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Aerodynamic processes and heat exchange in the furnace of a steam boiler with a secondary emitter.

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Title: Aerodynamic processes and heat exchange in the furnace of a steam boiler with a secondary emitter.
Authors: Redko, Andriy1 (AUTHOR) andriy.ua-mail@ukr.net, Dzhyoiev, Rafael1 (AUTHOR), Davidenko, Anastasiya1 (AUTHOR), Pavlovskaya, Anna1 (AUTHOR), Pavlovskiy, Serhii1 (AUTHOR), Redko, Igor1 (AUTHOR), Kulikova, Nataliia1 (AUTHOR), Redko, Oleksandr1 (AUTHOR)
Source: Alexandria Engineering Journal. Mar2019, Vol. 58 Issue 1, p89-101. 13p.
Subjects: Gas furnaces, Furnaces, Boilers, Flue gases, Steam, Boiler efficiency, Nitrogen oxides
Abstract: Abstract The use of water-tube boilers is common in industrial and municipal boiler houses and they are used as the sources of heat and steam supply. The introduction of measures that ensure environmental performance at an acceptable level, the use of modern burner devices and automation of boilers for worn-out and obsolete boiler designs require a significant amount of reconstruction and significant financial costs. The solution of the problems of burner device modernization, analysis and selection of optimal operating conditions for furnaces and boilers requires the application of modern methods of mathematical modeling. Modern technologies for reducing nitrogen oxides should improve the ecological safety of boilers and increase the efficiency of their operation. The results of a numerical study of heat exchange processes when burning the fossil fuels have shown the efficiency of placing a secondary tubular reversible emitter in the volume of a boiler furnace. It is found that the density of the radiant heat flux increases by 15–20%, the temperature of the flue gases at the outlet from the furnace decreases and amounts to 970 °C. The dimensions of the flame torch exclude its collision with the surfaces of screen tubes. During the combustion of the gas-air mixture, the concentration of nitrogen oxides at the outlet from the boiler furnace does not exceed 125 mg/m3. [ABSTRACT FROM AUTHOR]
Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
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DbLabel: Engineering Source
An: 135771323
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Aerodynamic processes and heat exchange in the furnace of a steam boiler with a secondary emitter.
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  Data: <searchLink fieldCode="AR" term="%22Redko%2C+Andriy%22">Redko, Andriy</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> andriy.ua-mail@ukr.net</i><br /><searchLink fieldCode="AR" term="%22Dzhyoiev%2C+Rafael%22">Dzhyoiev, Rafael</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Davidenko%2C+Anastasiya%22">Davidenko, Anastasiya</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pavlovskaya%2C+Anna%22">Pavlovskaya, Anna</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pavlovskiy%2C+Serhii%22">Pavlovskiy, Serhii</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Redko%2C+Igor%22">Redko, Igor</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kulikova%2C+Nataliia%22">Kulikova, Nataliia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Redko%2C+Oleksandr%22">Redko, Oleksandr</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Alexandria+Engineering+Journal%22">Alexandria Engineering Journal</searchLink>. Mar2019, Vol. 58 Issue 1, p89-101. 13p.
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  Data: <searchLink fieldCode="DE" term="%22Gas+furnaces%22">Gas furnaces</searchLink><br /><searchLink fieldCode="DE" term="%22Furnaces%22">Furnaces</searchLink><br /><searchLink fieldCode="DE" term="%22Boilers%22">Boilers</searchLink><br /><searchLink fieldCode="DE" term="%22Flue+gases%22">Flue gases</searchLink><br /><searchLink fieldCode="DE" term="%22Steam%22">Steam</searchLink><br /><searchLink fieldCode="DE" term="%22Boiler+efficiency%22">Boiler efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Nitrogen+oxides%22">Nitrogen oxides</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract The use of water-tube boilers is common in industrial and municipal boiler houses and they are used as the sources of heat and steam supply. The introduction of measures that ensure environmental performance at an acceptable level, the use of modern burner devices and automation of boilers for worn-out and obsolete boiler designs require a significant amount of reconstruction and significant financial costs. The solution of the problems of burner device modernization, analysis and selection of optimal operating conditions for furnaces and boilers requires the application of modern methods of mathematical modeling. Modern technologies for reducing nitrogen oxides should improve the ecological safety of boilers and increase the efficiency of their operation. The results of a numerical study of heat exchange processes when burning the fossil fuels have shown the efficiency of placing a secondary tubular reversible emitter in the volume of a boiler furnace. It is found that the density of the radiant heat flux increases by 15–20%, the temperature of the flue gases at the outlet from the furnace decreases and amounts to 970 °C. The dimensions of the flame torch exclude its collision with the surfaces of screen tubes. During the combustion of the gas-air mixture, the concentration of nitrogen oxides at the outlet from the boiler furnace does not exceed 125 mg/m3. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Alexandria Engineering Journal is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.aej.2018.12.006
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      – Code: eng
        Text: English
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        PageCount: 13
        StartPage: 89
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      – SubjectFull: Gas furnaces
        Type: general
      – SubjectFull: Furnaces
        Type: general
      – SubjectFull: Boilers
        Type: general
      – SubjectFull: Flue gases
        Type: general
      – SubjectFull: Steam
        Type: general
      – SubjectFull: Boiler efficiency
        Type: general
      – SubjectFull: Nitrogen oxides
        Type: general
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      – TitleFull: Aerodynamic processes and heat exchange in the furnace of a steam boiler with a secondary emitter.
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              M: 03
              Text: Mar2019
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              Y: 2019
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