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ASHRAE Standard 70 2006 RA2021

ASHRAE Standard 70 2006 RA2021

$38.46

ASHRAE Standard 70-2006 (RA 2021) — Method of Testing the Performance of Air Outlets and Air Inlets (ANSI approved)

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ASHRAE 2006
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Standard 70 defines laboratory methods of testing air outlets and air inletsused to terminate ducted and unducted systems for distribution and return of building a

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PDF Pages PDF Title
1 ANSI/ASHRAE Standard 70-2006( RA 2021)
3 CONTENTS
4 FOREWORD
1. PURPOSE
2. SCOPE
2.1 This standard includes the specifications for test instruments, facilities, installations, and procedures and methods of calculation for determining aerodynamic performance and sound generation of air outlets and air inlets.
2.2 The test methods in this standard apply to both isothermal and non-isothermal conditions.
3. DEFINITIONS
7 4. INSTRUMENTATION AND FACILITIES
4.1 Temperature Measurement. Temperature-measuring instruments shall meet the requirements of ANSI/ASHRAE Standard 41.11 and the requirements of Sections 4.1.1 and 4.1.2 below.
4.2 Pressure Measurement. Pressure-measuring instruments shall meet the requirements of ASHRAE Standard 41.32 and the requirements of Sections 4.2.1 through 4.2.4 below.
8 4.3 Airflow Rate Measurement. Airflow rate shall be measured in accordance with ASHRAE Standard 41.2.3 Accuracy shall be no less than ±5.0% of the reading or 1 cfm (0.5 L/s), whichever is greater.
4.4 Air Velocity Measurement. Air velocity measurements shall be made with mechanical or electrical anemometers having an accuracy shown in Table 2 and in accordance with Sections 4.4.1 and 4.4.2.
4.5 Sound Measurement. The equipment and facility for the determination of sound power levels shall be in accordance NAIS Standard 12.51,5 which specifies the instrumentation, acoustic test facilities, and uncertainty of the measurements. Locations w…
5. TEST PROCEDURES
5.1 Air Outlet Static and Total Pressure. The test for outlet static and total pressure shall be conducted in accordance with the following subsections.
9 5.2 Air Inlet Static and Total Pressure. The test for air inlet static and total pressure shall be conducted in accordance with the following subsections.
10 5.3 Area Factor (Ak)
5.4 Throw, Spread, and Drop
12 5.5 Sound Generation
6. REFERENCES
14 INFORMATIVE APPENDXI A: BIBLIOGRAPHY
15 INFORMATIVE APPENDXI B: THROW DATA ANALYSIS AND APPLICATION
17 INFORMATIVE APPENDXI C: ROOM TEST HEATERS
18 INFORMATIVE APPENDXI D: SOUND RATING DETERMINATION

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ASHRAE Standard 70 2006 RA2021
$38.46