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空气屏障隐含碳:一项批判性评论.pdf

上传人: 探** 编号:711914 2025-06-04 42页 6.08MB

1、Dr.Randy Van Straaten P.Eng.Building Enclosure Labs IncAir Barrier Embodied Carbon:A Critical ReviewAdam BroderickDuPont Performance Building SolutionsAdam BroderickSenior Research Scientist DuPont Shelter SolutionsRandy Van StraatenBuilding Science SpecialistBELiAir Barrier Embodied Carbon:A Critic

2、al ReviewLearning Objectives1.Identify the embodied carbon impact stages for air barrier.1.Determine Clear Field vs Linear Impacts.1.Illustrate the impact of air barrier on the embodied carbon of building envelope assemblies.1.Identify the impacts of common air barrier strategy selections.Randy Van

3、Straaten P.EngPresident and Building Science Specialist at Building Enclosure Labs Inc.(BELi)in London,Ontario.He has conducted embodied carbon analysis for building envelopes and whole buildings for architects and certification along with systems and products for contractors and manufacturers.Adam

4、BroderickResearch and Development Scientist with 10 years experience applying material science principles and building science fundamentals to drive towards innovative building envelope products and applications(plus another couple of years as a lab coat polymer chemist/material scientist).Whats the

5、 Data on Global Warming?A few of the many factoids:Global CO2levels now at their highest in the last 800,000+years 2024 was the warmest year on record Oceans are hottest on record4Global Mean Surface TemperatureOcean Heat ContentRefs:https:/www.climate.gov/media/16408https:/wmo.int/sites/default/fil

6、es/2025-03/WMO-1368-2024_en.pdfThe world is heating up because carbon dioxide(CO2)and other GHGs are accumulating in the atmosphere,meaning less heat can escape to spaceAtmospheric CO2420 ppmBuildings account for roughly 34%of global GHG emissionsNotes:“Buildings construction industry”and“Other cons

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本文主要内容涉及建筑围护结构中的空气屏障对隐含碳排放的影响。关键点如下: 1. 碳排放影响:空气屏障的隐含碳排放分为不同阶段,包括材料生产、运输、施工等。 2. 温室气体水平:全球CO2浓度达到过去80万年最高点,2024年是记录中最热的一年。 3. 建筑业碳排放:建筑业占全球温室气体排放的34%。 4. 隐含碳与运营碳:建筑生命周期分析(LCA)区分了隐含碳和运营碳,强调生命周期思考。 5. 环境产品声明(EPD):EPD是评估产品环境影响的重要工具,但需确保其准确性和可比性。 6. 隐含碳降低:例如,某品牌泡沫保温材料的EPD显示,其2023年的隐含碳比2020年降低了94%。 7. 碳排放减少策略:建议采用具体的产品和施工策略,以降低建筑围护结构的隐含碳。 核心数据引用: - 全球CO2浓度:目前为420 ppm。 - 建筑业在2023年的全球能源和过程排放中占比34%。 - 某品牌XPS保温材料2021年的EPD显示,其隐含碳为100 kg CO2eq/(m2K/W),而2023年为6.2 kg CO2eq/(m2K/W)。
"建筑围护结构如何影响碳排放?" "空气屏障策略对环境有何影响?" "如何准确评估建筑物的碳足迹?"
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