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In order to determine the quality of wet steam, by a separating and throttling calorimeter, the steam should be throttled such that the final state is
- a)saturated vapour only
- b)superheated vapour only
- c)at a pressure lower than the original pressure
- d)a mixture of saturated liquid and saturated vapour
Correct answer is option 'B'. Can you explain this answer?
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In order to determine the quality of wet steam, by a separating and th...
Answer:
Introduction:
A separating and throttling calorimeter is used to determine the quality of wet steam. Wet steam is a mixture of saturated liquid and saturated vapour, and it is necessary to separate the two in order to determine the quality of the steam.
Throttling:
Throttling is the process of reducing the pressure of a fluid by passing it through a narrow passage. When wet steam is throttled, its pressure and temperature are reduced. The reduction in pressure causes the liquid and vapour to separate, and the vapour expands and becomes superheated.
Final state:
The final state of the steam after throttling should be superheated vapour only. This is because the separating and throttling calorimeter is designed to measure the quality of dry steam, which is superheated. If the steam is still wet after throttling, it will not give an accurate measurement of its quality.
Saturated vapour only:
If the final state of the steam is saturated vapour only, it means that the steam was not throttled enough and still contains some liquid. This will give an inaccurate measurement of the steam's quality.
At a pressure lower than the original pressure:
Reducing the pressure of the steam is necessary for separating the liquid and vapour, but the final pressure should not be lower than the original pressure. This is because the separating and throttling calorimeter is designed to measure steam at a specific pressure, and a lower pressure will result in inaccurate measurements.
Conclusion:
In order to determine the quality of wet steam by a separating and throttling calorimeter, the steam should be throttled such that the final state is superheated vapour only. This will ensure that accurate measurements of the steam's quality can be obtained.
Introduction:
A separating and throttling calorimeter is used to determine the quality of wet steam. Wet steam is a mixture of saturated liquid and saturated vapour, and it is necessary to separate the two in order to determine the quality of the steam.
Throttling:
Throttling is the process of reducing the pressure of a fluid by passing it through a narrow passage. When wet steam is throttled, its pressure and temperature are reduced. The reduction in pressure causes the liquid and vapour to separate, and the vapour expands and becomes superheated.
Final state:
The final state of the steam after throttling should be superheated vapour only. This is because the separating and throttling calorimeter is designed to measure the quality of dry steam, which is superheated. If the steam is still wet after throttling, it will not give an accurate measurement of its quality.
Saturated vapour only:
If the final state of the steam is saturated vapour only, it means that the steam was not throttled enough and still contains some liquid. This will give an inaccurate measurement of the steam's quality.
At a pressure lower than the original pressure:
Reducing the pressure of the steam is necessary for separating the liquid and vapour, but the final pressure should not be lower than the original pressure. This is because the separating and throttling calorimeter is designed to measure steam at a specific pressure, and a lower pressure will result in inaccurate measurements.
Conclusion:
In order to determine the quality of wet steam by a separating and throttling calorimeter, the steam should be throttled such that the final state is superheated vapour only. This will ensure that accurate measurements of the steam's quality can be obtained.
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In order to determine the quality of wet steam, by a separating and throttling calorimeter, the steam should be throttled such that the final state isa)saturated vapour onlyb)superheated vapour onlyc)at a pressure lower than the original pressured)a mixture of saturated liquid and saturated vapourCorrect answer is option 'B'. Can you explain this answer?
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