at a rate of 1.2 GW and at a temperature of 450 C. This heat is used in an engine that is connected to the sea water at T 20°C as low temperature reservoir. The engine has an efficiency of 51%. nuclear power plant generates (A) What is the electrical power output of this power plant? (The electrical enerzy output is equal to...
CHAPTER 10 10-136 A 10-MW geothermal power plant is being consid- ered at a site where geothermal water at 230°C is available. Geothermal water is to be flashed into a chamber to a lower pressure where part of the water evaporates. The liquid is returned to the ground while the vapor is used to drive the steam turbine. The pressures at the turbine inlet and the tur- bine exit are to remain above 200 kPa and 8 kPa, respec- tively....
In Geothermal-steam power cycle, the source of heat is the hot
water from well. The heat exchanger receive hot water at Tg1= 105
oC and the water leaves at 40 oC as shown in Figure 3. Steam exits
the boiler at 40 bar, 300 oC, and it exits the turbine at 1 bar.
Saturated liquid water exits the condenser at 1 bar. The plant
operate to generate 20 MW electric power with generator efficiency
of 0.95. The isentropic efficiency of...
Design of a Solar Thermal Power Plant The scheme of the solar thermal power plant is depicted in Figure 1. It features a Rankine-cycle based solar thermal power plant using tower technology. Technical data and assumptions: • = net electrical power output (turbine - pump) = 12 MW • Working fluid: water. • Condenser: outlet temperature = 320 K, outlet steam quality = 0%; no pressure drop through condenser. • Pump: adiabatic, outlet pressure = 170 bar; outlet temperature =...
Ctri Alt Part B (80 points) A nuclear reactor power plant utilizing water as the working fluid is to be analyzed in this problem. The reactor vessel (like a boiler) receives water from a pump and with heat addition produces water at 1500 lbf/in.2 and 500 F. The high-temperature compressed liquid from the reactor is throttled (in a valve) into a flash evaporator separating the fluid into vapor (saturated) and liquid at 300 lbf/in.2. The fraction of the water that...
An experimental Ocean Thermal Energy Conversion (OTEC) power plant in Hawaii became operational in 2015. The system uses the temperature gradient between the surface water that is heated by the sun and much colder deep seawater to produce electricity. For more details on how the plant works, click here: OTEC Hydropower Explained a. If the temperature of the surface water is 34.9°C and the temperature of the deep seawater is 6.9°C , determine the maximum (Carnot) efficiency of the system....
5. A binary geothermal power plant in CA has brine coming out of the ground at 280 °F and loses its energy to freon in a tube and shell heat exchanger resulting in the brine temperature reducing to 110 °F. The brine flow rate is 5 x 10 lb/h. The Freon-12 leaves the tube and shell heat exchanger at 230 °F/577 psia. It expands in a turbine to 128.24 psia with a polytropic efficiency of 0.70. The work of the...
C. Calculation problems (12 marks each) 6. Generating electricity from a nuclear power plant A thermal heat at a rate of 1.2 GW and at a temperature of 450 C. This heat is used in an engine that is connected to the sea water at T 20°C as low temperature reservoir. The engine has an efficiency of 51%. nuclear power plant generates (A) What is the electrical power output of this power plant? (The electrical enerzy output is equal to...
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