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ASHRAE Guideline 16 2022

ASHRAE Guideline 16 2022

$38.46

ASHRAE Guideline 16-2022 — Selecting Outdoor, Return, and Relief Dampers for Air-Side Economizer Systems

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ASHRAE 2022
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ASHRAE Guideline 16 provides the basis for selecting and sizing control dampers (outdoor, return, and relief) commonly found in constant-air-volume (CAV) and variable-air-volume (VAV) air-handling units (AHU) and systems with air-side economizers.The 2022 revision of Guideline 16 updates references and corrects minor errata.

PDF Catalog

PDF Pages PDF Title
1 ASHRAE Guideline 16-2022
3 CONTENTS
4 FOREWORD
1. PURPOSE
2. SCOPE
2.1 This guideline covers the application of mixed-air control dampers in AHUs and systems that incorporate air-side economizer systems for cooling.
2.2 This guideline addresses the selection of control dampers based on damper characteristics and damper pressure drop.
2.3 This guideline is not intended to cover dampers used elsewhere in heating, ventilating, and air- conditioning (HVAC) systems.
2.4 This guideline does not cover air mixing.
3. DEFINITIONS
3.1 Definitions of most terms used in this guideline can be found in ASHRAE Terminology of Heating, Ventilation, Air Conditioning, & Refrigeration 1.
3.2 Terms used in this guideline that are not found in ASHRAE Terminology of Heating, Ventilation, Air Conditioning, & Refrigeration or that are used differently are defined in this section.
5 4. SYSTEM ARRANGEMENTS
4.1 General
6 4.2 Return Fan System
11 4.3 Relief Fan System
12 4.4 Relief Damper System
5. DAMPER SELECTION RATIONALE
5.1 Arrangement 1 (Figure 1). The relief damper (D-1) is generally the duct or relief louver size. In this case, the a-value is high (5 to 10 range). In order to achieve a linear response, it is necessary to use an opposed-blade damper (Figure 6). A …
5.2 Arrangement 2 (Figure 2) and Arrangement 3 (Figure 3). The return-air damper (D-2) and the economizer outdoor-air damper (D-3) are selected to be parallel-blade dampers so that there is little or no change in pressure drop across the mixing box w…
13 6. REFERENCES
17 INFORMATIVE APPENDIX A: INSTALLATION OF DAMPERS
18 INFORMATIVE APPENDIX B: SENSING BUILDING PRESSURES
19 INFORMATIVE APPENDIX C: EXAMPLE PROBLEM
22 INFORMATIVE APPENDIX: D BIBLIOGRAPHY

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ASHRAE Guideline 16 2022
$38.46