Oxygen concentrator sound level

[mike]

If you had read the manual, you'd know that it's mostly safety fluff and "press go" information. There's one page on diagnostics and I published the results of that in my first post. There is a continuous mode that should not require demand, but the manual is vague on exactly what that means. Was hoping to get more definitive info from our 16-year veteran fixing them.

Well, that is an unknown. The experimental plan goes something like. Concentric inverted tin cans with water fill. Concentrator displaces the water to fill the apparatus. Put a weight on top to get the desired pressure. Light the torch. It's a tiny torch, so probably don't need much oxygen at all. Just want it hotter.

I figgered $10 for an oxygen concentrator was a low risk impulse purchase. They swore it worked...yeah right... And, maybe I'll need one some day and can have it refurbed.

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[dadiOH]

I hope he saved during the gravy days.

[unit15sta]

Totally understand!!! Your description, although funny- IS SO TRUE! Same dilemma for my mom and her machine. Thinking we need to store it in the basement to simply TOLERATE it in our lives!!!

[Ed Pawlowski]

You can easily run 25 feet of tubing and put the concentration in a different room with the door closed. Even a large walk-in closet with plenty of sace but not a regular closet.

[micky]

Where was the post that this one is an answer to?

[kingon1942]

Have a couple of friends on oxygen. In a bible study or church, their machines are very disturbing to those around them by preventing them from hearing the speaker(s. Certainly don't want to discourage their participation, but would like suggestions on reducing their sound of operation.

[Ed Pawlowski]

Shut them off and let the people pass out. A little CPR after and they will be back to normal

Machines make noise. Deal with it. If they could be made quiet the engineers would have done it so they could brag how quiet they are.

What a bunch of compassionate hypocrites at a bible study. Evidently you never learned anything from it. WWJD?

[rbowman]

Heal them...

[Mike Duffy]

This brings to mind something I've wondered about the past few years.

We can increase efficiency in internal combustion engines by supercharging.

Would it not also increase efficiency by a factor of 5 by eliminating the ~80% inert nitrogen in the intake manifold? For sure, an oxygen concentrator would take away some power, but then superchargers do so as well. They seem to be worth the extra weight as well, all things considered.

[gregz]

A muffler. A blanket, bag, something that does not block any venting. If a vent, a hand sewn vent extension right angle to vent, made out of a quilted cloth.

Greg

[Dean Hoffman]

Set the concentrators in something like a wicker laundry basket or clothes hamper?

[Tim and Jammy Bakker]

Maybe pray they will be healed and no longer dependent on the oxygen concentrator? Or doesn't praying actually work?

[Ed Pawlowski]

What exactly to you think a concentrator does? In concentrates oxygen by eliminating nitrogen. So you are suggesting a concentrator feeds a concentrator?

There are silent portable systems that can go 8 hours on a small tank. Given to Medicare reimbursement to the supplier most are not going to give an additional $3500 in equipment and get nothing back.

There is also liquid tanks but they have to be filled about every 7 days, not at all profitable.

[Mike Duffy]

I'm not clear on your point. I suggest that the air intake for the engine take in straight oxygen instead of air (21% oxygen). If you wanted, you could also compress the oxygen with a supercharger. Is that what you are getting at?

Supercharged or not, with 100% oxygen, for the same size of cylinder you can inject 5 times the amount of fuel. That should give 5 times the horsepower for the same engine weight.

Probably there will be other engineering considerations, like burning holes through the pistons. But it seems an avenue worth exploring. I'm just curious about why nobody has ever tried it.

[trader_4]

AFAIK, they just get more power out of the same size engine by getting more air/fuel mix into the same displacement. But if that's the efficiency effect, ie getting more power from the same size engine, then yes, feeding it pure oxygen should do the same thing. You could put more fuel/air mix in the same space.

[Ed Pawlowski]

OK, misunderstood you. Would be interesting to see. Theoretically you may be right but getting that much oxygen for a sustained time is probably the biggest obstacle to overcome.

[trader_4]

Probably because there is no practical, cost effective way to produce the required oxygen. What would the required flow rate have to be compared to the flow rate from one of those portable O2 units? IDK what you're gaining for common applications, eg powering cars. You'd be getting a smaller engine size in return for space, cost and power taken up by an O2 generator, another system. I guess one place to start would be to see how much O2 one of those portables makes and if you used it to just replace some of the air, how much more power you could get from the same engine. If it's some reasonable amount, then maybe it has merit.

[Ed Pawlowski]

I think you have to carry LOX and have limited range. Could make a hell of a dragster though.

[Ralph Mowery]

They have been injecting nitrous oxide in engines for years. Stock engines can take a small bost and engines with heaver duty parts can take more. As always the problem is storing enough in the car to go for a long distance. The nitro seems to be stable and not flamable before it reaches over 500 deg F and then the oxygen seperates out and you can inject more fuel in the engine for more power.

The concentrators seperates the oxygen in air from the nitrogen. Probably would take a big concentrator to be useful in a car.

[invalid unparseable]

I think size is the problem as the car would need far more oxygen than a human. I can't find the different requirements but it does sound interesting. There are large concentrators. Power for the concentrator would come off the engine.