Русская версия English version

Empirical support for cell models of heat and mass transfer in the system «water – water vapour» and desorption of dissolved oxygen in atmospheric deaeration units

G.V. Leduhovsky, V.P. Zhukov

Vestnik IGEU, 2017 issue 3, pp. 5—13

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Abstract in English: 

Background: There are several models of heat and mass transfer in the system «water – water vapour» and desorption of dissolved oxygen in dearation units of different types: jet-type units, non-perforated bubbling plates, flooded bubble devices. For these models to be practically applied, they need empirical support including methods of calculating phase contact area and heat and mass transfer coefficients.

Materials and methods: The area of phase contact in dearation units was calculated by the known methods. The empirical support for the models including heat and mass transfer coefficients was developed based on the results of the conducted experimental studies by the methods of heat and mass transfer similarity theory and mathematical statistics.

Results: By using the data obtained by experimental studies of deaerators of different types, the authors have developed empirical support of cell models of heat and mass transfer processes for water deaeration separately for jet-type units, non-perforated bubbling plates and flooded bubble devices of deaerating tanks including methods of calculating phase contact area and criteria equations for determining heat and mass transfer coefficients.

Conclusions: The developed empirical support of cell models is accurate enough to be used to solve practical problems and makes it possible to conduct computational studies at the stage of dearation unit performance adjustment and design.

Key words: deaeration, jet-type unit, bubble stage, heat and mass transfer, cell model, desorption, similarity theory, regression, mathematical statistics, mathematical modelling.

References in English: 

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Ключевые слова на русском языке: 
деаэрация, струйный отсек, барботажная ступень, тепломассообмен, ячеечная модель, десорбция, теория подобия, регрессия, математическая статистика, математическое моделирование
Ключевые слова на английском языке: 
deaeration, jet-type unit, bubble stage, heat and mass transfer, cell model, desorption, similarity theory, regression, mathematical statistics, mathematical modelling
The DOI index: 
10.17588/2072-2672.2017.3.005-013
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