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Questions and Answers
What type of conditions are fully transient conditions machines or systems more convenient for?
What type of conditions are fully transient conditions machines or systems more convenient for?
- Non-adiabatic conditions (correct)
- Endoreversible conditions
- Irreversible conditions
- Steady state conditions
In the context of exergy efficiency, what has been proved necessary for C.H.P. configurations?
In the context of exergy efficiency, what has been proved necessary for C.H.P. configurations?
- Thermofrigopump efficiency
- Irreversible efficiency
- Exergy efficiency (correct)
- Entropy efficiency
What is the key difference between exergy efficiency of a machine and the corresponding system efficiency?
What is the key difference between exergy efficiency of a machine and the corresponding system efficiency?
- Adiabatic vs. non-adiabatic operation
- Energy consumption
- Temperature dependency
- Efficiency loss in heat transfer (correct)
Which method has been used for comparison that involves cases of adiabatic and non-adiabatic configurations?
Which method has been used for comparison that involves cases of adiabatic and non-adiabatic configurations?
What has been done to the objective function in terms of classical efficiencies?
What has been done to the objective function in terms of classical efficiencies?
What is a significant contribution proposed by the author in terms of extending the classical efficiencies?
What is a significant contribution proposed by the author in terms of extending the classical efficiencies?
What is the general definition of exergy efficiency?
What is the general definition of exergy efficiency?
In which case could the machine exergy efficiency be one?
In which case could the machine exergy efficiency be one?
Which type of system exergy efficiency occurs in both endo and exo reversible cases?
Which type of system exergy efficiency occurs in both endo and exo reversible cases?
What happens to the exergy efficiency when going from machine efficiency to system efficiency?
What happens to the exergy efficiency when going from machine efficiency to system efficiency?
In the context provided, what does 'w + w'' represent?
In the context provided, what does 'w + w'' represent?
What does 'q F' represent in the equations?
What does 'q F' represent in the equations?
What does the exergy efficiency of a machine represent?
What does the exergy efficiency of a machine represent?
Why is optimization theoretically possible in a thermomechanical machine?
Why is optimization theoretically possible in a thermomechanical machine?
How can unitary cost Ci be related to the dimensions of a machine?
How can unitary cost Ci be related to the dimensions of a machine?
What characterizes machine or system performance in the absence of supplementary constraints?
What characterizes machine or system performance in the absence of supplementary constraints?
Why must a constraint be added for reverse cycle machines in optimization?
Why must a constraint be added for reverse cycle machines in optimization?
What does optimization of Eq.(14), (15), or (17) give for reverse cycle machines?
What does optimization of Eq.(14), (15), or (17) give for reverse cycle machines?
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