ME405_Lecture_25 - ME 405 Fall 2006 Professor John M....

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ME 405 Fall 2006 Professor John M. Cimbala Lecture 25 11/03/2006 Today, we will : Continue our discussion about hood suction velocities and isopleths Discuss capture velocity and capture of particles in Section 6.1 Do some example problems – capture velocity Do C a n d y Q u e s t i o n s f o r C a n d y F r i d a y Example: Circular inlet without a flange (plain circular inlet: Figure 6.9 Velocity isopleths (curves of constant U/U face , %) and decay of U(x,0)/U face (along the centerline, %) for a plain circular opening (adapted from ASHRAE HVAC Applications Handbook, 1995).
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Example: Circular inlet with a flange (flanged inlet): Figure 6.10 Velocity isopleths (curves of constant U/U face , %) for a flanged circular opening (adapted from ASHRAE HVAC Applications Handbook, 1995).
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Capture velocity, v c : Table 6.1 Capture velocities (abstracted from ACGIH, 2001). characteristics of contaminant emission examples capture velocity (FPM) 1. contaminant enters quiescent air with
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This note was uploaded on 07/23/2008 for the course ME 521 taught by Professor Cimbala during the Fall '07 term at Pennsylvania State University, University Park.

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ME405_Lecture_25 - ME 405 Fall 2006 Professor John M....

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