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首页> 外文期刊>International Journal of Ventilation >Analysis of U.S. Commercial Building Envelope Air Leakage Database to Support Sustainable Building Design
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Analysis of U.S. Commercial Building Envelope Air Leakage Database to Support Sustainable Building Design

机译：分析用于支持可持续建筑设计的美国商业建筑信封漏气数据库

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In 1998, NIST published a review of commercial and institutional building airtightness data that found significant levels of air leakage and debunked the "myth" of the airtight commercial building (Persily, 1998). Since then, NIST has expanded and maintained a database of whole building envelope leakage measurements of U.S. commercial and institutional buildings. In addition to building leakage values collected from research publications, low-energy building programs and private pressurization testing firms, the database includes basic building characteristics such as year built, building type, floor area, number of storeys, location, and wall construction type for many of the buildings. The purposes of the database arc to support the design and construction of low-energy buildings, to establish default values for building simulation, to estimate the energy savings potential of airtightness requirements in standards and codes, and to identify opportunities for additional improvements in building airtightness performance. The U.S. commercial building envelope leakage database contains data for almost 400 buildings including about 70 constructed in the past decade. The average air leakage for the buildings is 20% tighter than the average for the 228 buildings included in a similar 2011 analysis. The data were analysed to determine the factors that impact airtightness such as building type and height. Recent additions to the database include numerous buildings constructed to meet the specifications of sustainable building programs such as the U.S. Green Building Council's LEED rating system, as well as buildings designed and constructed with air barriers. The analysis found that the 79 buildings with an air barrier had an average air leakage almost 70% less than the average for the 290 buildings not specified as having an air barrier thus demonstrating the critical need to design and construct commercial buildings with an air barrier to support sustainable building design.
机译：NIST在1998年发表了一篇关于商业和机构建筑物气密性数据的评论，发现大量的空气泄漏并揭穿了气密性商业建筑物的“神话”（Persily，1998）。从那时起，NIST扩展并维护了美国商业和公共机构建筑物整个建筑围护结构泄漏测量的数据库。除了从研究出版物，低能耗建筑计划和私人加压测试公司收集的建筑物泄漏值之外，该数据库还包括建筑物的基本特征，例如建造年份，建筑物类型，建筑面积，层数，位置和墙体构造类型。许多建筑物。数据库的目的是支持低能耗建筑物的设计和建造，建立建筑物模拟的默认值，估算标准和规范中气密性要求的节能潜力，并确定进一步改善建筑物气密性的机会性能。美国商业建筑围护结构泄漏数据库包含近400座建筑物的数据，其中包括过去十年中建造的约70座建筑物。与2011年类似的分析结果相比，这些建筑物的平均漏气量比228座建筑物的平均漏气量高20％。分析数据以确定影响气密性的因素，例如建筑物的类型和高度。数据库的最新添加内容包括为满足可持续建筑计划的规格而建造的众多建筑物，例如美国绿色建筑委员会的LEED评级系统，以及设计和建造有空气屏障的建筑物。分析发现，这79座设有空气屏障的建筑物的平均漏气量比未指定为有空气屏障的290座建筑物的平均漏气量少近70％，因此表明设计和建造带有空气屏障的商业建筑物的关键需求在于：支持可持续建筑设计。

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