Effects of airflow and liquid temperature on ammonia mass transfer above an emission surface

Experimental Study on Emission Rate

Li Rong, Peter V. Nielsen, Guoqiang Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

32 Citations (Scopus)

Abstract

The present study performed a series of experiments in a wind tunnel to investigate the impact of velocity, turbulence intensity and liquid-air temperature difference on ammonia emission rates. Decreasing velocity, turbulence intensity and liquid temperature are shown to reduce the ammonia emission rates. The emission rates are more sensitive to the change of velocity at a low velocity compared to change of velocity at a higher velocity range, which corresponds with the conclusion that the boundary layer thickness of velocity increases sharply when velocity is changed from 0.2 m/s to 0.1 m/s. In addition, the emission rates are more sensitive to the change of temperature at a higher temperature than at a lower liquid temperature range. The influence of velocity and liquid-air temperature difference on boundary layer thickness is also analyzed. The relationship between the emission rate and boundary layer thickness is presented.
Original languageEnglish
JournalBioresource Technology
Volume100
Issue number20
Pages (from-to)4654–4661
ISSN0960-8524
DOIs
Publication statusPublished - 24 May 2009

Fingerprint

Ammonia
airflow
mass transfer
Mass transfer
experimental study
ammonia
liquid
Liquids
temperature
Temperature
Boundary layers
boundary layer
Turbulence
air temperature
turbulence
effect
rate
Air
wind tunnel
Wind tunnels

Keywords

  • Ammonia
  • Emission
  • Velocity
  • Temperature
  • Boundary layer

Cite this

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title = "Effects of airflow and liquid temperature on ammonia mass transfer above an emission surface: Experimental Study on Emission Rate",
abstract = "The present study performed a series of experiments in a wind tunnel to investigate the impact of velocity, turbulence intensity and liquid-air temperature difference on ammonia emission rates. Decreasing velocity, turbulence intensity and liquid temperature are shown to reduce the ammonia emission rates. The emission rates are more sensitive to the change of velocity at a low velocity compared to change of velocity at a higher velocity range, which corresponds with the conclusion that the boundary layer thickness of velocity increases sharply when velocity is changed from 0.2 m/s to 0.1 m/s. In addition, the emission rates are more sensitive to the change of temperature at a higher temperature than at a lower liquid temperature range. The influence of velocity and liquid-air temperature difference on boundary layer thickness is also analyzed. The relationship between the emission rate and boundary layer thickness is presented.",
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Effects of airflow and liquid temperature on ammonia mass transfer above an emission surface : Experimental Study on Emission Rate. / Rong, Li; Nielsen, Peter V.; Zhang, Guoqiang.

In: Bioresource Technology, Vol. 100, No. 20, 24.05.2009, p. 4654–4661.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Effects of airflow and liquid temperature on ammonia mass transfer above an emission surface

T2 - Experimental Study on Emission Rate

AU - Rong, Li

AU - Nielsen, Peter V.

AU - Zhang, Guoqiang

PY - 2009/5/24

Y1 - 2009/5/24

N2 - The present study performed a series of experiments in a wind tunnel to investigate the impact of velocity, turbulence intensity and liquid-air temperature difference on ammonia emission rates. Decreasing velocity, turbulence intensity and liquid temperature are shown to reduce the ammonia emission rates. The emission rates are more sensitive to the change of velocity at a low velocity compared to change of velocity at a higher velocity range, which corresponds with the conclusion that the boundary layer thickness of velocity increases sharply when velocity is changed from 0.2 m/s to 0.1 m/s. In addition, the emission rates are more sensitive to the change of temperature at a higher temperature than at a lower liquid temperature range. The influence of velocity and liquid-air temperature difference on boundary layer thickness is also analyzed. The relationship between the emission rate and boundary layer thickness is presented.

AB - The present study performed a series of experiments in a wind tunnel to investigate the impact of velocity, turbulence intensity and liquid-air temperature difference on ammonia emission rates. Decreasing velocity, turbulence intensity and liquid temperature are shown to reduce the ammonia emission rates. The emission rates are more sensitive to the change of velocity at a low velocity compared to change of velocity at a higher velocity range, which corresponds with the conclusion that the boundary layer thickness of velocity increases sharply when velocity is changed from 0.2 m/s to 0.1 m/s. In addition, the emission rates are more sensitive to the change of temperature at a higher temperature than at a lower liquid temperature range. The influence of velocity and liquid-air temperature difference on boundary layer thickness is also analyzed. The relationship between the emission rate and boundary layer thickness is presented.

KW - Ammonia

KW - Emission

KW - Velocity

KW - Temperature

KW - Boundary layer

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DO - 10.1016/j.biortech.2009.05.003

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