Dear Amrit Agarwal,

Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". the paper has helped in producing the calculation in a well formatted and structured way

Thanks Again

pardha ■

Dear Amrit Agarwal,

Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". the paper has helped in producing the calculation in a well formatted and structured way

Thanks Again

pardha ■

Hi Teus,

Could it have come from reading Amrit's article sometime in my previous life?

Dave. ■

Hi Teus,

Could it have come from reading Amrit's article sometime in my previous life?

Dave. ■

Hi Dave,

The answer is NO

However, I am interested in your findings in this life.

Take care

Teus ■

Hi Dave,

The answer is NO

However, I am interested in your findings in this life.

Take care

Teus ■

Originally Posted by Dave Meyers

...

I once had a situation where rates were restricted.

Vendors were called in and they suggested upgrading the roots blowers. This would have been extremely expensive, as we only wanted to go from 4 tph to around 4,5 tph on each of four systems.

I recalled reading an article suggesting DECREASING the diameter of the first few lengths of conveying pipe. I tried this, on one system, and it worked. Then did the same on the other three.

...

Dave.

Dear Dave,

I think your case is a textbook example for a lot of issue discussed in this forum and others, where saltation velocity, solid/gas ratio and constant product friction factor play an important role.

Do professional ethics and confidentiality allow you to share the details of this case with us here?

I think this could help to shed some light on certain issues and is not just a theoretical case.

Can you, please?

Best regards,

Sven ■

Originally Posted by Dave Meyers

...

I once had a situation where rates were restricted.

Vendors were called in and they suggested upgrading the roots blowers. This would have been extremely expensive, as we only wanted to go from 4 tph to around 4,5 tph on each of four systems.

I recalled reading an article suggesting DECREASING the diameter of the first few lengths of conveying pipe. I tried this, on one system, and it worked. Then did the same on the other three.

...

Dave.

Dear Dave,

I think your case is a textbook example for a lot of issue discussed in this forum and others, where saltation velocity, solid/gas ratio and constant product friction factor play an important role.

Do professional ethics and confidentiality allow you to share the details of this case with us here?

I think this could help to shed some light on certain issues and is not just a theoretical case.

Can you, please?

Best regards,

Sven ■

Hi again Sven,

Always good to hear from you.

Sorry I have not yet replied to your earlier messages.

We had a crash-down on the plant, and attention was there.

Sure thing, I am hoping to get back to South Africa for a few days rest.

The files for the de-bottle-necking are also there.

Will send some information ASAP.

Thanks again for your great support.

Dave. ■

Hi again Sven,

Always good to hear from you.

Sorry I have not yet replied to your earlier messages.

We had a crash-down on the plant, and attention was there.

Sure thing, I am hoping to get back to South Africa for a few days rest.

The files for the de-bottle-necking are also there.

Will send some information ASAP.

Thanks again for your great support.

Dave. ■

Dear Amrit,

Thanks for the quick response in sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems".

After a brief review, a worthy paper and I am looking forward to working this into a usable format.

Best Regards

Chasman1 ■

Dear Amrit,

Thanks for the quick response in sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems".

After a brief review, a worthy paper and I am looking forward to working this into a usable format.

Best Regards

Chasman1 ■

Dear Amrit Agarwal,

Thanks for sending Pneumatic Conveying article papers this is very much helpful in calculation i am preparing the excel sheet after i will contact you directly for further communication

Thanks for your valuable support

syed osman ■

Dear Amrit Agarwal,

Thanks for sending Pneumatic Conveying article papers this is very much helpful in calculation i am preparing the excel sheet after i will contact you directly for further communication

Thanks for your valuable support

syed osman ■

Dear Amrit,

Thank you very much for sending me the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems". The explanation is clear and very educational.

The calculation method to implement in Excel is easy.

Regards,

Fernando D. Garca

Breves S.A.

Argentina ■

Dear Amrit,

Thank you very much for sending me the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems". The explanation is clear and very educational.

The calculation method to implement in Excel is easy.

Regards,

Fernando D. Garca

Breves S.A.

Argentina ■

Dear Amrit

I read your article "Theory and Design of Dilute Phase Pneumatic Conveying Systems", it’s clear and easy to understand. I made the spreadsheet and I found little difference, maybe I have error to create it.

I appreciate your time for to spread your knowledge.

Sincerely

Juan Martinez ■

Dear Amrit

I read your article "Theory and Design of Dilute Phase Pneumatic Conveying Systems", it’s clear and easy to understand. I made the spreadsheet and I found little difference, maybe I have error to create it.

I appreciate your time for to spread your knowledge.

Sincerely

Juan Martinez ■

Thank you Mr. Agarwal for sending me the article on "theory and design of dilute phase pneumatic conveying systems". I found it a practical, hands on approach and I am now trying to compose my own calculation sheet.

I can definitely recommend the article! ■

Thank you Mr. Agarwal for sending me the article on "theory and design of dilute phase pneumatic conveying systems". I found it a practical, hands on approach and I am now trying to compose my own calculation sheet.

