title: Volume flow calculations on gas leaks imaged with infrared gas-correlation.
abstract: Two methods for volume flow calculation from images of methane leakages to the atmosphere are presented. The images contain calibrated gas concentration × path length pixel information, and are processed with a block matching method and a theoretical velocity field method. Results from known methane flow in two laboratory setups and one unknown real leakage from a gas processing plant are compared with the image processing methods. The methods are generic and can be implemented in common infrared systems for gas visualization. This work provides a new tool for estimating and reporting volume flow emissions from gas processing plants to the authorities.
authors.affiliation: Department of Physics, Lund Institute of Technology, P.O. Box 18, SE-221 00 Lund, Sweden. jonas.sandsten@insatnet.nu
authors.forename: Jonas
authors.initials: J
authors.lastname: Sandsten
authors.forename: Martin
authors.initials: M
authors.lastname: Andersson
mesh_terms: D000465:Algorithms; D001272:Atmosphere / Q000032:analysis*; D004784:Environmental Monitoring / Q000379:methods*; D005740:Gases / Q000737:chemistry*; D008697:Methane / Q000032:analysis*; D012212:Rheology / Q000379:methods*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013223:Statistics as Topic
chemical_list: D005740:Gases; D008697:Methane