ASHRAE 120 : 2017
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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METHOD OF TESTING TO DETERMINE FLOW RESISTANCE OF HVAC DUCTS AND FITTINGS
Hardcopy , PDF
01-04-2022
English
01-01-2017
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Foreword
1 Purpose
2 Scope
3 Definitions, Symbols, and Subscripts
4 Compliance Requirements
5 Applicability
6 Instrumentation
7 Flow Measuring Systems and Test Setups
8 Observations and Conduct of Test
9 Calculations
10 Test Results and Report
11 References
Informative Annex A - Time-Weighted Average
Informative Annex B - Leakage Measurement
Informative Annex C - Flexible Duct Test Setup Guide
Informative Annex D - Example Test Systems
Provides uniform methods of laboratory testing of HVAC ducts and fittings to determine their resistance to airflow.
| Committee |
TC 5.2
|
| DocumentType |
Standard
|
| Pages |
56
|
| PublisherName |
American Society of Heating, Refrigerating & Air Conditioning Engineers
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
.1 This standard may be used to determine the change in total pressure resulting from airflow in HVAC ducts and fittings. 2.2 The test results can be used to determine duct flow losses in pressure loss per unit length. Fitting losses are reported as local loss coefficients.2.3 This standard does not cover interpretation of test data.
| ASHRAE HDBK REFRIGERATION : 2014 | ASHRAE HANDBOOK - REFRIGERATION |
| ASHRAE 41.1 : 2013 | STANDARD METHOD FOR TEMPERATURE MEASUREMENT |
| ASHRAE 41.6 : 2014 | METHOD FOR HUMIDITY MEASUREMENT |
| AMCA 210 : 2016 | LABORATORY METHODS OF TESTING FANS FOR CERTIFIED AERODYNAMIC PERFORMANCE RATING |
| ASHRAE 41.3 : 2014 | METHODS FOR PRESSURE MEASUREMENT |
| ISO 5167-1:2003 | Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full Part 1: General principles and requirements |
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