Propozycja metody pomiaru ciepła spalania gazu ziemnego z uwzględnieniem wilgotności gazu i powietrza

W pracy opisano autorską metodę wyznaczania ciepła spalania gazu ziemnego. Metodę tę porównano ze znanymi w literaturze metodami pomiarowymi. Przeprowadzono symulacje wpływu wilgotności gazu oraz wilgotności względnej powietrza dostarczanego w procesie spalania, na względną różnicę wyznaczania ciepła spalania gazu ziemnego. Praca zawiera wyniki symulacji wraz z analizą wpływu wilgotności powietrza i gazu na wartość ciepła spalania gazu ziemnego.

The paper presents the original method of determining the CALORIFIC VALUE of natural gas, which does not require drying the gas. The method consists in measuring the combustion temperature in a gas burner while maintaining a constant stream of gas mixture with air. This method was compared with methods known in the literature. Many currently used measuring methods that allow to determine the heat of combustion require the use of dry gas, which under industrial conditions is very often troublesome. The work discusses the basics of the natural gas combustion process based on which the simulations of the influence of water vapor contained in both natural gas and air supplied to the burner on the calorific value of gas were carried out. The results of the simulation were used to determine the errors of the proposed measurement method. Simulations were carried out for diversified chemical composition of natural gas and various water vapor content. Based on the conducted simulations, it was found that the relative difference error is within 0.5% to 1.7% for different values of moisture contained in both the gas and air involved in the combustion process.