Dear Agarwal,

Many thanks for the article that you send me, Which is called Theory and Design of Dilute Phase Pneumatic Conveying Systems. It is just what I have been looking for. I find the calculations and theory useful. ■

Dear Mr Agarwal,

Thank you very much for your article you've kindly sent to me.

It is very useful and agrees completly with the calculations I've been making on my work of designing Pneumatic Conveying Systems.

There's only a misprint on tthe example you show. When you speak about "Aluminium, schedule 10 pipe, internally scored" I think you mean "aluminium, schedule 10 pipe, internally scoured".

Am I right?

Once again my many thanks for your excelent article!!!

Regards

Mrio Mendes

Aerulica, Lda

Portugal ■

Mario,

You are almost right. A more commonly used word would be "internally roughened". Let me know if you need specifications for roughening the internal surface of the pipe.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Amrit,

What value is the 'n' in the function of fanning friction factor?

Many thanks ■

Dear Amrit,

Would you be so kind to send me the internal pipe specifications?

Thank you very much.

Mrio Mendes

Aerulica, Lda

Portugal ■

Shenjie,

In the Fanning Friction Factor equation the term "n" stands for natural log. The denominator in the corrected equation for calculating the Fanning Friction Factor is given below:



{Logn [(e/3.7*D) +(7/NRe)**0.9]}**2

I hope it answers your questions.

Regards,

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Emailolypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Amrit,

Now I see all transcription errors are resolved regarding the Fanning factor calculation (there was a 0.9 exponent missing in the article).

Can you please enligthen why there is no pressure loss due to elevation of gas & solids in pipe section #10, as it is the first vertical pipe? Could it be a typing mistake?

Thanks in advance and kind regards,

Walter ■

I am involved with pneumatic conveying and would like to read your published paper on designing of conveying systems . Please email the paper to veen@rediffmail.com. Thanks! ■

Thank you Mr. Agarwal For your prompt replay in sending the article, im sure it will be very helpful in my project,

Jafar- Kuwait ■

Amrit,

Your design analysis in the article was very informative. The methods it describes are readily applicable to real-world design problems.

Thank you so much!

Kyle Kartchner

Design Engineer

The Dennis Group, LLC

kartchner@dennisgrp.com ■

I've just received my copy and it seems that I can half the time I spend using 'pneumatic conveying design guide'. Of course this last reference is much more complete, but in these few pages you can find what you need to start designing dilute phase conveying systems.

Thanks a lot for sharing with us your knowledge Amrit, ■

Armit

Thank you for an article - I was looking for some calculations.

regards

Ziggy Gregory ■

David,

Please send your request to me for the article by an email. You can find my email address from my posts given above.

Regards,

Amrit ■

Thank you very much sir for your article. This is easy to understand and is very useful.

Thanks once again ■

Thank you very much Mr. Amirt for the calculations you sent me, I found it very helpful in my design for the new air conveyor.

Dear sir can you also advice me for caluclating the velocity of transfere for a certain blower in pressure conveyor? in other words, which blower should i select for a given transfer rate?

Thanks agian and agian for your help.

Yours,

Alaa ■

Dear Amrit

may I have a pdf copy of your article?

please send it to my email-box jshoo@163.com?

thank you very much!

Best regards

ShooChiang ■

Dear Shoo-Chiang,

To get a copy of this article please send your request to my email address given below:

Amrit T. Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Emailolypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Mr. Amrit Agarwal,

Thank you very much for sending me the article of " theory and design of dilute phase pneumatic conveying systems", which enlighten me with the right and quick way to calculate the system. I also find that the key point is the so-called friction multiplier K. Your article is also easy to understand. I recommend that people who are interested in pneumatic conveying should not miss it.

Best Regards, ■

Hi Mr. Amrit T. Agarwal,

Thank you for sending a pdf copy of your calculation for pneumatic conveying. It has helped a lot in our design of fine coal dust system.

Oscar ■

Dear Sir,

Thank you very much for the articles on Pneumatics. It has been very useful for my calculation.

I am very very thank ful to Mr. Amrit T. Agarwal for the support.

Satish Sidana ■

Dear Amrit,

I have read your article of "theory and design of dilute phase pneumatic conveying systems"

it's very useful.I'm trying to use it to my work

thank you again. ■

Amrit, thank you for the article. It's really helpful.

warm regards, ■

Dear Mr Agarwal,

I would be very grateful if you can send me the article.

My email: rapeepuaksungnoen@yahoo.com ■

Dear Amrit,

Thank you for sending me article on Pneumatic Conveying System Design. It is very informative and useful.

Regards ■

dear Mr.Amrit

i would like to thank you for the Excel sheet calculation and the article itsself because it gives the basic criteria how to design the conveying system.

regards,

Hasan ■

■

Mr. Amrit Agarwal

Thanks your article is very useful. It very helps to me at this momment when we are checking some systems in our site.

regards, ■

Thanks Mr. Amrit. Your article was very useful.

I’m working in an energy saving project and one of the areas is compressed air.

One of the analysis points is the pneumatic pellets conveying. Actually, we have a VSD compressor (8 bar) that supply air to the instrumentation and automatic processes, but also is used to transport pellets. For this application, the compressed air is regulated with a throttle valve from 8 to 4 bar. A flowmeter and a manometer show that the flow through the conveying pipe is 280m3/h and 3 bar. I think that installing a medium pressure compressor to replace the throttle valve (8-4bar) could save a lot of energy.

The question is, can I make a calculus with the methodology of you article,

I hope you help me.

Carlos Aguirre ■

Thanks Mr. Amrit. Your article was very useful.

I’m working in an energy saving project and one of the areas is compressed air.

One of the analysis points is the pneumatic pellets conveying. Actually, we have a VSD compressor (8 bar) that supply air to the instrumentation and automatic processes, but also is used to transport pellets. For this application, the compressed air is regulated with a throttle valve from 8 to 4 bar. A flowmeter and a manometer show that the flow through the conveying pipe is 280m3/h and 3 bar. I think that installing a medium pressure compressor to replace the throttle valve (8-4bar) could save a lot of energy.

The question is, can I make a calculus with the methodology of you article,

I hope you help me.

Carlos Aguirre ■

Dear Dr.Amrit,

Thanks for the article 'Theory and design of pneumatic conveying systems'. The article is quite exhaustive and has given me an insight into the nuances of pneumatic conveying. Thanks once again.

Since our ultimate objective is to design a spin flash dryer filter cakes, I'd be grateful if the following articles are e-mailed to me:

!.Product quality in pneumatic conveying.

2.Design guide for dust collection

3.Improving rotary valve performance

I'd also be grateful if you could send me any other article(s) that you think will be useful to us.

Regards,

Mohanvishnu ■

Mr. Amrit

Can you please forward a copy of your article regarding pneumatic conveying. If possible, can you also provide a copy of the Excel spreadsheet.

The information will be used in the design verification of a pneumatic conveying system and will be kept confidential.

Thanks,

Brent Wall, P.Eng.

Achieve Engineering Inc.

bwall@achieveeng.ca

tel 204-415-1558 ■