If you know basic Excel, you can use my calculation method published in Powder Handling and Processing magazine in its April 2005 issue. This article gives the theory and all of the equations that are internally used in computer programs. It takes the mystery out of the computer programs. I can send a free PDF copy if you need one.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting Services

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Amrit,

Many thanks for the article. I am sure that others will also find it very useful.

Regards,

Michael Reid. ■

Make contact with Dr V K Agarwal at the ITMMEC Centre at the IIT in New Delhi - vagarwal@itmmec.iitd.ernet.in

Grade of fly ash is very imporant here. He is currently conveying fly ash in his laboratory in New Delhi. ■

Dear Amrit

may I have a copy of your article?

---------"If you know basic Excel, you can use my calculation method published in Powder Handling and Processing magazine in its April 2005 issue. This article gives the theory and all of the equations that are internally used in computer programs. It takes the mystery out of the computer programs."---------------

I found it may help me achieve my goals in this research field. This would make a really positive contribution to my work. I would like to be able to read the full text of this article.

Thank you for your kind consideration of this request.

best regards

■

my email : jcgjcg168@163.com

■

Dear Mr Agarwal,

I would be very grateful if you sent me the article.

My e-mail is: j.elizalde@ingesoa.com ■

Dear Mr. Elizalde,

As requested I have sent to you a copy of this article. Hope it will be useful to you in understanding how pneumatic conveying systems are designed and calculated.

Regards,

Amrit Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Mr Agarwal,

Thank you for your article, it is very useful. ■

Dear Rajendra,

As requested a copy of my article "Theory and Design of Pneumatic Cconveying Systems" published in the April 2005 issue of Powder Handling and Processing has been sent to you. I hope that this article will help you in understanding how pneumatic conveying systems are designed using Excel.

Another of my articles that was published as the feature article in Chemical Engineering "Debottlenecking Pneumatic Conveying Systems" in its May 2004 issue combined with the above article will tell you almost all you would need to know about pneumatic conveying theory and design principles.

Regards,

Amrit Agarwal

Pneumatic Conveying Consulting

Emailolypcc@aol.com

Ph and Fax: 304 346 5125 ■

If you are truly interested in learning about the principles of pneumatic conveying and how various factors can influence a system design and more importantly, how they can affect system performance, the most complete set of information is availble through Powder and Bulk Engineering.

Their web site is www.powderbulk.com.

You should request copies of the Pneumatic Points to Ponder articles which have been a regular feature in the magazine for nearly 17 years.

Our firm, Pneumatic Conveying Consultants and more specifically our Lead Consultant, Paul Solt, has presented information which covers virtually every aspect of system design, operation, troubleshooting from primarily a PRACTICAL perspective.

These articles along with the reference to the text books published by many of our academic counterparts such as David Mills, George Klinzing and many others would be a superb combination of knowledge and experience.

Regards ■

Dear Jack,

I have very high regards for Dr. George Klinzing and Mr. Paul Solt, both personally as well as professionally. Dr. Klinzing's book "Pneumatic Conveying of Solids" and the publications of Mr. Solt are my reference documents. I hope that my articles will also be useful in understanding the basic design principles of pneumatic conveying and will be helpful in pneumatic conveying systems' calculations using basic Excel.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Rajendra,

I will be glad to help you. Please send this request to me at my email address but after converting your data into FPS units.

All the best

Amrit

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Mr Patel

I do not think there are standard values for the parameters you want.

f.i.

- the solid to air ratio is depending on the pipelength, the applied pipeline and pressure

- the gas velocity is also depending on the applied pressure as this gas velocity is related to the local suspension velocity.

- particle velocity is a result from the gas velocity (at any place in the pipeline) and the product resistence, causing velocity loss and reaccelleration.

- the friction factor is of course depenring of the calculation algorithm.

All parameters at any location and therefore also the end result are interdependent and therefore it is so difficult to get this in a mathematical algorithm.

The algorithm I made is doing that pretty well and is checked, mainly against cement, flyash and alumina and grains and derivatives.

Using the same material factors and formels for the same product in vacuum- as well as in pressure mode

(see also the last thread of kevinjcg)

best regards ■

Dear Mr. Agarwal,

I would be interested in obtaining a copy of your calculation method? It would help out alot for my project.

