Hello,
As you probably know, around 2015, ASC started selling IsoThermal Tube Traps. They are reported to perform a lot better, especially with the low end.
Here's a section of their site where they explain how it works in quite a bit of detail.
Quote:
"How do we achieve converting our capacitors into isothermal vessels? We evenly distribute fibers, a single micron in width, through the air cavity of a TubeTrap, spaced a few dozen microns apart.
Such an exposure of surface area provides very rapid, very aggressive thermal action upon the gas molecules, which return to room temperature extremely quickly. This added speed allows the operating frequency of any diameter IsoThermal TubeTrap to be lower than a non-isothermal variety."
My question is - what do they mean by 'we evenly distribute fibres... throughout the air cavity'?
My assumption is they use 1nm fabric, the kind that is used in various filters, and lined the inside of the TubeTrap with it.
Or is there something more complicated going on?
As you probably know, around 2015, ASC started selling IsoThermal Tube Traps. They are reported to perform a lot better, especially with the low end.
Here's a section of their site where they explain how it works in quite a bit of detail.
Quote:
"How do we achieve converting our capacitors into isothermal vessels? We evenly distribute fibers, a single micron in width, through the air cavity of a TubeTrap, spaced a few dozen microns apart.
An externally hosted image should be here but it was not working when we last tested it.
Such an exposure of surface area provides very rapid, very aggressive thermal action upon the gas molecules, which return to room temperature extremely quickly. This added speed allows the operating frequency of any diameter IsoThermal TubeTrap to be lower than a non-isothermal variety."
My question is - what do they mean by 'we evenly distribute fibres... throughout the air cavity'?
My assumption is they use 1nm fabric, the kind that is used in various filters, and lined the inside of the TubeTrap with it.
Or is there something more complicated going on?
Quick and dirty citation from sciencedirect:
"The mechanism of sound absorption mainly involves three physical processes (Zhu et al., 2014). First, when the sound wave is in the porous material, the viscous effect between the solid frame and numerous air cavities will attenuate part of the sound energy and convert it into heat. Second, heat transfer will happen due to temperature distinction between different parts caused by friction, which is an isothermal process. And this process will further dissipate sound energy. Third, the vibration of air in the bulk materials will also lead to the vibration of fibers."
Don't think ASC is doing something different from the rest... isothermal absorption is present in most fibrous absorbing materials. Think they just fill the TubeTrap with mineral wool.
"The mechanism of sound absorption mainly involves three physical processes (Zhu et al., 2014). First, when the sound wave is in the porous material, the viscous effect between the solid frame and numerous air cavities will attenuate part of the sound energy and convert it into heat. Second, heat transfer will happen due to temperature distinction between different parts caused by friction, which is an isothermal process. And this process will further dissipate sound energy. Third, the vibration of air in the bulk materials will also lead to the vibration of fibers."
Don't think ASC is doing something different from the rest... isothermal absorption is present in most fibrous absorbing materials. Think they just fill the TubeTrap with mineral wool.
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