Mechanical Engineering Exam > Mechanical Engineering Questions > Consider the following statements:The flow co...
Start Learning for Free
Consider the following statements:
The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:
1. A liquid is evaporating
2. A vapour is condensing
3. Mass flow rate of one of the fluids is far greater
Of these statements:
The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:
1. A liquid is evaporating
2. A vapour is condensing
3. Mass flow rate of one of the fluids is far greater
Of these statements:
- a)1 and 2 are correct
- b)1 and 3 are correct
- c)2 and 3 are correct
- d)1, 2 and 3 are correct
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Consider the following statements:The flow configuration in a heat exc...
Ans. (a) If liquid is evaporating or a vapour is condensing then whether heat
exchanger is counter flow or otherwise is immaterial. Same matters for
liquid/gas flows.
exchanger is counter flow or otherwise is immaterial. Same matters for
liquid/gas flows.
Most Upvoted Answer
Consider the following statements:The flow configuration in a heat exc...
Counter flow and flow configuration in a heat exchanger
A heat exchanger is a device used to transfer heat between two or more fluids. The flow configuration in a heat exchanger refers to the direction in which the hot and cold fluids flow relative to each other. The two main flow configurations are counter flow and parallel flow.
In counter flow, the hot and cold fluids enter the heat exchanger from opposite ends and flow in opposite directions. This configuration allows for maximum temperature difference between the two fluids and therefore maximizes heat transfer efficiency. As the fluids flow in opposite directions, the temperature difference between them decreases along the length of the heat exchanger.
In addition to counter flow, there are other flow configurations such as parallel flow and cross flow. In parallel flow, the hot and cold fluids enter the heat exchanger from the same end and flow in the same direction. In cross flow, the hot and cold fluids enter the heat exchanger from different directions and flow perpendicular to each other.
The flow configuration in a heat exchanger can have a significant impact on its performance and efficiency. However, there are certain scenarios where the flow configuration does not matter. These scenarios include:
1. Evaporation of a liquid: When a liquid is evaporating in a heat exchanger, the flow configuration does not have a significant impact on the heat transfer process. This is because evaporation is primarily driven by the temperature difference between the liquid and the surrounding environment, rather than the flow configuration.
2. Condensation of a vapor: Similar to evaporation, the flow configuration does not matter when a vapor is condensing in a heat exchanger. The condensation process is primarily governed by the temperature difference between the vapor and the surrounding environment, rather than the flow configuration.
3. Large mass flow rate difference: If the mass flow rate of one of the fluids is far greater than the other, the flow configuration becomes less significant. In this case, the fluid with the higher mass flow rate will dominate the heat transfer process, regardless of the flow configuration.
Therefore, in the given statements, option C is correct, which states that statements 2 and 3 are correct. The flow configuration in a heat exchanger does not matter when a vapor is condensing or when there is a large mass flow rate difference between the fluids. However, it is important to note that in most other cases, the flow configuration can have a significant impact on the heat transfer efficiency of a heat exchanger.
Introduction
A heat exchanger is a device used to transfer heat between two or more fluids. The flow configuration in a heat exchanger refers to the direction in which the hot and cold fluids flow relative to each other. The two main flow configurations are counter flow and parallel flow.
Counter flow
In counter flow, the hot and cold fluids enter the heat exchanger from opposite ends and flow in opposite directions. This configuration allows for maximum temperature difference between the two fluids and therefore maximizes heat transfer efficiency. As the fluids flow in opposite directions, the temperature difference between them decreases along the length of the heat exchanger.
Other flow configurations
In addition to counter flow, there are other flow configurations such as parallel flow and cross flow. In parallel flow, the hot and cold fluids enter the heat exchanger from the same end and flow in the same direction. In cross flow, the hot and cold fluids enter the heat exchanger from different directions and flow perpendicular to each other.
Impact of flow configuration
The flow configuration in a heat exchanger can have a significant impact on its performance and efficiency. However, there are certain scenarios where the flow configuration does not matter. These scenarios include:
1. Evaporation of a liquid: When a liquid is evaporating in a heat exchanger, the flow configuration does not have a significant impact on the heat transfer process. This is because evaporation is primarily driven by the temperature difference between the liquid and the surrounding environment, rather than the flow configuration.
2. Condensation of a vapor: Similar to evaporation, the flow configuration does not matter when a vapor is condensing in a heat exchanger. The condensation process is primarily governed by the temperature difference between the vapor and the surrounding environment, rather than the flow configuration.
3. Large mass flow rate difference: If the mass flow rate of one of the fluids is far greater than the other, the flow configuration becomes less significant. In this case, the fluid with the higher mass flow rate will dominate the heat transfer process, regardless of the flow configuration.
Therefore, in the given statements, option C is correct, which states that statements 2 and 3 are correct. The flow configuration in a heat exchanger does not matter when a vapor is condensing or when there is a large mass flow rate difference between the fluids. However, it is important to note that in most other cases, the flow configuration can have a significant impact on the heat transfer efficiency of a heat exchanger.
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
Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer?
Question Description
Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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 Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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 Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer?.
Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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 Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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 Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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 Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider the following statements:The flow configuration in a heat exchanger, whether counter flow or otherwise, will NOT matter if:1. A liquid is evaporating2. A vapour is condensing3. Mass flow rate of one of the fluids is far greaterOf these statements:a)1 and 2 are correctb)1 and 3 are correctc)2 and 3 are correctd)1, 2 and 3 are correctCorrect answer is option 'C'. 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