Three Articles Request.
Originally Posted by Amrit Agarwal
Regards,
Amrit T. Agarwal
Consulting Engineer
Pneumatic Conveying Consulting Services
Email: polypcc@aol.com
Ph and Fax: 304 346 5125
Dear Mr.Agarwal,
We are department of company Energo-proekt which involver designing of such an interesting part of the conveying systems which is pneumatic conveying systems.
We have read a lot of comments from all of the world engineers about "Theory and "Design of Pneumatic Conveying Systems", "Debottlenecking Pneumatic Conveying Systems" and "Product Quality in Pneumatic Conveying" and in order to wide our view in this field we ask you give us opportunity to read and give our comments regarding this article.
A lot of authors reffer to your article as an origin.
Thank in advance,
Vladymir. ■
Three Articles Request.
Originally Posted by Amrit AgarwalRegards,
Amrit T. Agarwal
Consulting Engineer
Pneumatic Conveying Consulting Services
Email: polypcc@aol.com
Ph and Fax: 304 346 5125
Dear Mr.Agarwal,
We are department of company Energo-proekt which involver designing of such an interesting part of the conveying systems which is pneumatic conveying systems.
We have read a lot of comments from all of the world engineers about "Theory and "Design of Pneumatic Conveying Systems", "Debottlenecking Pneumatic Conveying Systems" and "Product Quality in Pneumatic Conveying" and in order to wide our view in this field we ask you give us opportunity to read and give our comments regarding this article.
A lot of authors reffer to your article as an origin.
Thank in advance,
Vladymir. ■
Reply To Sven Ludwig
Sven,
Thanks very much for your comments and questions on my article. My responses to these are given below:
1. The calculation method given in the article is correct. There are a few “typos”, i.e., mistakes that were made by the publisher in the process of printing. But most people who are conversant with Excel and the calculation method given in the article should be able to easily spot them out.
2. One mistake is in the equation for the Fanning Friction Factor. I will be happy to send the correct equation if you need it.
3. The other mistake is in Worksheet No. 3. Row Nos. 11 to 14 should all be moved up by one row.
4. The pipe line friction factor used in the sample calculations is for internally shot-peened pipe. This factor is 0.0005, not 0.00015.
5. All of the units used in the equations are correct. You may change them if you prefer any other units.
6. Calculation method is applicable to dilute phase only, up to the minimum pressure point. For calculations to be correct, solids velocity must be higher than the saltation velocity.
7. Please send your data that shows a relationship between the Solids Friction Factor and Solids Velocity. Information that I have does not show that there is this relationship.
8. Regarding putting limits in the calculations for maximum solids to gas ratio, this can be hone but the conveying system should be designed by people who know what they are doing. As regards putting a limit on minimum conveying velocity, this limit is the saltation velocity with an adequate safety factor. This velocity should be calculated using well-known co-relations given in the literature. It varies depending upon thm conveyed material, pipe line diameter, etc. I can send this co-relation to you if you need it.
9. For all practical purposes pressure drop due to the acceleration of gas is so small that it can be ignored, but it can be included in the calculations if someone wants to include it.
10. As regards criteria for stepping up a pipe line, this is another subject. It is not covered in the present article.
11. For bend pressure drop, the method given in the article is empirical but gives fairly correct results. The analytical method that you are thinking of requires accurate data on the effect of solids properties on decrease of solids velocity going through a bend. This complicated relationship can be mathematically derived, but its results may not be much better. This subject however is worth more study.
12. At the end you are saying “I have concerns whether the approach is as “easy” to apply to reality as it looks”. I am sure the calculation method given in the article can be converted into a software program to make it easier to use. But for those people who know Excel, I think that this method is quite easy to follow.
Sven, I hope the above responses are sufficient for your questions and comments. If you are not satisfied with these please contact me by email.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Reply To Sven Ludwig
Sven,
Thanks very much for your comments and questions on my article. My responses to these are given below:
1. The calculation method given in the article is correct. There are a few “typos”, i.e., mistakes that were made by the publisher in the process of printing. But most people who are conversant with Excel and the calculation method given in the article should be able to easily spot them out.
2. One mistake is in the equation for the Fanning Friction Factor. I will be happy to send the correct equation if you need it.
