Mechanical Engineering Exam > Mechanical Engineering Questions > When wet steam flows through a throttle valve...
Start Learning for Free
When wet steam flows through a throttle valve and remains wet at exit
- a)its temperature and quality increases
- b)its temperature decreases but quality increases
- c)its temperature increases but quality decreases
- d)its temperature and quality decreases
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
When wet steam flows through a throttle valve and remains wet at exit ...
Throttling is a perfect example example of isenthalpic process. So,when wet steam flows through a throttle valve and remains wet at exit,then its temperature decreases,entropy increases and quality of steam(dryness fraction) increases.
View all questions of this test
Most Upvoted Answer
When wet steam flows through a throttle valve and remains wet at exit ...
Throttling of Wet Steam
Throttling of steam refers to the process of reducing the pressure of steam without any external work being done. This process is commonly used in steam turbines and steam engines to extract work from steam. When wet steam flows through a throttle valve, its properties change. Let's look at how the temperature and quality of wet steam change during throttling.
Effect of Throttling on Temperature and Quality of Wet Steam
- Wet steam is a mixture of water droplets and steam vapor. It has a lower temperature and lower quality than dry steam.
- When wet steam flows through a throttle valve, its pressure decreases, and its enthalpy decreases due to the decrease in kinetic and potential energy. This causes the temperature of the steam to decrease.
- However, the water droplets in the wet steam are more massive than the steam vapor. Therefore, they experience less change in enthalpy during throttling. This means that the quality of the steam increases, as the proportion of steam vapor in the mixture increases.
Therefore, the correct answer is option 'B'. The temperature of wet steam decreases during throttling, but its quality increases.
Importance of Understanding Throttling of Wet Steam
Understanding the properties of wet steam during throttling is essential for the efficient operation of steam turbines and engines. When wet steam enters a turbine, the presence of water droplets can cause erosion and damage to the blades. Therefore, it is necessary to remove as much moisture as possible before the steam enters the turbine. Throttling can be used as a method of removing moisture by reducing the pressure of the steam and causing the water droplets to condense. However, this also reduces the temperature and energy of the steam. Therefore, a balance must be struck between removing moisture and maintaining the temperature and energy of the steam.
Throttling of steam refers to the process of reducing the pressure of steam without any external work being done. This process is commonly used in steam turbines and steam engines to extract work from steam. When wet steam flows through a throttle valve, its properties change. Let's look at how the temperature and quality of wet steam change during throttling.
Effect of Throttling on Temperature and Quality of Wet Steam
- Wet steam is a mixture of water droplets and steam vapor. It has a lower temperature and lower quality than dry steam.
- When wet steam flows through a throttle valve, its pressure decreases, and its enthalpy decreases due to the decrease in kinetic and potential energy. This causes the temperature of the steam to decrease.
- However, the water droplets in the wet steam are more massive than the steam vapor. Therefore, they experience less change in enthalpy during throttling. This means that the quality of the steam increases, as the proportion of steam vapor in the mixture increases.
Therefore, the correct answer is option 'B'. The temperature of wet steam decreases during throttling, but its quality increases.
Importance of Understanding Throttling of Wet Steam
Understanding the properties of wet steam during throttling is essential for the efficient operation of steam turbines and engines. When wet steam enters a turbine, the presence of water droplets can cause erosion and damage to the blades. Therefore, it is necessary to remove as much moisture as possible before the steam enters the turbine. Throttling can be used as a method of removing moisture by reducing the pressure of the steam and causing the water droplets to condense. However, this also reduces the temperature and energy of the steam. Therefore, a balance must be struck between removing moisture and maintaining the temperature and energy of the steam.
Attention Mechanical Engineering Students!
To make sure you are not studying endlessly, EduRev has designed Mechanical Engineering study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Mechanical Engineering.
|
Explore Courses for Mechanical Engineering exam
|
|
Similar Mechanical Engineering Doubts
Top Courses for Mechanical EngineeringView all
When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer?
Question Description
When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer?.
When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? for Mechanical Engineering 2024 is part of Mechanical Engineering preparation. The Question and answers have been prepared according to the Mechanical Engineering exam syllabus. Information about When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Mechanical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer?.
Solutions for When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Mechanical Engineering.
Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free.
Here you can find the meaning of When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice When wet steam flows through a throttle valve and remains wet at exit a)its temperature and quality increasesb)its temperature decreases but quality increasesc)its temperature increases but quality decreasesd)its temperature and quality decreasesCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Mechanical Engineering tests.
|
|
Explore Courses for Mechanical Engineering exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup