Dear Rahul,

The correlation between mass flow and pressure is obvious.

A higher mass flow causes a higher Solids to Air ratio (SLR) and a higher SLR causes a higher pressure drop.

Although this correlation is very much depending on the product properties and (less) depending on the ambient temperature and -pressure.

This correlation is what all the pneumatic conveying experts want to calculate.

best regarrds

teus ■

Rahul,

For this co-relation you may refer to my article "Theory and Design of Dilute Phase Pneumatic Conveying Systems". This article describes in detail how to calculate pressure drop due to the flow of solids in a pneumatic conveying line. If you still have questions, feel free to contact me.

Regards,

Amrit Agarwal

Consulting Engineer

Pneumatic Conveying Consulting

Email: polypcc@aol.com

Ph and Fax: 304 346 5125 ■

Dear Rahul,

You are correct in your assumption that, if the air mass flow is constant (under constant

conditions) and the pressure drop is constant, then the product mass flow rate should also be constant, as long as the product properties for pneumatic conveying are constant.

In other words: If everything is constant, then the monitored value is also constant.

The relation SLR=function (pressure drop) can be calculated with the method, described in the aforementioned article.

Checking the actual performance against the calculations is advised.

Success ■