LearnChemE and CRE Videos

Explanation of the Ergun equation:
http://www.youtube.com/watch?v=onJ_bSjBxX0
Comments: Good explanation of each term in the Ergun Equation. Uses the S.I. form (i.e., gc = 1) of the Ergun Equation. To convert equation in video to equation 5-22 in book, replace υ = ρ0υ0/ρ and G = ρ0υ0/AC. Also change the second term 1.75 ρν/AC = 1.75G
CSTR Design Example (using Damköhler Number):
http://www.youtube.com/watch?v=Eu4sx_mTttc
Comments: Excellent example similar to California Example Problems where one needs to make an intermediate calculation to find what happens when the flow rate is increased.
PFR Design Example (using Damköhler Number):
http://www.youtube.com/watch?v=Xv1tcwIQ1Jw
Comments: Elementary gas phase reaction A + B -> C
Using an intermediate calculation has 50% conversion to find the volume of a second reactor where conversion is 75%. Might be easier to use integrated form of in terms of symbols given by Equation (A-7) on page 649 (see below), then to replace symbols by numerical values.
Reactors in Series: First-Order Reaction
http://www.youtube.com/watch?v=ieT-pE89PV4
Comments: Everything in the first part of the video is fine, but you need to pay careful attention to the last 1 to 2 minutes. The terms rate1 and rate2 have units of (moles/time) which is not the way "rate", -rA, is defined in the text, i.e. (mol/time/volume). You might want to work through using the nomenclature in the text.