Simultaneous determination of gas leakage location and leakage rate based on local temperature gradient

Heng Yang, Xue Feng Yao*, Shen Wang, Li Yuan, Yu Chao Ke, Ying Hua Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

In this study, a quantitative non-contact detection method for gas leakage problem based on infrared thermography technology is developed. First, the relationship between the gas leakage rate and the temperature gradient at the edge of the leaking hole is established based on thermodynamics, dimensional analysis and numerical methods. Second, the temperature fields surrounding the gas leakage location are extracted using an infrared thermal imager. Both the gas leakage location and leakage rate are obtained for the damaged rubber seals. Finally, the detections of gas leakage location with arbitrary shape and no obvious temperature difference are discussed and generalized. These results will play an important role in detecting the leakage rate for the damaged seal structures or containers.

Original languageEnglish
Pages (from-to)233-240
Number of pages8
JournalMeasurement: Journal of the International Measurement Confederation
Volume133
DOIs
Publication statusPublished - Feb 2019
Externally publishedYes

Keywords

  • Damaged rubber seals
  • Gas leakage
  • Infrared thermography
  • Non-contact detection
  • Temperature gradient

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