3. The other mistake is in Worksheet No. 3. Row Nos. 11 to 14 should all be moved up by one row.
4. The pipe line friction factor used in the sample calculations is for internally shot-peened pipe. This factor is 0.0005, not 0.00015.
5. All of the units used in the equations are correct. You may change them if you prefer any other units.
6. Calculation method is applicable to dilute phase only, up to the minimum pressure point. For calculations to be correct, solids velocity must be higher than the saltation velocity.
7. Please send your data that shows a relationship between the Solids Friction Factor and Solids Velocity. Information that I have does not show that there is this relationship.
8. Regarding putting limits in the calculations for maximum solids to gas ratio, this can be hone but the conveying system should be designed by people who know what they are doing. As regards putting a limit on minimum conveying velocity, this limit is the saltation velocity with an adequate safety factor. This velocity should be calculated using well-known co-relations given in the literature. It varies depending upon thm conveyed material, pipe line diameter, etc. I can send this co-relation to you if you need it.
9. For all practical purposes pressure drop due to the acceleration of gas is so small that it can be ignored, but it can be included in the calculations if someone wants to include it.
10. As regards criteria for stepping up a pipe line, this is another subject. It is not covered in the present article.
11. For bend pressure drop, the method given in the article is empirical but gives fairly correct results. The analytical method that you are thinking of requires accurate data on the effect of solids properties on decrease of solids velocity going through a bend. This complicated relationship can be mathematically derived, but its results may not be much better. This subject however is worth more study.
12. At the end you are saying “I have concerns whether the approach is as “easy” to apply to reality as it looks”. I am sure the calculation method given in the article can be converted into a software program to make it easier to use. But for those people who know Excel, I think that this method is quite easy to follow.
Sven, I hope the above responses are sufficient for your questions and comments. If you are not satisfied with these please contact me by email.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Articles Written By Me
Vladymir,
Please send your request for my articles to the email address given below.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Charleston, WV, USA
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Articles Written By Me
Vladymir,
Please send your request for my articles to the email address given below.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Charleston, WV, USA
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit, Sven,
About the Solids Friction Factor. (Item 7 in your reply)
The Solids Pressure Drop is given as:
Gas pressure Drop * K * SLR
The Gas Pressure Drop is given as:
(4*f*L*gasdensity)/(2*g*D*144) * Gasvelocity^2
Resulting in:
Solids Pressure Drop = (4*f*L*gasdensity)/(2*g*D*144) * Gasvelocity^2 * K * SLR
If you assume a certain relationship between the product velocity and the gas velocity, then there is a relation between the Solids Pressure Drop and velocity * SLR.
In this relation K is considered as a constant for all situations.
However, the Solids Friction Factor (K) represents the magnitude in which energy is lost in collisions, breakage, friction, static electrics, etc.
The factor K must therefore have a velocity component and this component must be the product velocity.
The energy losses in collisions is depending on the number of collisions.
The number of collisions is depending on the SLR (more particle-more collisions) and the turbulence (higher turbulence – more collisions)
By solving a number of existing installations and the observed performance, it is possible to calculate the involved factor K for that product and that performance.
Plotting the found values of K (which are varying) and combining those values in a regression formula gives:
Solids Pressure Drop = function (K * SLR^alpha * Re^beta)
The values “alpha” and “beta” are specific for each product.
In the function are incorporated the product velocity and the gas velocity.
There is no relation with the gas pressure drop.
From this, it can be concluded that the calculation of the Solids Pressure Drop can be done by a simple formula, where the applied factor K covers all the other inaccuracies and omissions and that works under comparable conditions. (If the conditions differ from the usual conditions from which the factor K is derived, then the errors become bigger)
If the Solids Pressure Drop is calculated with a more extensive formula based on the calculation of the influencing factors (SLR, product velocity, gas velocity and Re), the material loss factor can still be a constant, but is always connected to the used formula.
About the Bend Losses. (Item 11 in your reply)
I use the method that is proposed by Sven and even when this method is questionable, there appear differences between long elbows and short elbows.
Moreover, the end velocity after a bend is in the low velocity ranges, where the involved kinetic energy is low, due to the influence of the velocity^2, causing smaller errors.
