Perform calculation of steam Rankine cycle and study ORC systems: o Steam Rankine cycle: ▪ Assume...
Perform calculation of steam Rankine cycle and study ORC systems: o Steam Rankine cycle:
▪ Assume steady-state with 1 kW power output
▪ Evaporating temperature is 75°C. The quality of the heater outlet is q = 1.
▪ Condensing temperature is 35 °C. The quality of the cooler outlet is q = 0.
▪ The adiabatic efficiency of the turbine is 70%
▪ The adiabatic efficiency of the pump is 80%
▪ Calculate these values using the steam tables:
• Minimum pressure [kPa]
• Maximum pressure [kPa]
• Volumetric flow rate at the turbine outlet [m3/h]
• Efficiency of the Rankine cycle [%]
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Perform calculation of steam Rankine cycle and study ORC
systems: o Steam Rankine cycle:
▪ Assume...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C and excits at 12.35 kPa. The cycle produce 10,000 KW of electricity. Determine the cycle efficiency and the steam amount needed. PROBLEM 2. For the figure below, find the cycle efficiency given the following: Consider 1 kg flowing The pressure at point 1, 5 and 6 are 10 kPa, 3000 kPa, and 1000 kPa. The temperature at point 5 is 350 °C. The steam...
2) A Rankine cycle generates steam at 5 MPa and 450°C leaving the boiler and the...
2) A Rankine cycle generates steam at 5 MPa and 450°C leaving the boiler and the turbine exhaust pressure is 7.5 kPa. The adiabatic efficiency of the turbine is 85%, and that of the pump is 70%. Determine (a) the net work in kW. (b) the thermal efficiency for the cycle, c) the change in availability of the steam as it passes through the boiler, and d) the irreversibility for the cycle. You may assume the environment is at 100...
Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and temperature...
Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and temperature 600oC is fed to a turbine. Exhaust from the turbine enters a condenser at 100 kPa, where it is condensed to saturated liquid, which is then pumped to the boiler. (a) (20 pts.) What is the thermal efficiency η of an ideal Rankine cycle operating at these conditions? (b) (5 pts.) If the net power production of the cycle is 80,000 kW, what is...
(2) Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and...
(2) Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and temperature 600°C is fed to a turbine. Exhaust from the turbine enters a condenser at 100 kPa, where it is condensed to saturated liquid, which is then pumped to the boiler. (a) (20 pts.) What is the thermal efficiency n of an ideal Rankine cycle operating at these conditions? (b) (5 pts.) If the net power production of the cycle is 80,000 kW, what...
Consider a steam power plant that operates on a reheat Rankine cycle and has a net...
Consider a steam power plant that operates on a reheat Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 500°C and the low-pressure turbine at 1 MPa and 500°C. Steam leaves the condenser as a saturated liquid at a pressure of 10 kPa. The isentropic efficiency of the turbine is 74 percent and that of the pump is 95 percent. Determine the quality (or temperature, if superheated) of the...
In a regenerative ideal Rankine cycle, hot water steam enters the turbine at 10 MPa and...
In a regenerative ideal Rankine cycle, hot water steam enters the turbine at 10 MPa and 480°C. condenser inlet pressure is 10 kPa. Some steam is taken from the turbine at a pressure of 0.7 MPa, feeds a Closed Feed water heater and is sent to the condenser as a saturated liquid at a pressure of 0.7 MPa at the outlet. The other outlet (cold) is at a pressure of 10 MPa and a saturation temperature of 0.7 MPa. According...
Consider a steam power plant that operates on a reheat Rankine cycle and has a net...
Consider a steam power plant that operates on a reheat Rankine cycle and has a net power output of 80 MW. Steam enters the high-pressure turbine at 10 MPa and 550°C and the low-pressure turbine at 1 MPa and 550°C. Steam leaves the condenser as a saturated liquid at a pressure of 10 kPa. The isentropic efficiency of the turbine is 80 percent, and that of the pump is 95 percent. Show the cycle on a T-s diagram with respect...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters...
Consider a 210-MW steam power plant that operates on a simple ideal Rankine cycle. Steam enters the turbine at 10 MPa and 500°C and is cooled in the condenser at a pressure of 10 kPa. Assume an isentropic efficiency of 85 percent for both the turbine and the pump. (a) the quality of the steam at the turbine exit (b) the thermal efficiency of the cycle (c) the mass flow rate of the steam.
A basic Rankine cycle is to produce 200 MW of power. The inlet steam pressure can...
A basic Rankine cycle is to produce 200 MW of power. The inlet steam pressure can be no higher than 15 MPa, and the outside environment is 15 degrees Celsius. The isentropic efficiency of the turbine is 0.8, and the isentropic efficiency of the pump is 0.75. (a) Design a basic cycle, specifying state properties at each state, the required mass flow rate of the steam, the thermal efficiency of the cycle, and the required mass flow rate of either...
step by step as illustrated in Fig. 8.5 regenerative cycle, 8.7. A steam power plant operating includes just one fee...
step by step
as illustrated in Fig. 8.5 regenerative cycle, 8.7. A steam power plant operating includes just one feedwater heater. Steam enters the turbine at 4500 kPa and 500°C and exhausts at 20 kPa. Steam for the feedwater heater is extracted from the turbine at 350 kPa, and in condensing raises the temperature of the feedwater to within 6°C of its condensation temperature at 350 kPa. If the turbine and pump efficiencies are both 0.78, what is the thermal...
PROBLEM 1. Consider a Rankine cycle, where steam enters the turbine @ 5 Mpa, 500 *C and excits at 12.35 kPa. The cycle produce 10,000 KW of electricity. Determine the cycle efficiency and the steam amount needed. PROBLEM 2. For the figure below, find the cycle efficiency given the following: Consider 1 kg flowing The pressure at point 1, 5 and 6 are 10 kPa, 3000 kPa, and 1000 kPa. The temperature at point 5 is 350 °C. The steam...
2) A Rankine cycle generates steam at 5 MPa and 450°C leaving the boiler and the turbine exhaust pressure is 7.5 kPa. The adiabatic efficiency of the turbine is 85%, and that of the pump is 70%. Determine (a) the net work in kW. (b) the thermal efficiency for the cycle, c) the change in availability of the steam as it passes through the boiler, and d) the irreversibility for the cycle. You may assume the environment is at 100...
(2) Steam generated in a Rankine steam power cycle at a pressure of 8 MPa and temperature 600°C is fed to a turbine. Exhaust from the turbine enters a condenser at 100 kPa, where it is condensed to saturated liquid, which is then pumped to the boiler. (a) (20 pts.) What is the thermal efficiency n of an ideal Rankine cycle operating at these conditions? (b) (5 pts.) If the net power production of the cycle is 80,000 kW, what...
In a regenerative ideal Rankine cycle, hot water steam enters the turbine at 10 MPa and 480°C. condenser inlet pressure is 10 kPa. Some steam is taken from the turbine at a pressure of 0.7 MPa, feeds a Closed Feed water heater and is sent to the condenser as a saturated liquid at a pressure of 0.7 MPa at the outlet. The other outlet (cold) is at a pressure of 10 MPa and a saturation temperature of 0.7 MPa. According...
step by step
as illustrated in Fig. 8.5 regenerative cycle, 8.7. A steam power plant operating includes just one feedwater heater. Steam enters the turbine at 4500 kPa and 500°C and exhausts at 20 kPa. Steam for the feedwater heater is extracted from the turbine at 350 kPa, and in condensing raises the temperature of the feedwater to within 6°C of its condensation temperature at 350 kPa. If the turbine and pump efficiencies are both 0.78, what is the thermal...
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