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I discovered a flaw in my design that was due to my lack of ultrasonic knowledge. The power rating of your transducer is important and must match the viscosity of your fluid to achieve cavitation. That is, the little sound induced bubble reactors that are capable of converting ammonia in solution to hydrazine and therefore reduce your precious metals.

"For acoustic cavitation to occur, a power threshold must be reached. This threshold is 0.5 W / cm² at 20 kHz, for water at atmospheric pressure and of a few W / cm² for organic solvents. The amplitude of the vacuum to be supplied in order to reach the cavitation threshold depends on several parameters: the higher the viscosity of the medium (that is to say the internal cohesion of the liquid), the more difficult it is to obtain cavitation because the particles are more difficult to separate."
https://www.silabtec.com/en/general-principle-the-cavitation/

So from an economic side, you need to determine the minimum power required to induce cavitation in PM and ammonia solution viscosity, as the cost of the inducer is proportional the the power it can handle. The power level required appears to be substantially higher than what the gas flow, fuel level, imaging and range finding sonic transducers in this frequency range are normally capable of. Which is a good thing, you don't want to be transmuting your fuel, but bad for the refiner that wants in situ hydrazine.

<blockquote data-quote="dwtmint" data-source="post: 387955" data-attributes="member: 76504">I discovered a flaw in my design that was due to my lack of ultrasonic knowledge. The power rating of your transducer is important and must match the viscosity of your fluid to achieve cavitation. That is, the little sound induced bubble reactors that are capable of converting ammonia in solution to hydrazine and therefore reduce your precious metals.&quot;For acoustic cavitation to occur, a power threshold must be reached. This threshold is 0.5 W / cm² at 20 kHz, for water at atmospheric pressure and of a few W / cm² for organic solvents. The amplitude of the vacuum to be supplied in order to reach the cavitation threshold depends on several parameters: the higher the viscosity of the medium (that is to say the internal cohesion of the liquid), the more difficult it is to obtain cavitation because the particles are more difficult to separate.&quot;<a href="https://www.silabtec.com/en/general-principle-the-cavitation/" target="_blank">https://www.silabtec.com/en/general-principle-the-cavitation/</a>So from an economic side, you need to determine the minimum power required to induce cavitation in PM and ammonia solution viscosity, as the cost of the inducer is proportional the the power it can handle. The power level required appears to be substantially higher than what the gas flow, fuel level, imaging and range finding sonic transducers in this frequency range are normally capable of. Which is a good thing, you don&#039;t want to be transmuting your fuel, but bad for the refiner that wants in situ hydrazine.</blockquote>

[QUOTE="dwtmint, post: 387955, member: 76504"] I discovered a flaw in my design that was due to my lack of ultrasonic knowledge. The power rating of your transducer is important and must match the viscosity of your fluid to achieve cavitation. That is, the little sound induced bubble reactors that are capable of converting ammonia in solution to hydrazine and therefore reduce your precious metals. "For acoustic cavitation to occur, a power threshold must be reached. This threshold is 0.5 W / cm² at 20 kHz, for water at atmospheric pressure and of a few W / cm² for organic solvents. The amplitude of the vacuum to be supplied in order to reach the cavitation threshold depends on several parameters: the higher the viscosity of the medium (that is to say the internal cohesion of the liquid), the more difficult it is to obtain cavitation because the particles are more difficult to separate." [URL]https://www.silabtec.com/en/general-principle-the-cavitation/[/URL] So from an economic side, you need to determine the minimum power required to induce cavitation in PM and ammonia solution viscosity, as the cost of the inducer is proportional the the power it can handle. The power level required appears to be substantially higher than what the gas flow, fuel level, imaging and range finding sonic transducers in this frequency range are normally capable of. Which is a good thing, you don't want to be transmuting your fuel, but bad for the refiner that wants [I]in situ[/I] hydrazine. [/QUOTE]

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