I can definitely recommend the article! ■

Hallo Mr. Armit

Could you be so kind and send me copy of your articel on my adress

Thank you very much

Kohout

email: kohout.vaclav@centrum.cz ■

Hallo Mr. Armit

Could you be so kind and send me copy of your articel on my adress

Thank you very much

Kohout

email: kohout.vaclav@centrum.cz ■

Mr. Armit, Thank you for sending me your article. After a quick read, the article seems thorough and comprehensive. I think it will be of value in a project we have coming. ■

Mr. Armit, Thank you for sending me your article. After a quick read, the article seems thorough and comprehensive. I think it will be of value in a project we have coming. ■

Thank you for sending me your Article on Design of Dilute Phase conveying systems. The equations are very helpful in aiding me in redesigning our current Dilute Phase conveying system. ■

Thank you for sending me your Article on Design of Dilute Phase conveying systems. The equations are very helpful in aiding me in redesigning our current Dilute Phase conveying system. ■

Mr. Agarwal

Thank you for sendimg me your article on "Theory and Design of Dilute Phase Pneumatic Conveying Systems" I am using it to redesign several of our conveying lines which are underperforming. ■

Mr. Agarwal

Thank you for sendimg me your article on "Theory and Design of Dilute Phase Pneumatic Conveying Systems" I am using it to redesign several of our conveying lines which are underperforming. ■

Amrit,

Thank you for sending the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems". I am preparing the excel spreadsheet for the same and it looks like it is going to solve my problem.

Harshala ■

Amrit,

Thank you for sending the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems". I am preparing the excel spreadsheet for the same and it looks like it is going to solve my problem.

Harshala ■

Dear Amrit,

May I have a copy of "Theory and Design of Dilute Phase Pneumatic Conveying Systems" for Pneumatic Conveying.

Thanks.

Anjan

Email ID anjan.dey@gmail.com ■

Dear Amrit,

May I have a copy of "Theory and Design of Dilute Phase Pneumatic Conveying Systems" for Pneumatic Conveying.

Thanks.

Anjan

Email ID anjan.dey@gmail.com ■

Mr. Armit

Thank you wery much for a sending the articel. it´s wery useful and helped me solve the problem with a complicated route.

Thank´s a lot

Kohout ■

Mr. Armit

Thank you wery much for a sending the articel. it´s wery useful and helped me solve the problem with a complicated route.

Thank´s a lot

Kohout ■

Mr Amrit

Thank you for sending your article. I found it a practical, hands on approach and I am now trying to compose my own calculation sheet.

Thanks a lot.

Anjan

■

Mr Amrit

Thank you for sending your article. I found it a practical, hands on approach and I am now trying to compose my own calculation sheet.

Thanks a lot.

Anjan

■

I found the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems" of Amrit Agarwal very interesting in order to do some own first evaluations of what there may be to gain by reducing the horisontal distance from the unloading facility to the filter by 25 meters.

I have not started the calculation yet and I do have to do some recalculations due to the fact that we in Europe uses meter, not feet.

Can anyone give me an idea already regarding what there may be to gain by reducing this horisontal distance?

Aslak ■

I found the article "Theory and Design of Dilute Phase Pneumatic Conveying Systems" of Amrit Agarwal very interesting in order to do some own first evaluations of what there may be to gain by reducing the horisontal distance from the unloading facility to the filter by 25 meters.

I have not started the calculation yet and I do have to do some recalculations due to the fact that we in Europe uses meter, not feet.

Can anyone give me an idea already regarding what there may be to gain by reducing this horisontal distance?

Aslak ■

Dear Aslak,

Obviously, you have an unloading installation with a filter receiver.

To answer your question about the influence of shortening the pneumatic conveying distance requires more information. (With the given information, it is only clear that you gain 25 m)

-Vacuum- or pressure mode

-Existing conveying length. 25 m less length at an original conveying length of 100 m has a less influence than 25 m at a 40 m original conveying length.

-Conveyed material

-Temperatures

-Installation altitude

-Existing installation data s.a. pipe geometry, air flow, number of bends, design pressure, etc. Some pressure drops are length independent, s.a. intake pressure drop, filter pressure drop and the pressure drop to lift the conveyed mass of material. If the horizontal length is small in relation to the vertical distance, then a change in horizontal length is of minor influence.

If you can supply the additional information, a more practical estimate can be formulated.

The capacity of a pneumatic conveying installation is normally proportional according 1/Length^alpha.

The problem is that alpha is different for each chosen velocity and pressure drop and material.

Therefore, the approach of calculating before trying is indeed recommendable.

Executing calculations without experience (theoretical, practical and operational) can result in disappointments later on.

I support your remark that Europe uses the SI units (m,kg,sec) and that it would be a great step forward if the whole world joins this approach.

Have nice day

Teus ■

Dear Aslak,

Obviously, you have an unloading installation with a filter receiver.

To answer your question about the influence of shortening the pneumatic conveying distance requires more information. (With the given information, it is only clear that you gain 25 m)

-Vacuum- or pressure mode

-Existing conveying length. 25 m less length at an original conveying length of 100 m has a less influence than 25 m at a 40 m original conveying length.

-Conveyed material

-Temperatures

-Installation altitude

-Existing installation data s.a. pipe geometry, air flow, number of bends, design pressure, etc. Some pressure drops are length independent, s.a. intake pressure drop, filter pressure drop and the pressure drop to lift the conveyed mass of material. If the horizontal length is small in relation to the vertical distance, then a change in horizontal length is of minor influence.

If you can supply the additional information, a more practical estimate can be formulated.

The capacity of a pneumatic conveying installation is normally proportional according 1/Length^alpha.

The problem is that alpha is different for each chosen velocity and pressure drop and material.

Therefore, the approach of calculating before trying is indeed recommendable.

Executing calculations without experience (theoretical, practical and operational) can result in disappointments later on.

I support your remark that Europe uses the SI units (m,kg,sec) and that it would be a great step forward if the whole world joins this approach.

Have nice day

Teus ■

Dear Mr. Agarwal,

Could you please send a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" pdf and spreadsheet to the following address:

pjauff@gmail.com

Many Thanks,

pjauff ■

Dear Mr. Agarwal,

Could you please send a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" pdf and spreadsheet to the following address:

pjauff@gmail.com

Many Thanks,

pjauff ■