ASSESSMENT OF THE POSSIBILITY OF USING ULTRASONIC FLOW METERS FOR FIXING THE CONSUMPTION OF GAS-HYDRO MIXTURES
Keywords:hydrogen-enriched natural gas, hydrogen, flow measurement, compressibility factor, accuracy.
The article presents an extremely topical issue of our time, which is the need to develop hydrogen technologies in our country, as set out in the adopted Energy Strategy until 2050. The publication emphasizes the importance of choosing the optimal technology for transporting large volumes of hydrogen over long distances, which can be implemented on the basis of the existing pipeline system. The necessity of high-quality and efficient metering of gas-hydrogen mixtures with different hydrogen content is proved. An analysis of modern technologies that can be used for such needs, based on existing research and publications in this area in developed countries of the European continent, is carried out. The possibility of using various types of flow meters in the residential, public, industrial and transport sectors is considered and it is established that ultrasonic meters are the most suitable for use in each of these sectors of the national economy. The experience of using different measuring technologies for hydrogen metering by NewGasMet project partners was also analyzed and the highest percentage of ultrasonic metering was confirmed. Based on the general analysis of existing technologies, ultrasonic flowmeters were selected as the most suitable for the task of recording the flow of gas-hydrogen mixtures. Several types of ultrasonic flowmeters from well-known manufacturers are considered in detail as an example, analyzing their features of functioning, placement on the measuring sites, and taking into account their main characteristics. As a result of the detailed analysis of a large number of ultrasonic flowmeters, a list of basic equipment has been formed for which metrological characteristics are normalized and indicated in the available technological documentation, and which can be further considered in order to improve their measurement accuracy, taking into account the compression ratio of the measuring medium, which is the next task of the scientific research.
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