Chapter hvac engineering Fundamentals: Part 1 Introduction

273
Figur
e
8.57
Double-duct
two-fan
air
-handling
system..
Design Procedures: Part 6
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274
Chapter Eight
Figure 8.58
Double-duct VAV mixing box.
The hot damper continues to close and is fully closed when the cold
damper is 40 percent open. The cold damper can continue on to fully
open, if required, with a corresponding increase in air volume.
When variable volume is used, the outside and return air dampers
must be controlled to maintain minimum flows as described in Sec.
8.5.1.
Design Procedures: Part 6
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Copyright © 2004 The McGraw-Hill Companies. All rights reserved.
Any use is subject to the Terms of Use as given at the website.

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