EXPERIMENTAL RESEARCH ON INFRARED THERMOGRAPHIC DETECTION FOR TIGHTNESS OF BUILDING VENTILATION DUCT
LIU Qiang1, ZHU Hong-guang2, MAN Shou-yuan3, YI Cheng2
1.Beijing Buiding Research Institute Co.Ltd of CSCEC,100076 Beijing,China;2.China University of Mining & Technology Beijing School of Mechanics & Civil Engineering,Cumt,100083,Beijing,China;3.China Southern Airlines Company Limited Beijing new airport construction headquarters 100000,Beijing,China
Abstract：
It was proposed that infrared thermographic method shall be used to test the tightness of building ventilation duct. This method is convenient for engineering application due to its simple operation, remote detection and real time positioning, etc. Critical defect size specified in national standards for building ventilation duct under different levels of wind pressure was obtained through theoretical derivation of calculation formula for air leakage and defect size. Infrared thermal spectrum for the leakage point of ventilation duct was obtained through heating and ventilation test. This paper proposed the method to determine the flaw size and researched and summarized the optimal detection time and minimum detectable area. References were provided for infrared detection of the tightness of building ventilation duct.
LIU Qiang,ZHU Hong-guang,MAN Shou-yuan et al. EXPERIMENTAL RESEARCH ON INFRARED THERMOGRAPHIC DETECTION FOR TIGHTNESS OF BUILDING VENTILATION DUCT[J]. Architecture Technology, 2016, 47(1): 79-.
