Recovery of compressed air

by Karthik
(Bangalore, India)

One of my customer is using compressed air in his process at 11 Kg/cm2. The process is to inflate the tyres(not tube), & the cycle time is 50 minutes. Afterwards the air is vented to the atmosphere. I would like to advice him to recover the air by a recovery system may be at lower pressure. Is it possible to recover the compressed air at lower pressure ? & how ?


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Bill says...

Hello Karthik.

On a small scale, if your tyre has, for example, 60 PSI in it, and the vessel into which you wish to vent the tyre has atmosphere, then air will flow from the tire to fill the vessel to the stable air pressure between the two.

If that lower pressure air isn't usable (too low a pressure) then the only way I can see reusing it would be to plumb the storage vessel to the intake port of a compressor. With a check valve in the line from the vessel to the intake port, and another in the line that feeds atmosphere to the intake port, then, when your compressor cycled, it would be ingesting already compressed air, and that would have to provide some energy saving.

This is theory on my part, not having done anything like this myself.

Folks, if you know of companies that offer waste compressed air recycling equipment, could you post here?

Thanks,

Bill

Comments for Recovery of compressed air

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May 29, 2011
Recycling Compressed Air
by: Marcelo Cassani

You may find something at www.earsnorthamerica.com/theearsstory.html

I really do not know how many beer did this guy drink.

His theory say thay he can reccle exhaust at 1 bar but you must increase pressure in the system to 7 bar so it is the same to work from 0 to 6.
Have a look and make your own desicions.

Regards,

Marcelo Cassani
Buenos Aires, Argentina

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Bill says...

I am happy to offer up this bit of info without prejudice.

I checked the link, it does provide info about compressed air recycling, you judge if it suits your business air compressor needs.

Cheers,

Bill


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Compressed Air Recovery

by KIRIT

We are using High pressure air 10.5 kg/cm2.

I would like to know about recovery systems for exhaust compressed air.






Bill answers...

Hello Kirit:

There is a real move afoot in the compressed air world to reclaim some of the energy that's wasted when, after the compressed air has done it's work, it's vented to atmosphere through the valve exhaust, and that air is still under pressure.

Therefore, when that compressed air de-pressurizes back to atmosphere in the shop, the energy that was used to compress that air is lost and is still remaining is lost.

There's quite a bit of information about recovering the heat that's generated in compressing air, and using that heat for other purposes.

As to recovering the energy in compressed air, here's some info for you.

Cheers,

Bill

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Exhusted/unused compressed air

Please what system can one put in place to recover exhusted compressed air and reuse?

_______________________
Bill says...

You will have to talk to folks involved with recycling of compressed air for specific details. This is an area where, if the technology is sound, we all can benefit.

I wrote a bit of info about one such system here:

www.about-air-compressors.com/air-recovery-system.html

And there is more info out there.

Another source may be:

www.earsnorthamerica.com

Good luck with gathering your info, and if you have success, maybe you could let us all know?

Cheers,

Bill

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Nov 05, 2011
Air re cycling
by: tim loxston

Hi Bill,

I am currently working on a new manor of re cycling compressed air, if you are interested please contact me.

tim@aztecaerosols.com


Regards


Tim Loxston

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I know how to recycle compressed air and have my own design

by Owen Prince
(Alberta, Canada)

It is possible to recycle over 90% of the compressed air from
and air motor.
__________________
Well Owen, I don't know you so I cannot comment on your expertise. Nor do you include an email address so folks interested in what you have can contact you.

So, good that you can recycle your compressed air.

If you want to divulge the process to folks, add a comment here with your email address, I'll contact you, and will be happy to write up your information to add to this site for dissemnination to all of the thousands of people that visit this site each week.

If you are seeking to earn money for the information, well, then, at least add your email address so folks can contact you directly.

If you are charging for the information, leave me out of the loop, but give folks your contact information so they can reach you directly.

Cheers,

Bill

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