Some Aspects of the Solubility of Gases in Liquids

Fogg, Peter G. T.

doi:10.1007/s00706-002-0580-x

Cited by 8 publications

(15 citation statements)

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“…11a). ( Fogg and Gerrard, 1991) A gas commonly used for absorption rate investigations, carbon dioxide, belongs to this category. It is usually absorbed into different reactive solutions (e.g.…”

Section: Resultsmentioning

confidence: 99%

Contribution of Liquid- and Gas-Side Mass Transfer Coefficients to Overall Mass Transfer Coefficient in Taylor Flow in a Microreactor

Sobieszuk¹,

Ilnicki²,

Pohorecki³

2014

Chemical and Process Engineering

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Gas-liquid microreactors find an increasing range of applications both in production, and for chemical analysis. The most often employed flow regime in these microreactors is Taylor flow. The rate of absorption of gases in liquids depends on gas-side and liquid-side resistances. There are several publications about liquid-side mass transfer coefficients in Taylor flow, but the data about gas-side mass transfer coefficients are practically non existent. We analysed the problem of gas-side mass transfer resistance in Taylor flow and determined conditions, in which it may influence the overall mass transfer rate. Investigations were performed using numerical simulations. The influence of the gas diffusivity, gas viscosity, channel diameter, bubble length and gas bubble velocity has been determined. It was found that in some case the mass transfer resistances in both phases are comparable and the gas-side resistance may be significant. In such cases, neglecting the gas-side coefficient may lead to errors in the experimental data interpretation.

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Section: Resultsmentioning

confidence: 99%

Contribution of Liquid- and Gas-Side Mass Transfer Coefficients to Overall Mass Transfer Coefficient in Taylor Flow in a Microreactor

Sobieszuk¹,

Ilnicki²,

Pohorecki³

2014

Chemical and Process Engineering

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“…Fogg [9] states that the solubility of gases in a liquid is a property of a gas dependent on its partial pressure and on the temperature as well as the nature of the liquid phase. In fact, for most gas-liquid systems there tends to be a linear variation of solubility with the partial pressure as this approaches zero.…”

Section: The Solubility Of Gasses In Liquids and Supersaturated Solutmentioning

confidence: 99%

Experimental analysis of two-phase flow in domestic central heating systems: micro bubble characteristics

Fsadni

Lamers³

2011

Computational Methods in Multiphase Flow VI

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Domestic central heating systems result in micro bubble nucleation and detachment at the boiler wall due to the presence of supersaturated conditions in the system. Such conditions originate due to the widespread use of untreated tap water in such systems and due to the air leakage into the system's closed loop circuit during the daily thermal cycling. The presence of air bubbles in such systems results in a number of undesired effects such as corrosion, blockages, noise and the filling of radiators with air due to the deposit of the micro bubbles in the radiators. As a result, a loss in the heat transfer area of the radiator occurs thus resulting in an inefficient use, consequently increasing the carbon footprint of such widely used systems. Therefore, the capture of micro bubbles at the exit point of the boiler should result in improved system efficiencies. A comprehensive knowledge of the expected bubble production rate and bubble size is important for an efficient deaeration system. To date, no studies have been published on the fundamentals of bubble production and size in wet central heating systems, therefore, the importance of this paper for the building services industry. Experimental results on a test rig incorporating a typical 19 kW (rated) domestic gas fired boiler show typical micro bubble production rates ranging between 0.03 to 0.47 litres of nitrogen gas per hour with a shift in the system heating load. An analysis of the expected bubble diameters was done at different system conditions. Bubbles with average diameters within the range of 0.13 and 0.39 mm were observed. A comparison with Winterton's finite angle force balance model resulted in reasonable predictions.

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“…Isotopic labelling was achieved by using >99% 2 H enriched reagents and >98% 15 N enriched (ND 4 ) 2 SO 4 . Two NMR samples were prepared [1]. Freeze-dried protein was dissolved in 10%/90% H 2 O/D 2 O to ∼2 mM and the pH 1 was adjusted to 4.0.…”

Section: Protein Production and Nmr Sample Preparationmentioning

confidence: 99%

“…• C and 1.013 bar (1 atm) molecular oxygen is soluble to concentrations of about 1.3 mM in water, 11.8 mM in benzene and 45.4 mM in pentane (1). These different solubilities reflect the apolar nature of oxygen and classify it as hydrophobic.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Dissolved Oxygen upon Amide Proton Relaxation and Chemical Shift in a Perdeuterated Protein

Ulmer

Campbell

Boyd

2002

Journal of Magnetic Resonance

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Some Aspects of the Solubility of Gases in Liquids

Cited by 8 publications

References 0 publications

Contribution of Liquid- and Gas-Side Mass Transfer Coefficients to Overall Mass Transfer Coefficient in Taylor Flow in a Microreactor

Contribution of Liquid- and Gas-Side Mass Transfer Coefficients to Overall Mass Transfer Coefficient in Taylor Flow in a Microreactor

Experimental analysis of two-phase flow in domestic central heating systems: micro bubble characteristics

The Effects of Dissolved Oxygen upon Amide Proton Relaxation and Chemical Shift in a Perdeuterated Protein

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