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    Noninvasive Residential Building Envelope R-Value Measurement Method Based on Interfacial Thermal Resistance

    Source: Journal of Architectural Engineering:;2016:;Volume ( 022 ):;issue: 004
    Author:
    Keke Zheng
    ,
    Yong K. Cho
    ,
    Chao Wang
    ,
    Haorong Li
    DOI: 10.1061/(ASCE)AE.1943-5568.0000182
    Publisher: American Society of Civil Engineers
    Abstract: The building envelope plays an important role for the contributions to the whole building thermal load, especially for residential houses without significant internal heat gain; hence, it is a critical component for influencing a building’s thermal performance. However, the envelope R-value is usually acquired from the original design value, regardless of the thermal insulation degrading that has occurred during the whole long lifecycle. The main reason lies in that, with traditional methods, the in situ envelope R-value is extremely inconvenient to measure. In this study, a simple noninvasive approach was proposed to measure the envelope R-value using the interfacial thermal resistance from the thermal boundary layer between the envelope exterior surface and the ambient air, and the envelope surface temperature measured through the infrared thermal imaging. A field measurement procedure was developed and implemented for a typical detached residential house, along with a widely accepted method using film heat-flux sensors as a validation test. The final results show a good approximation between these two tests, which shows that the proposed method could extend the functions of thermography from only qualitative diagnosis to quantitative measurement on envelope thermal performance.
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      Noninvasive Residential Building Envelope R-Value Measurement Method Based on Interfacial Thermal Resistance

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4245073
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    • Journal of Architectural Engineering

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    contributor authorKeke Zheng
    contributor authorYong K. Cho
    contributor authorChao Wang
    contributor authorHaorong Li
    date accessioned2017-12-30T13:03:12Z
    date available2017-12-30T13:03:12Z
    date issued2016
    identifier other%28ASCE%29AE.1943-5568.0000182.pdf
    identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4245073
    description abstractThe building envelope plays an important role for the contributions to the whole building thermal load, especially for residential houses without significant internal heat gain; hence, it is a critical component for influencing a building’s thermal performance. However, the envelope R-value is usually acquired from the original design value, regardless of the thermal insulation degrading that has occurred during the whole long lifecycle. The main reason lies in that, with traditional methods, the in situ envelope R-value is extremely inconvenient to measure. In this study, a simple noninvasive approach was proposed to measure the envelope R-value using the interfacial thermal resistance from the thermal boundary layer between the envelope exterior surface and the ambient air, and the envelope surface temperature measured through the infrared thermal imaging. A field measurement procedure was developed and implemented for a typical detached residential house, along with a widely accepted method using film heat-flux sensors as a validation test. The final results show a good approximation between these two tests, which shows that the proposed method could extend the functions of thermography from only qualitative diagnosis to quantitative measurement on envelope thermal performance.
    publisherAmerican Society of Civil Engineers
    titleNoninvasive Residential Building Envelope R-Value Measurement Method Based on Interfacial Thermal Resistance
    typeJournal Paper
    journal volume22
    journal issue4
    journal titleJournal of Architectural Engineering
    identifier doi10.1061/(ASCE)AE.1943-5568.0000182
    pageA4015002
    treeJournal of Architectural Engineering:;2016:;Volume ( 022 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
    yabeshDSpacePersian