contributor author | Keke Zheng | |
contributor author | Yong K. Cho | |
contributor author | Chao Wang | |
contributor author | Haorong Li | |
date accessioned | 2017-12-30T13:03:12Z | |
date available | 2017-12-30T13:03:12Z | |
date issued | 2016 | |
identifier other | %28ASCE%29AE.1943-5568.0000182.pdf | |
identifier uri | http://138.201.223.254:8080/yetl1/handle/yetl/4245073 | |
description 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. | |
publisher | American Society of Civil Engineers | |
title | Noninvasive Residential Building Envelope R-Value Measurement Method Based on Interfacial Thermal Resistance | |
type | Journal Paper | |
journal volume | 22 | |
journal issue | 4 | |
journal title | Journal of Architectural Engineering | |
identifier doi | 10.1061/(ASCE)AE.1943-5568.0000182 | |
page | A4015002 | |
tree | Journal of Architectural Engineering:;2016:;Volume ( 022 ):;issue: 004 | |
contenttype | Fulltext | |