TY - JOUR
T1 - Ideal-gas heat capacity for 2,3,3,3-tetrafluoropropene (HFO-1234yf) determined from speed-of-sound measurements
AU - Kano, Yuya
AU - Kayukawa, Yohei
AU - Fujii, Kenichi
AU - Sato, Haruki
PY - 2010/12/1
Y1 - 2010/12/1
N2 - The isobaric ideal-gas heat capacity for HFO-1234yf, which is expected to be one of the best alternative refrigerants for HFC-134a, was determined on the basis of speed-of-sound measurements in the gaseous phase. The speed of sound was measured by means of the acoustic resonance method using a spherical cavity. The resonance frequency in the spherical cavity containing the sample gas was measured to determine the speed of sound. After correcting for some effects such as the thermal boundary layer and deformation of the cavity on the resonance frequency, the speed of sound was obtained with a relative uncertainty of 0.01 %. Using the measured speed-of-sound data, the acoustic-virial equation was formulated and the isobaric ideal-gas heat capacity was determined with a relative uncertainty of 0.1 %. A temperature correlation function of the isobaric ideal-gas heat capacity for HFO-1234yf was also developed.
AB - The isobaric ideal-gas heat capacity for HFO-1234yf, which is expected to be one of the best alternative refrigerants for HFC-134a, was determined on the basis of speed-of-sound measurements in the gaseous phase. The speed of sound was measured by means of the acoustic resonance method using a spherical cavity. The resonance frequency in the spherical cavity containing the sample gas was measured to determine the speed of sound. After correcting for some effects such as the thermal boundary layer and deformation of the cavity on the resonance frequency, the speed of sound was obtained with a relative uncertainty of 0.01 %. Using the measured speed-of-sound data, the acoustic-virial equation was formulated and the isobaric ideal-gas heat capacity was determined with a relative uncertainty of 0.1 %. A temperature correlation function of the isobaric ideal-gas heat capacity for HFO-1234yf was also developed.
KW - Acoustic resonance
KW - HFO-1234yf (1,1,1,2-tetrafluoroethane)
KW - Ideal-gas heat capacity
KW - Speed of sound
KW - Spherical resonator
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U2 - 10.1007/s10765-010-0885-7
DO - 10.1007/s10765-010-0885-7
M3 - Article
AN - SCOPUS:78650861043
SN - 0195-928X
VL - 31
SP - 2051
EP - 2058
JO - International Journal of Thermophysics
JF - International Journal of Thermophysics
IS - 11-12
ER -