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 |
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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. |
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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. |
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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. |