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Which of the following are true for the limitations and impracticalities of the turbine of the Carnot vapour cycle? a b C d e Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. Difficulty in accomplishing a working fluid in a single phase at a high temperature. Fill in the blank with the appropriate word from the list of words given below. The thermal efficiency of the Rankine cycle can be increased by increasing the average temperature at which heat is transferred to the working fluid and/or by decreasing the average temperature at which heat is rejected to the cooling medium. The average temperature during heat rejection can be decreased by 1 the turbine exit pressure. Consequently, the condenser pressure of most vapor power plants is well below the atmospheric pressure. The average temperature during heat addition can be _2_by raising the boiler pressure or by. 3 the fluid to high temperatures. Difficulty in controlling the condensation process to desired quality at pump inlet. Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. f g Lowering the exhaust pressure or raising the boiler pressure, however, increases the moisture content. To take advantage of the improved efficiencies at higher boiler pressures and lower condenser pressures, steam is usually 4 _after expanding partially in the high-pressure turbine. This is done by extracting the steam after partial expansion in the high-pressure turbine, sending it back to the boiler where it is __5_________at________6_________ pressure, and returning it to the low-pressure turbine for complete expansion to the condenser pressure. Another way of increasing the thermal efficiency of the Rankine cycle is _7_ __. During a 8 process, liquid water (feedwater) leaving the pump is heated by steam bled off the turbine at some intermediate pressure in devices called feedwater heaters. The production of more than one useful form of energy (such as process heat and electric power) from the same energy source is called____9_ The overall thermal efficiency of a power plant can be increased by using a _10_ . The most common _11________ is the gas-steam combined cycle where a gas-turbine cycle operates at the high-temperature range and a steam-turbine cycle at the low-temperature range. Steam is heated by the high-temperature exhaust gases leaving the gas turbine. _12___ have a 13 thermal efficiency than the steam- or gas-turbine cycles operating alone.

Which of the following are true for the limitations and impracticalities of the turbine of the Carnot vapour cycle? a b C d e Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. Difficulty in accomplishing a working fluid in a single phase at a high temperature. Fill in the blank with the appropriate word from the list of words given below. The thermal efficiency of the Rankine cycle can be increased by increasing the average temperature at which heat is transferred to the working fluid and/or by decreasing the average temperature at which heat is rejected to the cooling medium. The average temperature during heat rejection can be decreased by 1 the turbine exit pressure. Consequently, the condenser pressure of most vapor power plants is well below the atmospheric pressure. The average temperature during heat addition can be _2_by raising the boiler pressure or by. 3 the fluid to high temperatures. Difficulty in controlling the condensation process to desired quality at pump inlet. Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. f g Lowering the exhaust pressure or raising the boiler pressure, however, increases the moisture content. To take advantage of the improved efficiencies at higher boiler pressures and lower condenser pressures, steam is usually 4 _after expanding partially in the high-pressure turbine. This is done by extracting the steam after partial expansion in the high-pressure turbine, sending it back to the boiler where it is __5_________at________6_________ pressure, and returning it to the low-pressure turbine for complete expansion to the condenser pressure. Another way of increasing the thermal efficiency of the Rankine cycle is _7_ __. During a 8 process, liquid water (feedwater) leaving the pump is heated by steam bled off the turbine at some intermediate pressure in devices called feedwater heaters. The production of more than one useful form of energy (such as process heat and electric power) from the same energy source is called____9_ The overall thermal efficiency of a power plant can be increased by using a _10_ . The most common _11________ is the gas-steam combined cycle where a gas-turbine cycle operates at the high-temperature range and a steam-turbine cycle at the low-temperature range. Steam is heated by the high-temperature exhaust gases leaving the gas turbine. _12___ have a 13 thermal efficiency than the steam- or gas-turbine cycles operating alone.

Refrigeration and Air Conditioning Technology (MindTap Course List)
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter47: High-pressure, Low-pressure, And Absorption Chilled-water Systems
Section: Chapter Questions
Problem 13RQ: The subcooling temperature in a condenser can be measured by taking the difference between the A....
