1.1 本标准测试方法涵盖了一种定量现场测试程序和计算方法，用于使用鼓风机门或等效设备产生的建筑围护结构上的风扇诱导压差来评估空气泄漏率。 1.2 本测试方法中定义了根据适用于测试围护结构漏气的测试边界确定的建筑设置条件。 1.3 本试验方法提供了确定待测试验包层气压边界的程序。 1.4 本试验方法适用于所有多区域和大型建筑类型及其部分或子部分。 1.5 该测试方法定义了三个测试程序:多点回归、重复单点和重复两点漏气率测试。 1.6 该测试方法允许在加压条件、减压条件或两种条件下测试测试包络，并对结果进行平均。 1.7 本试验方法适用于参考压力大于10 Pa（0.04 in.WC）且不大于100 Pa（0.40 in.WC）的空气泄漏率规范。 1.8 本试验方法描述了进行试验的两种建筑准备方法:排除暖通空调相关开口的建筑围护结构，以及包括暖通空调相关开孔的操作围护结构。 1.9 单位-- 以国际单位制表示的值应被视为标准值。SI单位后括号中给出的值仅供参考，不被视为标准值。 1.10 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践，并确定监管限制的适用性。 1.11 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 =====意义和用途====== 5.1 本试验方法不确定气密性要求，但提供了评估是否符合其他地方规定的空气泄漏率的方法。 5.2 本试验方法用于通过测量指定参考压差下的空气泄漏率来确定建筑围护结构或其部分的气密性。 5.3 本试验方法提供: 5.3.1 确定进行测试的可接受天气条件的具体指示。 5.3.2 两种不同的试验边界准备条件；建筑围护结构( 9.1.1.1 )，以及操作范围( 9.1.1.2 ). 5.3.3 在10 Pa（0.04 in.WC）至100 Pa（0.40 in.WC）的压力范围内进行的测试。 5.4 建筑围护结构漏风率的测量。测量材料透气性的试验方法 E2178 )组件的空气泄漏（试验方法 E2357 )单独使用并不能解决所构建的建筑围护结构的各种复杂性，包括但不限于设计、顺序、可施工性、工艺和组件之间的过渡。 5.5 本试验方法适用于所有多区域和大型建筑类型以及建筑的部分或子部分。它可用于测试由单个区域或可作为单个区域进行测试的区域的子部分组成的包络。 完全由内部隔板或地板或两者分隔的子部分组成的测试包络可以通过在整个测试过程中保持这些子部分之间的基线关系作为单个区域进行测试。（参见 附录X1 .另见测试方法 E779 和 E1827 .）单独的小节，每个小节都有自己规定的漏气率，应被视为单独的测试封套，并单独进行测试。在测试孤立的子部分时，必须对不同区域之间的任何外来/侧向空气运动进行监测。 5.6 测试前的建筑准备工作（开窗位置和有意开口的准备，如暖通空调贯穿件和设备）至关重要，并可能对最终测试结果产生重大影响。本试验方法包括建筑围护结构的试验指南，包括和不包括暖通空调- 相关的开口。 5.7 符合规定的空气泄漏率并不意味着所有潜在的有问题的泄漏都已密封。 5.8 虽然该测试确定了封套的空气泄漏率，但它并不能确定泄漏位置的位置。 注1: 例如，参见实践 E1186 用于定位泄漏。除了累积泄漏面积外，泄漏位置也是正常运行条件下泄漏的重要决定因素。

1.1 This standard test method covers a quantitative field-test procedure and calculation method for assessing an air leakage rate using a fan-induced pressure differential(s) across the building envelope, generated by blower doors or equivalent equipment. 1.2 Building setup conditions in accordance with defining the test boundaries appropriate for testing the envelope’s air leakage are defined in this test method. 1.3 Procedure to determine the air pressure boundaries of the test envelope to be tested are provided in this test method. 1.4 This test method applies to all multizone and large building types and portions or subsections thereof. 1.5 This test method defines three test procedures: multipoint regression, repeated single point, and repeated two-point air leakage rate testing. 1.6 This test method allows for testing the test envelope in a pressurized condition, a depressurized condition, or in both conditions and averaging the results. 1.7 This test method applies to an air leakage rate specification with a reference pressure greater than 10 Pa (0.04 in. WC) and not greater than 100 Pa (0.40 in. WC). 1.8 This test method describes two methods of preparation for the building in order to conduct the test: the building envelope where HVAC-related openings are excluded, and on the operational envelope where the HVAC-related openings are included. 1.9 Units— The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.10 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.11 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 This test method does not establish requirements for airtightness but provides means of assessing compliance with specified air-leakage rates established elsewhere. 5.2 This test method is used to determine the airtightness of building envelopes or portions thereof by measuring the air leakage rate at specified reference pressure differentials. 5.3 This test method provides: 5.3.1 Specific directions for determining acceptable weather conditions for conducting the test. 5.3.2 Two different test boundary preparation conditions; building envelope ( 9.1.1.1 ), and operational envelope ( 9.1.1.2 ). 5.3.3 Testing conducted in a range of pressures from 10 Pa (0.04 in. WC) to 100 Pa (0.40 in. WC). 5.4 A measurement of the air-leakage rate of the constructed building envelope. Test methods that measure the air permeance of materials (Test Method E2178 ) and air leakage of assemblies (Test Method E2357 ) alone do not address the various complexities of the constructed building envelope, including but not limited to design, sequence, constructability, workmanship, and the transitions between assemblies. 5.5 This test method applies to all multizone and large building types and portions or subsections of buildings. It can be used to test envelopes that consist of a single zone or subsections of a zone that can be tested as a single zone. Test envelopes that are entirely composed of subsections separated by interior partitions or floors, or both, may be tested as a single zone by maintaining baseline relationships between these subsections throughout testing. (See Appendix X1 . See also Test Methods E779 and E1827 .) Isolated subsections, each with its own specified air-leakage rate, shall be treated as separate test envelopes and tested separately. While testing isolated subsections, monitoring must be conducted for any extraneous/flanking air movement between the different zones. 5.6 The building preparations prior to testing (fenestration positions and preparation of intentional openings such as HVAC penetrations and equipment) are critically important and can have a strong influence on the final test results. This test method includes guidance for testing of the building envelope both including and excluding HVAC-related openings. 5.7 Compliance with a specified air leakage rate does not imply that all potentially problematic leaks have been sealed. 5.8 While this test determines the air leakage rate of an envelope, it does not identify the location of leakage sites. Note 1: See, for example, Practices E1186 for locating leaks. The location of leaks, in addition to their cumulative leakage area, is also an important determinant of leakage under normal operating conditions.