Row Height...

The Structure column may be removed for faster processing, consistency of row height, and a cleaner appearance in MS Excel. 

The symbology can vary in height and width because any number of rows of information (from 3—90) can be stacked vertically, plus a vaiy-iug amount of data codewords (from 1—30) can make up the length. 

Select a volume V = 19.64 cm of catalyst to be charged both in the regular basket (case A) and in a basket (case B) that is half of the diameter of A. In cases A and B the AP and RPM are kept the same. In Cases A and C the volumetric recycle flow remains the same. In row 1 and 2 on Figure 7.2.1, if the diameter drops to half, the height must increase four times (for constant catalyst volume.) In row 4, L/dp increases four times as well. In row 5, for cases A vs B, if L/dp increases four times, has to drop to one quarter, hence u will be one half to maintain constant AP. In row 6, for u in A and B and flow cross section 1/4, the volumetric flow will be 1/8 and the recycle ratio also 1/8. In row 7, or u four times larger. 

Following Sadler [161] (the details were not included in his work) consider a row model in which all the stems except the outermost are of the same length, h, as shown in Fig. 4.9. A new stem can only be initiated when the outermost stem has reached a height h. A set of flux equations may be written as ... 

The bubbling frequencies measured in this study are much smaller than the 5- 8 Hz measured by Rowe et al. (1979) and the 20 Hz measured by Hsiung and Grace (1978). The difference may be due to the dominant effect of the much larger initial bed heights and jet nozzle sizes in this study. 

Before analysis. It Is necessary to arrange the relevant data In a data matrix which consists of n objects (laboratories, samples, methods, etc.) arranged In rows with p columns of variables (concentrations, peak heights, etc.). The objects are designated with a subscript 1, and the variables are designated with a k. An element In the matrix, Xi , represents the value of variable k for object 1. Columns show the values of the particular variable k over all n objects, and.rows show the values of all p variables for a particular object 1. 

Based upon these observations, Rowe (1977) derived an expression for the average particle circulation time t around a bed in terms of excess gas velocity and bed height at minimum fluidization... 

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