Mechanical Engineering Exam > Mechanical Engineering Questions > Which one of the following modes of heat tran...
Start Learning for Free
Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?
- a)Convection
- b)Conduction
- c)Radiation
- d)Conduction and convection
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
Which one of the following modes of heat transfer would take placepred...
Ans. (c) In boiler, the energy from flame is transmitted mainly by radiation to water wall and radiant super heater.
Most Upvoted Answer
Which one of the following modes of heat transfer would take placepred...
Heat transfer from boiler furnace to water wall predominantly occurs through radiation. This is due to the higher temperature of the furnace relative to the water wall, resulting in the emission of thermal radiation.
Explanation:
Radiation is the transfer of energy through electromagnetic waves, which can travel through a vacuum. In a boiler furnace, the combustion of fuel results in high temperatures, typically exceeding 1000°C. These high temperatures cause the emission of thermal radiation, which is absorbed by the cooler surfaces of the water wall. As a result, the water wall heats up, and the water inside it is also heated, resulting in steam generation.
Conduction and convection can also play a role in heat transfer from the furnace to the water wall, but they are less significant compared to radiation. Conduction is the transfer of heat through a material, while convection is the transfer of heat through a fluid (such as air or water) due to the movement of the fluid. In a boiler, conduction can occur between the furnace and the water wall through the metal structure of the boiler. Convection can also occur as the hot gases from the furnace flow over the water wall, transferring heat to the water through convection.
In summary, while all three modes of heat transfer (conduction, convection, and radiation) can occur in a boiler, radiation is the dominant mode of heat transfer from the furnace to the water wall due to the high temperature difference between the two surfaces.
Explanation:
Radiation is the transfer of energy through electromagnetic waves, which can travel through a vacuum. In a boiler furnace, the combustion of fuel results in high temperatures, typically exceeding 1000°C. These high temperatures cause the emission of thermal radiation, which is absorbed by the cooler surfaces of the water wall. As a result, the water wall heats up, and the water inside it is also heated, resulting in steam generation.
Conduction and convection can also play a role in heat transfer from the furnace to the water wall, but they are less significant compared to radiation. Conduction is the transfer of heat through a material, while convection is the transfer of heat through a fluid (such as air or water) due to the movement of the fluid. In a boiler, conduction can occur between the furnace and the water wall through the metal structure of the boiler. Convection can also occur as the hot gases from the furnace flow over the water wall, transferring heat to the water through convection.
In summary, while all three modes of heat transfer (conduction, convection, and radiation) can occur in a boiler, radiation is the dominant mode of heat transfer from the furnace to the water wall due to the high temperature difference between the two surfaces.
Free Test
FREE
| Start Free Test |
Community Answer
Which one of the following modes of heat transfer would take placepred...
All modes of heat transfer would be seen here, but most dominant would be radiation because in radiation the transfer of heat between two surfaces is proportional to {t^(4)boiler furnace temp -t^(4)water temp}. hence this difference would be huge as compared to cond and conv. hence, radiation would b dominant.
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
Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer?
Question Description
Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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 Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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 Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer?.
Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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 Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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 Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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 Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Which one of the following modes of heat transfer would take placepredominantly, from boiler furnace to water wall?a)Convectionb)Conductionc)Radiationd)Conduction and convectionCorrect 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!
within 7 days!
Takes less than 10 seconds to signup