Have a nice day
Teus ■
Teus
Re: Design Calculations For Pneumatic Conveying
Dear Amrit, Sven,
About the Solids Friction Factor. (Item 7 in your reply)
The Solids Pressure Drop is given as:
Gas pressure Drop * K * SLR
The Gas Pressure Drop is given as:
(4*f*L*gasdensity)/(2*g*D*144) * Gasvelocity^2
Resulting in:
Solids Pressure Drop = (4*f*L*gasdensity)/(2*g*D*144) * Gasvelocity^2 * K * SLR
If you assume a certain relationship between the product velocity and the gas velocity, then there is a relation between the Solids Pressure Drop and velocity * SLR.
In this relation K is considered as a constant for all situations.
However, the Solids Friction Factor (K) represents the magnitude in which energy is lost in collisions, breakage, friction, static electrics, etc.
The factor K must therefore have a velocity component and this component must be the product velocity.
The energy losses in collisions is depending on the number of collisions.
The number of collisions is depending on the SLR (more particle-more collisions) and the turbulence (higher turbulence – more collisions)
By solving a number of existing installations and the observed performance, it is possible to calculate the involved factor K for that product and that performance.
Plotting the found values of K (which are varying) and combining those values in a regression formula gives:
Solids Pressure Drop = function (K * SLR^alpha * Re^beta)
The values “alpha” and “beta” are specific for each product.
In the function are incorporated the product velocity and the gas velocity.
There is no relation with the gas pressure drop.
From this, it can be concluded that the calculation of the Solids Pressure Drop can be done by a simple formula, where the applied factor K covers all the other inaccuracies and omissions and that works under comparable conditions. (If the conditions differ from the usual conditions from which the factor K is derived, then the errors become bigger)
If the Solids Pressure Drop is calculated with a more extensive formula based on the calculation of the influencing factors (SLR, product velocity, gas velocity and Re), the material loss factor can still be a constant, but is always connected to the used formula.
About the Bend Losses. (Item 11 in your reply)
I use the method that is proposed by Sven and even when this method is questionable, there appear differences between long elbows and short elbows.
Moreover, the end velocity after a bend is in the low velocity ranges, where the involved kinetic energy is low, due to the influence of the velocity^2, causing smaller errors.
Have a nice day
Teus ■
Teus
Re: Design Calculations For Pneumatic Conveying
Dear Amrit Agarwal
Like the other bulk-aholics, I will appreciate if you send me your article about
"Theory and Design of Dilute Phase Pneumatic Conveying Systems".
that is mentioned in this thread.
Also could I please receive a copy of your articles;
"Design Guide for Dust Collectors"
"Design Guide for Dust Collectors"
"Improving Rotary Valve Performance"
"Product Quality in Pneumatic Conveying"
"Rizk or Matsumoto saltation velocity co-relations"
That I believe are mentioned throughout this site, they were highly recommended to me by a mentor.
Thank you in advance & best regards,
Best Regards,
Russell ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit Agarwal
Like the other bulk-aholics, I will appreciate if you send me your article about
"Theory and Design of Dilute Phase Pneumatic Conveying Systems".
that is mentioned in this thread.
Also could I please receive a copy of your articles;
"Design Guide for Dust Collectors"
"Design Guide for Dust Collectors"
"Improving Rotary Valve Performance"
"Product Quality in Pneumatic Conveying"
"Rizk or Matsumoto saltation velocity co-relations"
That I believe are mentioned throughout this site, they were highly recommended to me by a mentor.
Thank you in advance & best regards,
Best Regards,
Russell ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit,
Thanks in return for your detailed reply and your reply is "sufficient".
Please allow two more comments:
To Item 2/8
If you believe those formulae are of interest to the forum would you please publish them here?
To Item 10
Your article only briefly mentions the option for a step-up; therefore I wanted to explore some more. Can I entice you to write another article about this subject?
Thanks again and best regards,
Sven ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit,
Thanks in return for your detailed reply and your reply is "sufficient".
Please allow two more comments:
To Item 2/8
If you believe those formulae are of interest to the forum would you please publish them here?
To Item 10
Your article only briefly mentions the option for a step-up; therefore I wanted to explore some more. Can I entice you to write another article about this subject?
Thanks again and best regards,
Sven ■
Re: Design Calculations For Pneumatic Conveying
Dear Sven,
Item 8) Maximum SLR.
The maximum SLR is a limit set by the combination of:
-Conveying length.
-Airflow.
-Maximum pressure.
The maximum density at a certain location in the pipeline (f.i. after a bend, where the material velocity is low) is the bulk density.
Item 8) Minimum conveying velocity.
This subject is related to Item 10): Stepped pipeline.
The gas velocity (and therefore the material velocity) increases along the pipeline, due to the expansion of the conveying air, caused by the pressure drop.
The higher velocities generate higher losses.
The gas velocity increases more than necessary for keeping the particles in suspension.
To compensate for the too high air velocities, the pipeline diameter is increased in size at that location where the diameter step causes a decrease in air velocity, resulting in a sufficient high velocity after the diameter transition to keep the particles in suspension.
The minimum average air velocity is related to the local suspension velocity of the particles and the wall velocity of the conveying air.
Have a nice day
Teus ■
Teus
Re: Design Calculations For Pneumatic Conveying
Dear Sven,
Item 8) Maximum SLR.
The maximum SLR is a limit set by the combination of:
-Conveying length.
-Airflow.
-Maximum pressure.
The maximum density at a certain location in the pipeline (f.i. after a bend, where the material velocity is low) is the bulk density.
Item 8) Minimum conveying velocity.
This subject is related to Item 10): Stepped pipeline.
The gas velocity (and therefore the material velocity) increases along the pipeline, due to the expansion of the conveying air, caused by the pressure drop.
The higher velocities generate higher losses.
The gas velocity increases more than necessary for keeping the particles in suspension.
To compensate for the too high air velocities, the pipeline diameter is increased in size at that location where the diameter step causes a decrease in air velocity, resulting in a sufficient high velocity after the diameter transition to keep the particles in suspension.
The minimum average air velocity is related to the local suspension velocity of the particles and the wall velocity of the conveying air.
Have a nice day
Teus ■
Teus
Design Calculation For Pneumatic Conveying
Mr. Agarwal - would you please forward a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" article to my email at pardhasaradhigv@gmail.com including the ExCel spreadsheet for calculations?
I have read a lot of appreciation for your Article.
Best regards
pardha ■
Design Calculation For Pneumatic Conveying
Mr. Agarwal - would you please forward a copy of the "Theory and Design of Dilute Phase Pneumatic Conveying Systems" article to my email at pardhasaradhigv@gmail.com including the ExCel spreadsheet for calculations?
I have read a lot of appreciation for your Article.
Best regards
pardha ■
Amrit - Thanks For The Information
Amrit,
I have read the article about pneumatic conveying that you sent to me. The information is very thorough and was very useful to me, thank you.
Ken Postle
Cement Process Consulting Ltd. ■
Amrit - Thanks For The Information
Amrit,
I have read the article about pneumatic conveying that you sent to me. The information is very thorough and was very useful to me, thank you.
Ken Postle
Cement Process Consulting Ltd. ■
Tank You Amrit For The Article
Dear Mrs Amrit,
I am grateful for the article. I have been very useful. Fully understood all the concepts presented in the same.
tank you
Best Regards
Carlos
Originally Posted by caloaaI will appreciate if you send me your article about "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
Thank you in advance,
Best Regards,
Carlos
■
Tank You Amrit For The Article
Dear Mrs Amrit,
I am grateful for the article. I have been very useful. Fully understood all the concepts presented in the same.
tank you
Best Regards
Carlos
Originally Posted by caloaaI will appreciate if you send me your article about "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
Thank you in advance,
Best Regards,
Carlos
■
Thank You
Dear Mr. Agarwal,
Thank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look to see if it will help me in my effort to design a replacement for a very troublesome conveying system. It is great. Since my responibleties require that I be effective in many different disciplines, it is a god sent to find a paper that details much of what I need to know without having to learn 10 to 100 times as much as I need to solve my problem.
Sincerly,
Howard K ■
Thank You
Dear Mr. Agarwal,
Thank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look to see if it will help me in my effort to design a replacement for a very troublesome conveying system. It is great. Since my responibleties require that I be effective in many different disciplines, it is a god sent to find a paper that details much of what I need to know without having to learn 10 to 100 times as much as I need to solve my problem.
Sincerly,
Howard K ■
To, Amit
Sir,
Could you please email me article "theory and design of dilute phase pneumatic conveying system" I am very much interested in learning conveying system design.
email: habeeb040@yahoo.com
Thanks
SYED HABEEB ■
To, Amit
Sir,
Could you please email me article "theory and design of dilute phase pneumatic conveying system" I am very much interested in learning conveying system design.
email: habeeb040@yahoo.com
Thanks
SYED HABEEB ■
Pneumatic Conveying
Hello Every One,
Does anyone have a copy of the excel based spreadsheet for the example calculation in Armit's"Theory and design of dilute phase pneumatic conveying systems" article.
I am trying to copy the example to match the article results and I can not get the same result.
I would like to check my spreadsheet with a correct one to see what I am doing wrong in excel.
kindly send excel spreadsheet to my e-mail address osman040@yahoo.com
Thanks.
syed osman
osman040@yahoo.com ■
Pneumatic Conveying
Hello Every One,
Does anyone have a copy of the excel based spreadsheet for the example calculation in Armit's"Theory and design of dilute phase pneumatic conveying systems" article.
I am trying to copy the example to match the article results and I can not get the same result.
I would like to check my spreadsheet with a correct one to see what I am doing wrong in excel.
kindly send excel spreadsheet to my e-mail address osman040@yahoo.com
Thanks.
syed osman
osman040@yahoo.com ■
Re: Design Calculations For Pneumatic Conveying
Hello osman040,
I had the same problem. Look at the blogs from #352 and onwards and you will find most of the answers.
For corrected equations please contact Amrit. He provided me with the correct ones.
If you still can't manage please contact me through the e-mail provided under my name here.
Regards,
Sven ■
Re: Design Calculations For Pneumatic Conveying
Hello osman040,
I had the same problem. Look at the blogs from #352 and onwards and you will find most of the answers.
For corrected equations please contact Amrit. He provided me with the correct ones.
If you still can't manage please contact me through the e-mail provided under my name here.
Regards,
Sven ■
Thank You
Dear Mr. Agarwal,
Thank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look and it is very thorough and useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise.
Thank you.
Vijay VR
TOR Minerals Int. ■
Thank You
Dear Mr. Agarwal,
Thank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look and it is very thorough and useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise.
Thank you.
Vijay VR
TOR Minerals Int. ■
Re: Design Calculations For Pneumatic Conveying
Originally Posted by vijayvrThank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look and it is very thorough and useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise.
Thank you.
Vijay VR
TOR Minerals Int.
Dear Vijay,
When you state;
“useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise”,
a serious remark must be made.
Understanding and modifying a pneumatic conveying system “without going into detail and time consuming exercise”, is a risky attitude towards the, in theory may be simple but in reality very complex technology.
Start visiting:
Pneumatic conveying, Performance and Calculations:
https://news.bulk-online.com/?p=65
Dense phase- or dilute phase pneumatic conveying:
https://news.bulk-online.com/?p=238
Pneumatic conveying, turbo- or positive displacement air mover:
https://news.bulk-online.com/?p=309
Energy consumption per ton of a pneumatic conveying system:
https://news.bulk-online.com/?p=331
Pneumatic conveying, an unexpected relationship.
https://news.bulk-online.com/?p=445
Pneumatic unloaders: Problems to avoid
https://news.bulk-online.com/?p=74
Influence of electro static charge on pneumatic conveying.
https://news.bulk-online.com/?author=15
These articles may reduce your optimism in achieving easy results and beware you for very likely disappointments and post project discussions.
Take care (meaning: be careful)
Teus ■
Teus
Re: Design Calculations For Pneumatic Conveying
Originally Posted by vijayvrThank you for sending me a copy of your paper "Theory and Design of Dilute Phase Pneumatic Conveying Systems".
I have given your paper a quick look and it is very thorough and useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise.
Thank you.
Vijay VR
TOR Minerals Int.
Dear Vijay,
When you state;
“useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise”,
a serious remark must be made.
Understanding and modifying a pneumatic conveying system “without going into detail and time consuming exercise”, is a risky attitude towards the, in theory may be simple but in reality very complex technology.
Start visiting:
Pneumatic conveying, Performance and Calculations:
https://news.bulk-online.com/?p=65
Dense phase- or dilute phase pneumatic conveying:
https://news.bulk-online.com/?p=238
Pneumatic conveying, turbo- or positive displacement air mover:
https://news.bulk-online.com/?p=309
Energy consumption per ton of a pneumatic conveying system:
https://news.bulk-online.com/?p=331
Pneumatic conveying, an unexpected relationship.
https://news.bulk-online.com/?p=445
Pneumatic unloaders: Problems to avoid
https://news.bulk-online.com/?p=74
Influence of electro static charge on pneumatic conveying.
https://news.bulk-online.com/?author=15
These articles may reduce your optimism in achieving easy results and beware you for very likely disappointments and post project discussions.
