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      11-14-2018, 05:52 AM   #25
GuidoK
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Quote:
Originally Posted by IK6SPEED View Post

Regardless, just because a filter meets a certain requirement for filtering, that’s only one piece of the entire SYSTEM.
The degree of filtration is set by the rated standard of the Hepa filter.
You know, that 99.97% from your link, that is a ASTM D2986 spec.
The bosch filter meets the same spec. And as for filtration capacity (litres per minute or ft³/min), I've shown you the graph where the tesla test results are compared to the 2010 mazda stock filter result. There isnt much more to the entire system. The 'System' is a filter and a fan. So there's a filtering degree (in this case ASTM D2986) and a flow rate of air, where you can see in the graph that what the tesla system does in 2min, the system in the old mazda does in 3 min. Thats it.

But I suspect you don't have a technical occupation. You're not a techie.
You dont seem to process this data the way I process it.

Quote:
Put a $75 HEPA unit in your den and use it for a week and then put a $500 High Quality HEPA unit in your den and you can tell night and day differences.
Both have a HEPA rated filter...
Thats because 'HEPA' itself is a loose claim. It doesn't say anything. HEPA is NOT a 'rating'.
It just means "High Efficiency Particulate Air", nothing more nothing less.
Thats why there are independant set specs for it (or ratings how you call it). Thats what you have to look out for. So there is the ASTM D2986 (thats a US spec; that 99.97%, the one both Musk and Bosch claim to) but for example in europe they have a much more elaborate system (EN 1822:2009) where they divide it into 8 seperate classes ranging from E10 (>85%, so much less than the US ASTM D2986 spec) to U17 (> 99.999995%, way more than the US ASTM D2986 spec). (those filters with really really high filtration degree sometimes also are called 'ULPA')

Thats how these specs work.

Quote:
Originally Posted by IK6SPEED View Post
So you stay with you 5 inch or so HEPA filter and blindly believe that the system works as well the Tesla Feature.
I never said it works as well as the Tesla feature. What the tesla feature does in 2 minutes, a normal car can apparantly do in 3 minutes. Just look at the graph.
My point is that Musk claims that that is '100 times better', and you seem to agree.
So either Musk has, with his physics degree, the mathematical insight of a 4 year old, or he is making up all kinds of numbers in order to sell his stuff and get into the media. I gave you links where specialists debunk the things he says on this, and still you seem to fall for it.
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Last edited by GuidoK; 11-14-2018 at 06:13 AM..
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