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SPHERICAL RESONATOR SPEED OF SOUND MEASUREMENTS OF NEW ALTERNATIVE GAS MIXTURES Fernando J. Pérez Sanz Universidad de Valladolid Spain.

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Presentation on theme: "SPHERICAL RESONATOR SPEED OF SOUND MEASUREMENTS OF NEW ALTERNATIVE GAS MIXTURES Fernando J. Pérez Sanz Universidad de Valladolid Spain."— Presentation transcript:

1 SPHERICAL RESONATOR SPEED OF SOUND MEASUREMENTS OF NEW ALTERNATIVE GAS MIXTURES Fernando J. Pérez Sanz Universidad de Valladolid Spain

2 Motivation of the study Depleting of fossil fuels reservoirs. Increasing prices of fuels Environmental problems Global warming Greenhouse effect Acid rain New fuel are being developed Mixture properties recuired Heat Capacities Equation of State

3 Methods Thermodynamics Speed of sound is an important thermodynamic parameter from which heat capacities and EoS can be measured. Speed of sound is fitted to a Virial equation:

4 Methods Acoustic Resonance Determination of radius by acoustic resonance in Argon

5 Results Speed of sound measurements

6 Results Comparison to GERG-2008 EoS (I)

7 Results Comparison to GERG-2008 EoS (II) x CO =0,05x CO =010 T=273,16Kdesv (%)T=325Kdesv(%)T=273,16Kdesv(%)T=325Kdesv(%) u 0 (m/s) 336,95260, ,46620, ,02110, ,47630,0262 γ pg 20,76650,04851,39980,04531,40090,08911,39990,0508 C v0 (J/mol-K) 29,08100,165820,79480,154620,73700,312320,79080,1833 C p0 (J/mol-K) 1,40040,120229,10930,112329,05150,221529,10530,1294 β a (m3/mol) 1,2545E-059,97812,6715E-050,95231,2014E-0512,84072,6446E-051,7048 γ a (m3/mol) 2 5,0787E-090,29384,0764E-090,08265,1696E-090,28264,1458E-090,0778

8 Future work Coal Mine Methane Biogas Mixture. CO 2 -N 2 Mixtures

9 Questions


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