Вимірювальна техніка та метрологія. – 2021. – Випуск 82, №1

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Measuring Equipment and Metrology : scientific journal. – Lviv : Lviv Politechnic Publishing House, 2021. – Volume 82, № 1. – 44 р.

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Author: search.filters.author.Stadnyk Bohdan

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    Evaluation of natural gas quality by its calorific value
    (Lviv Politechnic Publishing House, 2021) Motalo Vasyl; Stadnyk Bohdan; Motalo Andriy
    The article develops and analyzes a method of the comprehensive evaluation of the quality of natural gas as an energy source. The method is based on establishing the calorific value of natural gas as a determinative index of its quality, taking into account all gas properties: both those that positively affect the gas calorific value and its energy content, and those that adversely affect. The generalized definition of natural gas quality as the degree to which the set of the own gas characteristics (component composition and physical properties) meet the requirements concerning energy content, safety, ecology, and other factors is given. The results of experimental researches on natural gas quality according to the developed procedure are also presented. Key words: Natural Gas; Energy Source; Natural Gas Quality; Index of Natural Gas Quality; Properties of Natural Gas; Calorific Value of Natural Gas.
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    Study of thermal stability of metal glasses of metal – metal and metal – metaloid systems for thermometry purposes
    (Lviv Politechnic Publishing House, 2021) Stadnyk Bohdan; Skoropad Pylyp; Nakonechnyi Yuriy; Myhaylov Vitaliy
    The metastable metallic glasses are studied in the paper. Their properties as the material for producing the sensitive elements of thermometric transducers depend on the peculiarities of manufacturing the mentioned material. The selection of modes of glass production and the correction of modes facilitates to increase in the operating temperatures of the transducers or/and extends their service life. Key words: Metal amorphous alloy; Metastable material; Sensitive element; Thermoelectric transducer.