3 replies to this topic

[chemiboy11]

I want to solve this problem of a drying operation.
How do I plot a drying rate curve?
the file below contains the details:

 drying rate.xlsx   11.91KB   48 downloads

[kkala]

Attached "drying.xls" can hopefully help, since it is not easy to explain procedure in words.

Attached Files

•  drying.xls   38.5KB   45 downloads

[chemiboy11]

well this is how I did it.
 sir Q numericals.xlsx   15.59KB   34 downloads

But I am confused with weather the moisture content be on dry basis or on wet basis for the graphical representation as well as for the calculation of the drying time?
please elaborate.

Regards.

Edited by chemiboy11, 04 October 2011 - 01:35 PM.

[kkala]

Work on the "sir Q numericals.xlsx" seems satisfactory to my understanding, some comments are included in the attached "dryingR0.xls".
You should use dry weight basis on all treatments / graphs of data. In this way you avoid confusion too. Good info on the subject can be found in "Solids drying fundamentals", Chapter of "Psychrometry, Evaporative Cooling, and Solids Drying" in Perry's "Chemical Enginner's handbook". It is Chapter 12 in the 7th edition (1999).

Attached Files

•  dryingR0.xls   38KB   44 downloads