Take care (meaning: be careful)
Teus ■
Teus
Recieved Your Article
Dear Mr. Amrit Agarwal
Thank you for your article on "theory and design of dilute phase pneumatic conveying systems". Your article would be very helpful and useful for me.
ansukman ■
Recieved Your Article
Dear Mr. Amrit Agarwal
Thank you for your article on "theory and design of dilute phase pneumatic conveying systems". Your article would be very helpful and useful for me.
ansukman ■
Article
Mr. Agarwal,
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". The theory and calculations presented can be found elsewhere in literature, but the systematic approach to solving for the expected pressure drop using Excel is helpful. ■
Article
Mr. Agarwal,
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". The theory and calculations presented can be found elsewhere in literature, but the systematic approach to solving for the expected pressure drop using Excel is helpful. ■
Design Calculations For Pneumatic Conveying
Dear Amrit,
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". Your article has been an excellent tool for me in better understanding the basics of dilute phase pneumatic conveying design.
While the theory and calculations are presented elsewhere in literature, your approach provides an easy to follow, systematic method to perform the necessary calcs.
Could I also request that you mail me your other articles?
"Debottlenecking Pneumatic Conveying Systems"
"Product Quality in Pneumatic Conveying"
"Theory and Design of Dense Phase Pneumatic Conveying Systems"
Thank you for sharing your knowledge and experience with us.
Regards,
Dave. ■
Design Calculations For Pneumatic Conveying
Dear Amrit,
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". Your article has been an excellent tool for me in better understanding the basics of dilute phase pneumatic conveying design.
While the theory and calculations are presented elsewhere in literature, your approach provides an easy to follow, systematic method to perform the necessary calcs.
Could I also request that you mail me your other articles?
"Debottlenecking Pneumatic Conveying Systems"
"Product Quality in Pneumatic Conveying"
"Theory and Design of Dense Phase Pneumatic Conveying Systems"
Thank you for sharing your knowledge and experience with us.
Regards,
Dave. ■
Articles
Dave,
To get a copy of these articles please send your request to my email address given below.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Charleston, WV, USA
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Articles
Dave,
To get a copy of these articles please send your request to my email address given below.
Regards,
Amrit Agarwal
Consulting Engineer
Pneumatic Conveying Consulting
Charleston, WV, USA
Email: polypcc@aol.com
Ph and Fax: 304 346 5125 ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". I have viewed similar information in publications and elsewhere in literature, but the concise and simplified method using Excel looks very useful. I have not fully completed the excel sheet yet but will very shortly.
regards
Robert ■
Re: Design Calculations For Pneumatic Conveying
Dear Amrit
Thanks for sending your paper entitled "Theory and Design of Dilute Phase Pneumatic Conveying Systems". I have viewed similar information in publications and elsewhere in literature, but the concise and simplified method using Excel looks very useful. I have not fully completed the excel sheet yet but will very shortly.
regards
Robert ■
Re: Design Calculations For Pneumatic Conveying
Dear Teus,
Thank you for all the links. Taking some calculated risk is better than not checking the basics. I wish I could get into the details if time permits but a lot of time this is not possible. I am working on a small modification on our system and there is no large investment involved.
Thank you for the advise.
VJ
When you state;
“useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise”,
a serious remark must be made.
Understanding and modifying a pneumatic conveying system “without going into detail and time consuming exercise”, is a risky attitude towards the, in theory may be simple but in reality very complex technology.
Start visiting:
Pneumatic conveying, Performance and Calculations:
https://news.bulk-online.com/?p=65
Dense phase- or dilute phase pneumatic conveying:
https://news.bulk-online.com/?p=238
Pneumatic conveying, turbo- or positive displacement air mover:
https://news.bulk-online.com/?p=309
Energy consumption per ton of a pneumatic conveying system:
https://news.bulk-online.com/?p=331
Pneumatic conveying, an unexpected relationship.
https://news.bulk-online.com/?p=445
Pneumatic unloaders: Problems to avoid
https://news.bulk-online.com/?p=74
Influence of electro static charge on pneumatic conveying.
https://news.bulk-online.com/?author=15
These articles may reduce your optimism in achieving easy results and beware you for very likely disappointments and post project discussions.
