Ionina K. Optical-fiber tool for natural gas humidity measuring control based on dew point method

The subject of this research is the process of measuring control of natural gas humidity. The goal of this work is an increase of accuracy and probability of measuring control of natural gas humidity due to the use of multiple reflection. Research methods: the basics of theory of interaction between optical radiation and moisture in gas; methods of physical, mathematical and computer modeling; the basics of theory of heat conduction; the theory of measurements, control and mathematical statistics. The condensation method of natural gas dew point temperature measurement by using multiple reflection in cooled light-guiding structure received further development. The mathematical model of dew point measuring transducer based on flat fiber which enables measurement selectivity is proposed for the first time. Mathematical models of radiation spreading in flat and hollow fibers are improved. The mathematical model of dew point measuring transducer based on hollow fiber which enables an increase of accuracy of humidity measurement is improved. Development of devices for measuring control of natural gas humidity, recommendations for designing and calibrating the fiber device, measuring control algorithm, structural schematics of fiber devices for measuring control of natural gas humidity are among the practical results. Extent of application - the results of Ph.D. thesis are applied in the educational process of the chair of electronics of Vinnytsіa National Technical University and into of SPF "Reconstructsia" (Vinnytsіa). The domain (field) of application - gas extraction, chemical industry.