Search results
Results from the WOW.Com Content Network
This means that the oil or water droplets will not coalesce. On their own, hydrophobic surfactants cannot stabilize an emulsion. Although they are attracted to oil, and an oil-in-water emulsion forms, the emulsion will not stay stable for long and will eventually coalesce. [10]
A Ramsden emulsion, sometimes named Pickering emulsion, is an emulsion that is stabilized by solid particles (for example colloidal silica) which adsorb onto the interface between the water and oil phases. Typically, the emulsions are either water-in-oil or oil-in-water emulsions, but other more complex systems such as water-in-water, oil-in ...
First, the lubricating oil in the engine will not adhere properly to the smooth surface, and in the absence of an oil film the resulting friction is increased. Secondly, while breaking in newly installed piston rings, a minute amount of wear must occur between rings and cylinder wall in order to seat the rings properly, and ensure a gas-tight seal.
An internal oil pump is generally more difficult to replace, but that is dependent on the engine design. A wet sump design can be problematic in a racing car, as the large g force pulled by drivers going around corners causes the oil in the pan to slosh, gravitating away from the oil pick-up, briefly starving the system of oil and damaging the ...
Note 2: The average diameter of droplets in macro-emulsion (usually referred to as an“emulsion”) is close to one millimeter (i.e., 10 −3 m). Therefore, since micro- means 10 −6 and emulsion implies that droplets of the dispersed phase have diameters close to 10 −3 m, the micro-emulsion denotes a system with the size range of the ...
A miniemulsion (also known as nanoemulsion) is a particular type of emulsion.A miniemulsion is obtained by ultrasonicating a mixture comprising two immiscible liquid phases (for example, oil and water), one or more surfactants and, possibly, one or more co-surfactants (typical examples are hexadecane or cetyl alcohol).
An automatic lubricator is a device fitted to a steam engine to supply lubricating oil to the cylinders and, sometimes, the bearings and axle box mountings as well. [1] There are various types of automatic lubricator, which include various designs of displacement, hydrostatic and mechanical lubricators.
Overhead gas from the stabilizer passes through a back pressure control valve that maintains the pressure in the stabilizer. [5] The stabilised crude oil, comprising pentane and higher hydrocarbons (C 5 +), is drawn from the base of the stabilizer and is cooled. This may be by heat exchange with the incoming live crude and by cooling water in a ...