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Full-Text Articles in Engineering
Equilibrium Conditions Of Hydrate-Forming Pickering Emulsions, Radha Ambekar
Equilibrium Conditions Of Hydrate-Forming Pickering Emulsions, Radha Ambekar
Dissertations and Theses
A key factor in hydrate risk management for an oil-governing system is the stability of the emulsified water with gas hydrate formation. The kinetics of formation of cyclopentane hydrates is investigated in a water-in-oil emulsion using differential scanning calorimetry with the effect of surfactant Span 80. In a classical DSC experiment, an emulsion sample is subjected to a regular cooling and heating cycle between temperatures that include freezing and melting of the dispersed droplets. New phase equilibrium data of (cyclopentane hydrate + water 60:40) emulsions, in the concentration range from 0.1 to 2% of Span 80, is determined at atmospheric …
Study Of Air Bubble Injection Into Laminar And Turbulent Water Flow Through An Annular Test Section, Debbrata Das
Study Of Air Bubble Injection Into Laminar And Turbulent Water Flow Through An Annular Test Section, Debbrata Das
Dissertations and Theses
Injection of bubbles into a vertical upward flow of water in an annular flow channel was studied experimentally under laminar and turbulent conditions. In order to measure the size and shape of the bubbles, a flow visualization system was set up in a vertical test section with a high speed video camera. A PIV measurement technique was also used to determine laminar and turbulent velocity profiles in the liquid stream. In this study, an efficient image processing methodology was used to obtain the velocity profiles, bubble size, shapes and trajectory at different Reynolds numbers. The measured velocity profiles matched theoretical …
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
A Study Of The Electrocoalescence On Spherical Droplets In A Flow Focusing Juction Microchannel, Shady A. Habib
Dissertations and Theses
No abstract provided.
Hydrate Formation Using Dowfax Gemini Surfactants, Franchette Viloria
Hydrate Formation Using Dowfax Gemini Surfactants, Franchette Viloria
Dissertations and Theses
"Gas hydrate formation is a stochastic and slow process. However, the use of a small amount of surfactant can speed up the rate of hydrate formation. This work investigates the effect of two Dow surfactants, Dowfax 2A1 and Dowfax C6L, on gas hydrate formation, first by determining the adsorption isotherms via liquid-liquid titration methods, and then investigating the role in methane hydrate formation in a non-stirred batch reactor. Both surfactants have almost similar structure, sharing doubly charged headgroups, but these surfactants express different effects on hydrate formation. 2A1 and C6L both show monolayer formation at around concentration of 1.0 mM; …