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Nucleate Boiling- Boiler


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#1 krishna106738

krishna106738

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Posted 08 August 2019 - 09:29 PM

Hi Team,
As I understood that for good heat transfer to occur we have to design boilers on basis of nucleate boiling regime.In general for nucleate boiling delta T is between 10-30 C .My question is it possible to have nucleate boiling at higher delta such as 180-200 C also.

#2 breizh

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Posted 09 August 2019 - 12:16 AM

hi,

Let you consider this resource .

Good luck.

Breizh



#3 krishna106738

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Posted 16 August 2019 - 01:42 AM

Hi Briezh,

Thanks lot for sharing the articles, which tells about operational issue involved when we move away from Nucleate boiling region for reboilers.

 

 

I have question regarding power plant oil/gas fired thermosiphon boiler,in which to we can see there will be high delta between hot side and cold side.So how do we have to manage the nucleate boiling delta T in those cases.

 

Thanks

Krishna



#4 krishna106738

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Posted 18 August 2019 - 05:58 AM

Hi Breizh, 

Is there any articles or source where i can clarify or learn about this particular cases.

 

 

Thanks

Krishna



#5 breizh

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Posted 18 August 2019 - 06:16 AM

Hi,

I cannot offer more . You may use the search engine in this forum and check for Thermosyphon . 

If the Delta T is big , you may  vaporize the liquid with the consequences on the material (deterioration)

Good luck .

Breizh


Edited by breizh, 18 August 2019 - 06:20 AM.


#6 krishna106738

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Posted 18 August 2019 - 12:03 PM

Thank Breizh



#7 breizh

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Posted 19 August 2019 - 10:54 PM

Hi ,

Consider the document attached , extract of Process heat transfer from D.Q Kern .

Breizh






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