Ultrasonic Performance – Ceramic Ring Test
Other than to say that there is no perfect, infallible way, the blog has not addressed assessing ultrasonic performance. In an earlier blog, I did suggest that any of many methods are appropriate to...
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Ultrasonic Performance – Ceramic Ring Test – Post Script
I usually try to make sure I’ve done my research prior to posting a blog. As I was thinking about the post about the ceramic ring test, however, it occurred to me that there are a couple of variables...
View ArticleThe Trouble With Watts
Some time ago I wrote a paper entitled “What is a Watt.” Although this paper seems lost in history (I can not find a copy of it), I can remember the point that I was trying to make when I wrote it....
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Ultrasonic “Shadowing”
We in the ultrasonics industry have long been aware of an effect which is sometimes called “ultrasonic shadowing.” In general, this is what happens when parts being cleaned are positioned in such a...
View ArticleUltrasonics – The Trouble With Watts – Part 2
As discussed in a previous blog, one problem with watts is that watts do not equal energy. Let’s carry that thought a little further again using the vehicle analogy I put forth in the initial blog of...
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A Little About RMS (Root Mean Squared)
Most of us are aware that the power we get from the power line coming into our house or factory comes as alternating current. Basically, the voltage on the “hot” wire as referenced to ground varies,...
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Three Phase Power – Why and How
Three phase power is commonly used where large amounts of electrical power are required. Examples are power transmission lines and large industrial machines which require considerable power. What is...
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Electricity Behind the Walls
Electricity is not something we give considerable attention to in our daily lives. At home or at work (or wherever) there are electrical outlets. We simply plug devices into the outlets and the...
View ArticleCleaning Sintered or Porous Parts
Most surfaces that we encounter in industrial cleaning are relatively smooth and contiguous. We have talked earlier about the difficulties of cleaning blind holes, threads, capillary spaces and other...
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More Isn’t Always Better
Earlier blogs have shown how difficult and deceptive it can be to relate energy consumed to work delivered. In this blog I would like to offer an example of this difficulty as it relates directly to...
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Ultrasonic “Double Boiler”
Maximum ultrasonic performance requires the most efficient transfer of ultrasonic vibrations from the ultrasonic transducers to the liquid in the process tank. This is generally accomplished by...
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Laminar Flow
When a liquid or a gas flows uniformly and without turbulation, the result is called “laminar flow.” The most visual example of laminar flow for most of us are those arching water displays where...
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Venting
The environment in the area of an industrial cleaning system is often not a “healthy” one for personnel or equipment. Caustic and acidic cleaning chemistries rise as mist above cleaning processes...
View ArticleUltrasonic Drying – Not Yet but Possible???
There has been a lot of buzz lately on the internet regarding work at the Oak Ridge National Laboratory to develop a dryer that uses ultrasonics instead of heat to dry things. The major thrust seems...
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Reliability of Plumbing Fittings – Threaded vs. Compression
Wherever there are liquids there are leaks – it’s inevitable. Leaks, of course cost money in downtime and repair of industrial cleaning systems. So, you ask, what is the best defense against leaks....
View ArticleSurface Tension and/or Wettability
A few days ago, I sat down to write what I thought would be a simple explanation of surface tension and how it is measured in the laboratory (a blog which will be published shortly if I can figure all...
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How do you measure surface tension?
In the world of industrial cleaning technology we talk about surface tension a lot! So much so, in fact, that it is hard to enter into any discussion of cleaning without having the subject of surface...
View ArticleExhausting Gasses Produced by the Cleaning Process
In many industrial cleaning processes it is necessary to exhaust emissions that unavoidably result from the cleaning process. The reasons for exhaust can take on a large range - Remove heat that would...
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Heat – Definitions and Concepts
Temperature has been identified as one of the important variables in cleaning – arguably the most important. So I thought it might be worth some time to develop a little understanding of heat – –...
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Heat Conductivity and Convection
Heat conductivity is a measure of the ability of a material to transfer heat within itself. For example, if you heat one end of a short piece of copper wire, the heat is quickly distributed throughout...
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