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Which of the following are true for the limitations and impracticalities of the condenser of the Carnot vapour cycle? a Difficulty in controlling the condensation process to desired quality at pump inlet. b d e f Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. g Difficulty in accomplishing a working fluid in a single phase at a high temperature. Which of the following are true for the limitations and impracticalities of the turbine of the Carnot vapour cycle? a b C d Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. e f g Difficulty in controlling the condensation process to desired quality at pump inlet. Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. Difficulty in accomplishing a working fluid in a single phase at a high temperature. Fill in the blank with the appropriate word from the list of words given below. The thermal efficiency of the Rankine cycle can be increased by increasing the average temperature at which heat is transferred to the working fluid and/or by decreasing the average temperature at which heat is rejected to the cooling medium. The average temperature during heat rejection can be decreased by 1 the turbine exit pressure. Consequently, the condenser pressure of most vapor power plants is well below the atmospheric pressure. The average temperature during heat addition can be 2 by raising the boiler pressure or by 3 the fluid to high temperatures. Lowering the exhaust pressure or raising the boiler pressure, however, increases the moisture content. To take advantage of the improved efficiencies at higher boiler pressures and lower condenser pressures, steam is usually 4 after expanding partially in the high-pressure turbine. This is done by extracting the steam after partial expansion in the high-pressure turbine, sending it back to the boiler where it is pressure, and returning it to the low-pressure turbine for complete expansion to _5___________at 6 the condenser pressure. 7 Another way of increasing the thermal efficiency of the Rankine cycle is 8 During a process, liquid water (feedwater) leaving the pump is heated by steam bled off the turbine at some intermediate pressure in devices called feedwater heaters. The production of more than one useful form of energy (such as process heat and electric power) from the same energy source is called 9 The overall thermal efficiency of a power plant can be increased by using a 10 11 is the gas-steam combined cycle where a gas-turbine cycle operates at the high-temperature range and a steam-turbine cycle at the low-temperature range. Steam is heated by the high-temperature exhaust gases leaving the gas turbine. thermal efficiency than the steam- or gas-turbine cycles operating alone. have a 13 The most common 12
Transcribed Image Text:Which of the following are true for the limitations and impracticalities of the condenser of the Carnot vapour cycle? a Difficulty in controlling the condensation process to desired quality at pump inlet. b d e f Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. g Difficulty in accomplishing a working fluid in a single phase at a high temperature. Which of the following are true for the limitations and impracticalities of the turbine of the Carnot vapour cycle? a b C d Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. e f g Difficulty in controlling the condensation process to desired quality at pump inlet. Difficulty in designing a compressor that handles two phases. The challenge of device that can handle steam with high moisture content. Incident of wear and corrosion on device blades. Limitation in reaching a suitable maximum temperature. Limitation of the thermal efficiencies due to operation temperature. Difficulty in accomplishing a working fluid in a single phase at a high temperature. Fill in the blank with the appropriate word from the list of words given below. The thermal efficiency of the Rankine cycle can be increased by increasing the average temperature at which heat is transferred to the working fluid and/or by decreasing the average temperature at which heat is rejected to the cooling medium. The average temperature during heat rejection can be decreased by 1 the turbine exit pressure. Consequently, the condenser pressure of most vapor power plants is well below the atmospheric pressure. The average temperature during heat addition can be 2 by raising the boiler pressure or by 3 the fluid to high temperatures. Lowering the exhaust pressure or raising the boiler pressure, however, increases the moisture content. To take advantage of the improved efficiencies at higher boiler pressures and lower condenser pressures, steam is usually 4 after expanding partially in the high-pressure turbine. This is done by extracting the steam after partial expansion in the high-pressure turbine, sending it back to the boiler where it is pressure, and returning it to the low-pressure turbine for complete expansion to _5___________at 6 the condenser pressure. 7 Another way of increasing the thermal efficiency of the Rankine cycle is 8 During a process, liquid water (feedwater) leaving the pump is heated by steam bled off the turbine at some intermediate pressure in devices called feedwater heaters. The production of more than one useful form of energy (such as process heat and electric power) from the same energy source is called 9 The overall thermal efficiency of a power plant can be increased by using a 10 11 is the gas-steam combined cycle where a gas-turbine cycle operates at the high-temperature range and a steam-turbine cycle at the low-temperature range. Steam is heated by the high-temperature exhaust gases leaving the gas turbine. thermal efficiency than the steam- or gas-turbine cycles operating alone. have a 13 The most common 12
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