ANALYTICAL AND METROLOGICAL STUDIES OF BIOGAS COMPRESSIBILITY COEFFICIENT AT LOW OPERATING PRESSURES

Authors

  • O. Ye. Seredyuk Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Street Ivano-Frankivsk Ukraine, 76019
  • N. M. Malisevuch Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Street Ivano-Frankivsk Ukraine, 76019
  • D. O. Seredyuk Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Street Ivano-Frankivsk Ukraine, 76019
  • V. V. Malisevuch Ivano-Frankivsk National Technical University of Oil and Gas, 15 Karpatska Street Ivano-Frankivsk Ukraine, 76019

DOI:

https://doi.org/10.31471/1993-9981-2021-2(47)-5-13

Keywords:

biogas, component composition, humidity, absolute pressure, temperature, pseudocritical temperature, pseudocritical pressure, compressibility factor, compressibility coefficient, computer simulation, gas volume, commercial parameter of biogas.

Abstract

The relevance of determining the compressibility coefficient of biogas for the conditions of its accounting is considered. The analysis of the known Ukrainian and foreign methods and normative documents at definition of physical and chemical parameters of gas mixes, including natural gas and biogas is stated. The absence of current regulations on determining the coefficient of compressibility of biogas, which is necessary for the implementation of its correct and accurate accounting. The essence of the developed algorithm for determining the compressibility coefficient of biogas, which is characterized by a reduced content of methane and increased content of carbon dioxide, nitrogen, oxygen, as well as the presence of water vapor in the biogas. A practical algorithm for determining the compressibility coefficient of biogas has been developed, which involves the use of a relatively simple algorithm for calculating it based on the volume content of biogas components taking into account their critical parameters and pseudo-pressure and temperature values for specific parameters of absolute biogas pressure and temperature. The algorithm is implemented taking into account the information given in specialized reference books, in particular graphical dependences of change of coefficient of compressibility of a mix of gases on the resulted values ​​of their temperature and pressure. An example of calculating the coefficient of compressibility of biogas for the conditions of setting its component composition. Simulation of the change in the compressibility coefficient of biogas from its relative humidity, as well as modeling of this coefficient from the operating pressures and temperature of biogas and its methane content. The metrological analysis of the developed technique and algorithm of determination of coefficient of compressibility of biogas taking into account presence in it of moisture is carried out.

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References

Pro alternatyvni vydy palyva : Zakon Ukrainy vid 21 travnia 2009 r. № 1391-VI. Vidomosti Verkhovnoi Rady Ukrainy (VVR), 2000, № 12, st. 94.

DSTU ISO 15112:2009. Pryrodnyi haz. Vyznachennia enerhii. [Chynnyi vid 2011-01-01]. K.: Derzhspozhyvstandart Ukrainy, 2010. III, 48 s. (Natsionalnyi standart).

Sposib ekspres-vyznachennia teploty zghorannia pryrodnoho hazu : pat. 112737 C2 Ukraina. / O.Ie. Serediuk, T.V. Liutenko, N.M. Malisevych. № a201512215; zaiavl. 09.12.2015; opubl. 10.10.2016, Biul. № 19.

GOST 30319.2-96. Gaz prirodnyj. Metody rascheta fizicheskih svojstv. Opredelenie koefficienta szhimaemosti. [Vveden ot 1997-07-01]. Minsk: Mezhgosudarstvennyj sovet po standartizacii, metrologii i sertifikacii, 1996. ІІІ, 53 s. (Mezhgosudarstvennyj standart).

GOST 30319.3-96. Gaz prirodnyj. Metody rascheta fizicheskih svojstv opredelenie fizicheskih svojstv po uravneniyu sostoyaniya. [Vveden ot 1997-07-01]. Minsk: Mezhgosudarstvennyj sovet po standartizacii, metrologii i sertifikacii, 1996. ІІІ, 33 s. (Mezhgosudarstvennyj standart).

RD 50-213-80. Pravila izmereniya raskhoda gazov i zhidkostej standartnymi suzhayushchimi ustrojstvami. [Vveden ot 1982-07-01]. Moskva: Izd. standartov, 1982. 333 s.

GOST 30319.2-2015. Gaz prirodnyj. Metody rascheta fizicheskih svojstv. Vychislenie fizicheskih svojstv na osnove dannyh o plotnosti pri standartnyh usloviyah i soderzhanii azota i dioksida ugleroda. [Vzamen GOST 30319.1-96, GOST 30319.2-96; vveden ot 2017-01-01]. Moskva: Standartinform, 2016. ІІ, 14 s. (Mezhgosudarstvennyj standart).

GSSSD MR 113-03. Metodika GSSSD. Opredelenie plotnosti, faktora szhimaemosti, pokazatelya adiabaty i koefficienta dinamicheskoj vyazkosti vlazhnogo neftyanogo gaza v diapazone temperatur 263...500 K pri davleniyah do 15 MPA. [Data prinyatiya 2003-06-10]. Moskva, 2003. 26 s.

Izmerenie i uchet raskhoda gaza : sprav. posobie / V.A. Dinkov i dr. M.: Nedra, 1979. 304 s.

Plotnikov V. M., Podreshetnikov V. A., Teterevyatnikov L. N. Pribory i sredstva ucheta prirodnogo gaza i kondensata : L.: Nedra, 1989. 238 s.

Matiko F. D., Pavliuk I. P. Rozrakhunok faktora styskuvanosti volohoho pryrodnoho hazu v zadachakh yoho obliku. Metody ta prylady kontroliu yakosti. 2002. № 9. S. 79-81.

Published

2021-12-28

How to Cite

Seredyuk О. Є., Malisevuch Н. М., Seredyuk Д. О., & Malisevuch В. В. . (2021). ANALYTICAL AND METROLOGICAL STUDIES OF BIOGAS COMPRESSIBILITY COEFFICIENT AT LOW OPERATING PRESSURES. METHODS AND DEVICES OF QUALITY CONTROL, (2(47), 5–13. https://doi.org/10.31471/1993-9981-2021-2(47)-5-13

Issue

Section

MEASUREMENT OF PHYSICAL AND MECHANICS PARAMETERS OF SUBSTANCES