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Identify the wrong statement with respect to boiling heat transfer?
- a)The steam boilers employing natural convection have steam raised through pool boiling
- b)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquid
- c)Leiden-frost effect refers to the phenomenon of stable film boiling
- d)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitation
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
Identify the wrong statement with respect to boiling heat transfer?a)T...
For boiling to occur, the heated surface must be exposed to a liquid and maintained at a temperature higher than the saturation temperature of the liquid.
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Identify the wrong statement with respect to boiling heat transfer?a)T...
Understanding Boiling Heat Transfer
Boiling heat transfer is a vital concept in thermal engineering, particularly in applications like steam boilers and heat exchangers. Let's analyze why option 'B' is the incorrect statement.
Explanation of Option B
- Boiling does not occur when a heated surface is maintained at a temperature lower than the saturation temperature of the liquid.
- Instead, boiling requires that the heated surface is at or above the saturation temperature of the liquid for the phase change to occur.
- If the surface temperature is below the saturation temperature, the liquid will not vaporize, and therefore, boiling cannot take place.
Details on Other Options
- Option A: Steam boilers utilizing natural convection indeed have steam generated through pool boiling, where the liquid contacts a heated surface and forms bubbles that rise.
- Option C: The Leidenfrost effect describes a situation where a liquid produces a stable vapor layer, leading to film boiling rather than nucleate boiling. This is a well-established phenomenon in heat transfer.
- Option D: Nucleate boiling is characterized by the formation of vapor bubbles at nucleation sites on the heated surface, which enhances heat transfer due to liquid agitation.
Conclusion
In summary, the incorrect statement is option 'B' because boiling necessitates that the heated surface temperature exceeds the saturation temperature of the liquid to facilitate the phase change from liquid to vapor.
Boiling heat transfer is a vital concept in thermal engineering, particularly in applications like steam boilers and heat exchangers. Let's analyze why option 'B' is the incorrect statement.
Explanation of Option B
- Boiling does not occur when a heated surface is maintained at a temperature lower than the saturation temperature of the liquid.
- Instead, boiling requires that the heated surface is at or above the saturation temperature of the liquid for the phase change to occur.
- If the surface temperature is below the saturation temperature, the liquid will not vaporize, and therefore, boiling cannot take place.
Details on Other Options
- Option A: Steam boilers utilizing natural convection indeed have steam generated through pool boiling, where the liquid contacts a heated surface and forms bubbles that rise.
- Option C: The Leidenfrost effect describes a situation where a liquid produces a stable vapor layer, leading to film boiling rather than nucleate boiling. This is a well-established phenomenon in heat transfer.
- Option D: Nucleate boiling is characterized by the formation of vapor bubbles at nucleation sites on the heated surface, which enhances heat transfer due to liquid agitation.
Conclusion
In summary, the incorrect statement is option 'B' because boiling necessitates that the heated surface temperature exceeds the saturation temperature of the liquid to facilitate the phase change from liquid to vapor.
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Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer?
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Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer?.
Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering.
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Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Identify the wrong statement with respect to boiling heat transfer?a)The steam boilers employing natural convection have steam raised through pool boilingb)Boiling occurs when a heated surface is exposed to a liquid and maintained at a temperature lower than the saturation temperature of the liquidc)Leiden-frost effect refers to the phenomenon of stable film boilingd)The nucleation boiling is characterized by the formation of bubbles at the nucleation sites and the resulting liquid agitationCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Chemical Engineering tests.
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