Category Archives: Useful Information Miscellaneous

Servos

We have all heard of servos (short for servomechanism) but exactly what characterizes a “servo” is often a cloudy topic. Most sources are in agreement that the centrifugal ball governor invented by James Watt and used to control the speed … Continue reading

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Is it Viscosity or is it Surface Tension??

Viscosity and surface tension are properties that are often intuitively linked to one another.  Because these properties are of primary importance in cleaning it will be worth the while to understand them a bit better. Surface tension is the property … Continue reading

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“Oil” is oil. Right?

Wrong! I don’t think most of us would consider using motor oil to moisten our dry skin.  By the same token, we wouldn’t use body oil in our car’s engine.  The notion seems to persist in the cleaning industry, however, that oil … Continue reading

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More for Less with Accumulators

As a prolog to the following let me just say, as I may have said before in this blog, that being an engineer is both a blessing and a curse.  A blessing because you intuitively understand how things work (or … Continue reading

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De-Ionized Water – Things I Did(n’t) Know – Part 2

Since DI water quality is critical to many cleaning processes, it is important to understand its behavior.  In too many cases, the quest for numbers results in high costs in the use of DI water.  In short, delivering super-high resistivity water … Continue reading

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De-Ionized Water – Things I Did(n’t) Know – Part 1

De-ionized water is commonly used in both industrial and precision cleaning systems, primarily for rinsing.  De-ionized water is a little like the speed of light or absolute zero in that you can never quite TOTALLY remove all the ions from the water … Continue reading

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Dryer Configurations – Benefits of Upflow?

Drying is almost always the longest step in a cleaning process.  Because of this, anything that will speed up the drying process is of special interest to the process engineer.  Hot air drying is, by far, the most common means … Continue reading

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Sound Physics – Nodes and Antinodes – Part II

When a sound wave encounters an object or discontinuity in the sound conducting medium, at least part of the sound is reflected.  The way the sound reflects depends in large part on the rigidity of the reflecting surface.  If the … Continue reading

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Sound Physics – Nodes and Antinodes – Part I

I’ve made reference in the blog before to the fact that some surfaces are good candidates for ultrasonic cleaning while others are either difficult or impossible to clean.  In general, surfaces that are hard (metal, glass) are easily cleaned using … Continue reading

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Weirs – Four-Sided Overflow

The final type of weir I’ll discuss in this series is the four-sided overflow weir in which liquid overflows all four sides of a process tank. This type of weir is normally found in equipment designed for “precision cleaning” applications … Continue reading

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