Nitrate Filter

  • We are currently upgrading MFK. thanks! -neo
Gotch ya. Thanks.

Wouldn't "head" also be described in as pressure? Since head pressure is in direct relation with the head height. It would just be another way of describing it. .75 psi of head vs 20 inches of head, they equal the same.
 
No because then you won't really have an audience that understands you. The people that are trying to learn are going to be confused all that much more, and the people that should know what you are talking about aren't going to be sure you know what you are really trying to say (they will be confused too).

Case in point, that earlier post where you had a large force but called it pressure. That tells me that several things could have happened. The full pump flow could have been directed through the container, there could have been partial flow going through it but there was a blockage in the tube leading out, etc. If you had said .5 psi or static pressure was bowing the lid, I would have known that the material was just too thin.

That's also why me an Dr. Joe couldn't make heads or tails of your sump calculator. You knew what you wanted to convey so your descriptions and calculations made sense to you, but we couldn't understand what you were trying to say or calculate.

In engineering school & the higher math and science classes, there is such high emphasis on the units that if you get the units wrong or omit them, you may as well have not done the problem. The reasons for that is so you can keep figures straight, and also so your work is usable in the future. Other people will rely on your work so it will have to be understandable. Also if you have to refer to your work six months or six years later, you will need to be able to know what you meant when you wrote it.
 
Ok so 99.99% of that post does not fit in this thread. I found possibly 6 words that fit. Thanks for posting junk once more.

This is about the nitrate filter, not other subjects and especially not about the sump calculator, nor is it about you or Dr Joe . So don't steer this thread in another direction, thank you very much!

If a mod could be so generous to remove Chompers last post and this one that would be great.

My last post was asking a question and not trying to say you were wrong.
 
Case in point, that earlier post where you had a large force but called it pressure. That tells me that several things could have happened. The full pump flow could have been directed through the container, there could have been partial flow going through it but there was a blockage in the tube leading out, etc. If you had said .5 psi or static pressure was bowing the lid, I would have known that the material was just too thin.
Click to expand...

You must not have read my post correctly
Here you can see the barbed nozzels pointing outward as the cover is "bowing" because of the head pressure alone.
Click to expand...

Pressure = Force / Area

Pressure = PSI
Force = Pounds
Area = In this case, Sq/In Surface Area of the Cover

So .5 PSI is the pressure where 13 pounds is the force and 25 sqaure inches is the area. You just didn't understand it for some reason.

The Head Pressure Alone - This is the .5 PSI which breaks down to around 13 pounds of force (using correct terminology). I never said anything about the "flow" causing the bow or the pressure from the filter. I said Head Pressure alone. Maybe I should have reversed it and said, pressure head, would that make the difference? I also never said the pressure was dynamic.
 
Jgray152;2902356; said:
Ok so 99.99% of that post does not fit in this thread. I found possibly 6 words that fit. Thanks for posting junk once more.

This is about the nitrate filter, not other subjects and especially not about the sump calculator, nor is it about you or Dr Joe . So don't steer this thread in another direction, thank you very much!

If a mod could be so generous to remove Chompers last post and this one that would be great.

My last post was asking a question and not trying to say you were wrong.
Click to expand...
Holy crap dude. :chillpill: Talk about instability.

I've tried to be nice when others wouldn't, and this is what I get? I wasn't trying to dig up old bones, it was relevant information. If you can't learn from it, so be it. I'm now joining the ranks of those who don't care anymore. It is about to get much more lonely in here.

Unsubscribing.
 
A blind man could have seen this coming. This is not about pressure, psi, forces or any of that. It is about a nitrate filter. And if all the hot headedness was left out it may have been a useful thread. You do not have to be a scientist or a engineer to build a nitrate filter. So talking about all the forces and such is unneeded. And only makes you sound cocky and stupid at the same time. Because if and when you are wrong there will be 10 people to point that mistake out. Basically if it has nothing to do with a filter then leave it out and the thread is better.
 
So typical, somebody tries to help and once you don't like the information given you blowup and start asking for their posts to be deleted!

I'm glad that I stayed out of this thread till it happened on its own, that proves that I wasn't the one causing the problems in your other threads.

General rule of thumb is that if you have a problem with 1 person then it might not be you, have a problem with 2... still might not be you... have a problem with the last 4-5 that have tried to help you... IT'S YOU! ... Just food for thought Jay, Your ideas are welcome and there are obviously people that will help you on here (a few will need convincing now) but you have to be able to take the good with the bad and understand that your not always going to hear exactly what you want.

Anyway :popcorn: Good luck!
 
I did ask a question and was very open to the answer but he never gave me a reason as to WHY you can't say Head Pressure.

Instead he brings up other subjects not in relation to this thread.

And the "force" I found interesting to me. Its a stupid container from walmart so if it can handle 18 pounds of force, thats pretty good to me.

Holy crap dude. :chillpill: Talk about instability.

I've tried to be nice when others wouldn't, and this is what I get? I wasn't trying to dig up old bones, it was relevant information. If you can't learn from it, so be it. I'm now joining the ranks of those who don't care anymore. It is about to get much more lonely in here.

Unsubscribing.
Click to expand...

No, the information you posted was not relevent and you were digging up old bones. You never answered my question and instead you were only talking about why people wouldn't understand what I am saying but never gave a reason why.

MOD, Clean the thread please this is all junk.

If any of you want to steer this thread in the wrong direction after you know its against the TOS, PM me instead!
 
Jay, Seriously

Since you want a definition of the term Head Pressure

Head pressure (Δp): The difference in pressure between the inlet and outlet of a column measured in pounds per square inch. Governed by the following approximate equation for a column packed with spherical particles of typical internal porosity (0.5): Δp = 3000Lη/tMdp 2, where L is the column length in centimeters, η is the mobile-phase viscosity in centipoise, tM the column holdup time in minutes, and dp is the particle diameter in micrometers. Pressure can be expressed in pounds per square inch, bars, atmospheres, or pascals.
 
why change terms that have been in use for ever...i agree with chompers...
 
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