ASTM-E779 2003

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E779-03 Standard Test Method for Determining Air Leakage Rate by Fan Pressurization

Published By	Publication Date	Number of Pages
ASTM	2003	11

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Categories: 91.140.30 - Ventilation and air-conditioning systems, ASTM

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Description

1.1 This test method covers a standardized technique for measuring air-leakage rates through a building envelope under controlled pressurization and de-pressurization.

1.2 This test method is applicable to small temperature differentials and low-wind pressure conditions. For tests conducted in the field, it must be recognized that field conditions may be less than ideal. Nevertheless, strong winds and large indoor-outdoor temperature differentials should be avoided.

1.3 This test method is intended to produce a measure of air tightness of a building envelope. This test method does not measure air leakage rates under normal conditions of weather and building operation. To measure air-change rate directly, use the tracer gas dilution method (see Test Method E 741).

1.4 This test method is intended for the measurement of the airtightness of building envelopes of single-zone buildings. For the purpose of this test method, many multi-zone buildings can be treated as single-zone buildings by opening interior doors or by inducing equal pressures in adjacent zones.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements see Section 7.

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology Summary of Test Method
2	Significance and Use Apparatus Hazards Procedure TABLE 1
3	Data Analysis and Calculations FIG. 1
4	Report FIG. 2
5	Precision and Bias Keywords X1. DEPENDENCE OF AIR DENSITY AND VISCOSITY ON TEMPERATURE AND BAROMETRIC PRESSURE (ELEVATION) X1.1 X2. Recommended Procedure For Estimating Errors In Derived Quantities X2.1
6	X3. EXAMPLE CALCULATIONS X3.1 Introduction X3.2 Site Data X3.3 Checking Test Limits X3.4 Pressurization Data TABLE X2.1
7	TABLE X3.1 TABLE X3.2 TABLE X3.3
8	X3.5 Depressurization Data TABLE X3.4 TABLE X3.5
9	X3.6 Combined Pressurization and Depression Data TABLE X3.6 TABLE X3.7
10	X3.7 Estimates of Confidence Limits

Additional information

Standard Title	E779-03 Standard Test Method for Determining Air Leakage Rate by Fan Pressurization
Published Code	ASTM
Publication Date	2003
Pages Count	11
ICS Codes	91.140.30 - Ventilation and air-conditioning systems

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ASTM-E779 2003

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