Thanks!

Paul McLean

email: pamcl@hotmail.com ■

Special thank Mr. Agarwal, I found your article very useful, it syntetise the criterias I need for my work.

I am sure that others will also find it very helpful, as I did.

My best regards,

Manfred Farquez Z. ■

The article was very detailed, yet simple to understand. ■

Paul,

Please send a request to me at my email address given below.

Thanks,

Amrit Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Received and read this article and found it very helpful not only in calculating, but in explaining the concept to others not familiar with dilute phase. Thanks Amrit. ■

Mr. Agarwal's article on calculating system pressure drops with an Excel spreadsheet is very useful. The article explains the basis for the calculations and is straight forward and easy to follow. He is very kind to share it with me.

I recommend it to anyone working with pneumatic systems. It is worth having in your tool box for estimating pneumatic conveying systems.

rwynn ■

Dear Mr. Agarwal,

Many thanks for your article you sent to me. At the first sight, this article, clear and offering practical solution of calculation, will be very helpful to me, in an immediate application.

Best regards,

Serban Maracineanu

Bucharest, Romania ■

Could you send a copy to me? Thank you very much , my email is

yuyonghua@163.com.

I come from Shanghai China. ■

Dear Yu,

To get this article please send me this request by email.

Thanks,

Amrit Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

The discussion in this thread made me attentive to the model calculations to determine the pneumatic conveying pressure drop. In fact, both the model itself and its description are straight forward and clear. Thus it is easy to follow the arguing and the calculations.

The main characteristic of the model is that some important, but difficult-to-determine parameters of pneumatic conveying systems, namely the wall friction of the solids, the air/solids velocity ratio, and the influence of elbows etc. are expressed with rather simple assumptions or need to be determined in experiments. And these assumptions are made in spite of the fact that there are more sophisticated equations are available (e.g. by Muschelknautz and co-workers).

The applicant has to decide whether he wants to be

- sophisticated but with more complex calculations or

- simplified but with the risk of applying it to products/conveyors where the general assumptions are not valid. ■

shri Amrit,

can u send a copy of article published in powder and processing journal in my e mail . ■

Dear KVA,

Please send your request to my email address given above. Thanks.

Amrit agarwal ■

Dear Mr. Amrit T. Agarwal

I found your 2005 article extremely useful. It is a major step to putting the mystery out of the issue.

Please send me also your May 2004 article which you also recommended.

Kind regards

Amit Segev

Technology and R&D manager

Negev Industrial Minerals

POB 1584

Omer 84965

Israel

972-52-4709419 ■

Dear Mr Agarwal,

I've received your articles on Debottlenecking Pneumatic Conveying Systems and on Product Quality in Pneumatic Conveying and I'm reading them with much interest.

They are very comprehensive and complement very well the first one about Dilute Phase Design.

Kind Regards ■

Dear Mr Agarwal:

Thanks for your reply on my request for the article you posted in Jan/Feb issue of Powder Bulk & Processing (Theory & Design of Pneumatic Conveying System.

Roberto Martinez -Buenos Aires - Argentina. ■

Mr Agarwal

I would sincerely like to thank you for your paper on 'Theory and Design of Dilute Phase Pneumatic Conveying Systems'. The paper was very well written and easy to understand. I am now using it to check the design for all the tenders that we have received for our new pneumatic conveying system. Please let me know if you have written any other papers I would certainly want a copy of those also. Once again Thank You.

Best Regards

Terence Ong ■

Alex,

Please send me an email to get this article. My email address is given in this thread.

Thanks,

Amrit Agarwal

Pneumatic Conveying Consulting ■

Dear Mr. Amrit Agarwal,

Many thanks for your article about "Design guide for dust collectors". It gave me a very good idea in the main technical features for the assessment of pulse jet filter proposals. Straightforward information, easily understandable, great contribution for my job!

Thanks also for the article on "Dilute phase pneumatic conveying design guide". I add my gratefulness to all those who have already done it!

Please keep me posted if you plan to write any article on dense phase conveying.

With kind regards,

Eng. Walter Lusiardo ■