Homework 02 - Modeling

Homework 02 - Modeling - Chemical Engineering Department...

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Chemical Engineering Department University of Florida ECH 4323 Process Control Theory HOMEWORK No. 2 — MODELING CHEMICAL ENGINEERING SYSTEMS 1.0 Derive an expression for UA for the flow configuration shown below, where U is the overall heat transfer coefficient, A is the effective area for heat transfer. The wall is of thickness L and has a thermal conductivity k T . Note : “Derive” means to make use of basic heat-transfer principles, such as the convection equation U = h p A p (T wp – T p ), in order to arrive at the final expression sought. Simply transcribing the final formula for UA from a reference is not acceptable. Hint : See last page of handout entitled “Modeling Physical Systems”. T s Process stream Steam stream T p T ws T wp Solid wall L 2.0 Exercise 2.1. Ignore Degrees-Of-Freedom Analysis Hint : In part (b), eliminate w 3 using the fact that V is constant. 3.0 Exercise 2.8. Hint
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This note was uploaded on 07/14/2011 for the course ECH 4323 taught by Professor Crissale during the Spring '10 term at University of Florida.

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Homework 02 - Modeling - Chemical Engineering Department...

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