Take care (meaning: be careful)
Teus[/QUOTE] ■
Re: Design Calculations For Pneumatic Conveying
Dear Teus,
Thank you for all the links. Taking some calculated risk is better than not checking the basics. I wish I could get into the details if time permits but a lot of time this is not possible. I am working on a small modification on our system and there is no large investment involved.
Thank you for the advise.
VJ
When you state;
“useful to me for checking the capacity of our existing system as well as system upgrades without going into detail and time consuming exercise”,
a serious remark must be made.
Understanding and modifying a pneumatic conveying system “without going into detail and time consuming exercise”, is a risky attitude towards the, in theory may be simple but in reality very complex technology.
Start visiting:
Pneumatic conveying, Performance and Calculations:
https://news.bulk-online.com/?p=65
Dense phase- or dilute phase pneumatic conveying:
https://news.bulk-online.com/?p=238
Pneumatic conveying, turbo- or positive displacement air mover:
https://news.bulk-online.com/?p=309
Energy consumption per ton of a pneumatic conveying system:
https://news.bulk-online.com/?p=331
Pneumatic conveying, an unexpected relationship.
https://news.bulk-online.com/?p=445
Pneumatic unloaders: Problems to avoid
https://news.bulk-online.com/?p=74
Influence of electro static charge on pneumatic conveying.
https://news.bulk-online.com/?author=15
These articles may reduce your optimism in achieving easy results and beware you for very likely disappointments and post project discussions.
Take care (meaning: be careful)
Teus[/QUOTE] ■
Mr. Amrit Agarwal
Kindly send me your article for pneumatic conveying design.
Thanks
SYED HABEEB
email: habeeb040@gmail.com ■
Mr. Amrit Agarwal
Kindly send me your article for pneumatic conveying design.
Thanks
SYED HABEEB
email: habeeb040@gmail.com ■
Debottle-Necking Conveying
Dear Amrit,
I have just received and read your article on Debottle-necking Conveying Systems.
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.
Having read (re-read ? ? ) your article, I now think I know where the solution came from.
Thanks again for sharing your knowledge.
Dave. ■
Debottle-Necking Conveying
Dear Amrit,
I have just received and read your article on Debottle-necking Conveying Systems.
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.
Having read (re-read ? ? ) your article, I now think I know where the solution came from.
Thanks again for sharing your knowledge.
Dave. ■
Re: Design Calculations For Pneumatic Conveying
Hello Dave,
Now we would like to know where you think the solution came from.
What you did by decreasing the diameter of the first section is in fact increasing the air velocity. (which is in principle the same as increasing the blower volume).
Your solution was smarter, because you increased the pneumatic conveying efficiency.
(A higher rate against the same power, resulting in a lower energy consumption per conveyed ton).
I think that I also know where the solution came from. 
Please share your thoughts on this subject with us.
Best regards
Teus ■
Teus
Re: Design Calculations For Pneumatic Conveying
Hello Dave,
Now we would like to know where you think the solution came from.
What you did by decreasing the diameter of the first section is in fact increasing the air velocity. (which is in principle the same as increasing the blower volume).
Your solution was smarter, because you increased the pneumatic conveying efficiency.
(A higher rate against the same power, resulting in a lower energy consumption per conveyed ton).
I think that I also know where the solution came from.
Please share your thoughts on this subject with us.
Best regards
Teus ■
Teus
Design Calculations for Pneumatic Conveying
My article "Theory and Design of Dilute Phase Pneumatic Conveying Systems" was published this month in
href="https://who.bulk-online.com/profile/2-reinhard-h-wohlbier.html" target="blank">Powder Handling and Processing magazine. This article gives an easy to use Excel-based calculation method for designing new dilute phase pneumatic conveying systems or for improving the performance of existing conveying systems.
Regards,
Amrit T. Agarwal
Consulting Engineer
Pneumatic Conveying Consulting Services
Email:
href="mailto:polypcc@aol.com">polypcc@aol.com
Ph and Fax: 304 346 5125
Picture added by Adinistrator as an example:
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