#Fluid extractor for car ennigh oil free
The following is an outline of technologies that can remove water from oil, together with their relative advantages and disadvantages.Īs already mentioned, free water in the system will settle to the bottom of the tank (assuming the specific gravity of water is greater than the lubricant). Which technology is most effective will depend on the target dryness level required, the volume of water that must be removed, the base oil (mineral, synthetic, etc.) and the required flow and processing rate. Open barrels should also be protected with desiccant-style filters, particularly in humid storage areas, to prevent water build up and oil degradation.Ī number of methods or technologies, from inexpensive gravity separation to complex vacuum dehydration, exist to remove water. Even indoors, this means they should be sheltered against process water sprays, fire sprinkler tests and general cleaning sprays. Drums and tanks should be sheltered from the environment. Measures to minimize water ingress should start in the oil store. Root cause corrective measures are necessary to resolve or limit water ingression.īasic measures to address water ingression include the use of desiccating breathers, improved seal technology and training maintenance and operations personnel to avoid direct contact with wash down water on shaft seals and breathers. Merely replacing the oil will not cure the ingress source. If significant water ingress has occurred over a prolonged period, detailed oil analysis, such as rust and corrosion inhibition characteristics, remaining useful life measurements, demulsibility and foam suppression and tendency may also be necessary to determine the oil’s suitability for further use. Whatever the source, immediate attention is required to remove it. Water ingression is either insidious as a result of atmospheric humidity levels or immediate as in water jet washing or sudden seal failure. Comparison of Water-Removing Technologies
#Fluid extractor for car ennigh oil generator
Water encourages rust and corrosion and will cause increased wear as a result of aeration, changes in viscosity resulting in film strength failure, hydrogen blistering and embrittlement, and vaporous cavitation.įinally, water is a generator of other contaminants in the oil such as waxes, suspensions, carbon and oxide insolubles and even micro-organisms.Ĭlick Here to See Table 1. Water can also affect the additive package through water washing and hydrolysis, leading to acids and additive depletion.
Why is water considered an evil? Water will affect the oil’s base stock, encouraging oxidation, viscosity increase and foaming. Likewise, highly additized oils, like crankcase oils, have a higher saturation point than lightly additized oils like turbine oils, because the additives - many of which are polar - also hold the water in solution. This is due to polar by-products of oxidation in the oil, which act as “hooks” holding on to the water molecules and keeping them in solution. Similarly, the older the oil, the higher the level of water that can be dissolved. This is the same as being able to dissolve more sugar in hot water, than in cold water. The higher the temperature, the higher the saturation point and hence more water held in solution, in the dissolved phase. The saturation point is dependent on the oil’s temperature, age and additive composition. The point at which an oil contains the maximum amount of dissolved water is termed the saturation point. Because water is typically heavier than oil, it settles below the oil, at the bottom of sumps and reservoirs. When sufficient water exists, or when the oil has adequate demulsibility, free water will collect. However, once the saturation point is exceeded, water is typically present in the emulsified phase creating a milkiness or fog in the oil, just like moist air on a cool day. Just like water present in the air, it cannot be seen in oil, which may appear clear and bright.
It starts off in the dissolved phase - dispersed molecule-by-molecule throughout the oil.
Water co-exists in oil in essentially the same way it co-exists in the atmosphere. Unless you live in an arid region, it is a fundamental fact of life. Water is ever present in the environment.
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