Elementary Principles 23 - 3.13(cont'd From the plot R =...

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3- 7 3.13 (cont’d) From the plot, = . / min Rm 53 00743 53 01523 055 kg ⇒= + = ± .. . . bg (b) Rotameter Reading Collection Time (min) Collected Volume (cm3) Mass Flow Rate (kg/min) Difference Duplicate (D i ) Mean D i 2 1 297 0.297 2 1 301 0.301 0.004 4 1 454 0.454 4 1 448 0.448 0.006 6 0.5 300 0.600 6 0.5 298 0.596 0.004 0.0104 8 0.5 371 0.742 8 0.5 377 0.754 0.012 10 0.5 440 0.880 10 0.5 453 0.906 0.026 D i = ++++ = 1 5 0004 0 006 0004 0 012 0 026 00104 ..... . kg / min 95% confidence limits : (. . . . 0 610 174 0 610 0018 ±= ± D i ) kg / min kg / min There is roughly a 95% probability that the true flow rate is between 0.592 kg / min
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This note was uploaded on 02/27/2012 for the course CHEMICAL E 312 taught by Professor Cheung during the Fall '11 term at The University of Akron.

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