Provide an explanation for upvote thank you
2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy
a) causes the turbine’s exit temperature to be lower than if the turbine were reversible. |
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b) causes the turbine’s exit temperature to be higher than if the turbine were reversible. |
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c) causes the turbine’s exit pressure to be lower than if the turbine were reversible. |
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d) causes the turbine’s exit pressure to be higher than if the turbine were reversible. |
3. The amount of entropy generation during a process represents the irreversibilities and is process path-dependent.
True or False
4. An irreversible turbine has a negative change in entropy, which means
a)The entropy generation across the turbine is negative. |
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b) There is heat loss from the turbine to the surrounding. |
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c) There is a negative work output from the turbine |
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d) All of the above are true |
5. Entropy change across a pump used in a certain practical application was found out to have a negative value. Which of the below statement is true?
a) The entropy generation across the pump is negative. |
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b) There is heat loss from the pump to the surrounding. |
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c) There is work output from the pump. |
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d) All of the above are true. |
Provide an explanation for upvote thank you 2. An actual turbine undergoes an adiabatic process generating...
Provide an explanation as well for the following questions. 1 Both energy and entropy can be transferred between a system and surroundings by heat, work, and mass flow True or False 2. An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy a) causes the turbine’s exit temperature to be lower than if the turbine were reversible. b) causes the turbine’s exit temperature to be higher than if the turbine were reversible. c) causes the...
Which statement can be attributed to the 2nd Law of Thermodynamics? a For any real process, energy is conserved. b For any real process, entropy is conserved. c Energy flow has a direction. d Energy has a magnitude. Entropy change across a pump used in a certain practical application was found out to have a negative value. Which of the below statement is true? a The entropy generation across the pump is negative. b There is heat loss from the...
QUESTION 8 An actual turbine undergoes an adiabatic process generating entropy due to irreversibilities. The generated entropy causes the turbine's exit temperature to be lower than if the turbine were reversible. causes the turbine's exit temperature to be higher than if the turbine were reversible. causes the turbine's exit pressure to be lower than if the turbine were reversible. causes the turbine's exit pressure to be higher than if the turbine were reversible.
expain the answer 4. An irreversible turbine has a negative change in entropy, which means a)The entropy generation across the turbine is negative. b) There is heat loss from the turbine to the surrounding. c) There is a negative work output from the turbine d) All of the above are true
Explain the answer as well 5. Entropy change across a pump used in a certain practical application was found out to have a negative value. Which of the below statement is true? a) The entropy generation across the pump is negative. b) There is heat loss from the pump to the surrounding. c) There is work output from the pump. d) All of the above are true.
Air initially at 120 psia and 500*F is expanded by an adiabatic turbine to 15 psia and 200* F. Assuming air can be treated as an ideal gas and has variable specific heat. a) Determine the specific work output of the actual turbine (Btu/lbm). b) Determine the amount of specific entropy generation during the irreversible process (Btu/lbm R). c) Determine the isentropic efficiency of this turbine (%). d) Suppose the turbine now operates as an ideal compressor (reversible and adiabatic)...
Thermodynamics
A steam power plant operates with high pressure oft 4 MPa and hasleel receiving heat from a 700°C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal i.e., reversible) except the turbine which has an efficiency 92% of a reversible, isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as a Rankine cycle. Determine the following quantities in the suggested...
Problem 3. Rankine Cycle (90 points) A steam power plant operates with high pressure of 4 MPa and has a boiler exit at 600°C receiving heat from a 700° C reservoir. The ambient air at 20°C provides cooling to maintain the water/vapor mixture in the condenser at 60°C. All components are ideal (i.e., reversible) except the turbine which has an efficiency 92% ofa reversible isentropic process. Other than the irreversibility of the turbine, the power plant can be considered as...
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