Speed-of-Sound Measurements and Ideal-Gas Heat Capacity for 1,1,1,2-Tetrafluoroethane and Difluoromethane

1996 ◽  
Vol 41 (5) ◽  
pp. 1187-1190 ◽  
Author(s):  
Tsutomu Hozumi ◽  
Haruki Sato ◽  
Koichi Watanabe
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Ideal Gas

Speed of sound and ideal-gas heat capacity at constant pressure of gaseous trifluoroiodomethane (CF3I)

1997 ◽  
Vol 137 (1-2) ◽  
pp. 121-131 ◽  
Author(s):  
Y.Y. Duan ◽  
L.Q. Sun ◽  
L. Shi ◽  
M.S. Zhu ◽  
L.Z. Han
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Constant Pressure ◽  
Ideal Gas

FALSIFICATIONS OF POISSON ADIABATE, HUGONIO ADIABATE, LAPLACE SOUND SPEEDS. MODERNIZATION OF FOUNDATIONS OF THERMODYNAMICS

2020 ◽  
Vol 5 (333) ◽  
pp. 58-67
Author(s):  
K.B. Jakupov ◽  
Keyword(s):  
Shock Wave ◽  
Heat Capacity ◽  
Specific Heat ◽  
Specific Heat Capacity ◽  
Speed Of Sound ◽  
Constant Pressure ◽  
Energy Balance Equation ◽  
Ideal Gas ◽  
Constant Volume ◽  
Capacity Coefficient

The inequality of the universal gas constant of the difference in the heat capacity of a gas at constant pressure with the heat capacity of a gas at a constant volume is proved. The falsifications of using the heat capacity of a gas at constant pressure, false enthalpy, Poisson adiabat, Laplace sound speed, Hugoniot adiabat, based on the use of the false equality of the universal gas constant difference in the heat capacity of a gas at constant pressure with the heat capacity of a gas at a constant volume, have been established. The dependence of pressure on temperature in an adiabatic gas with heat capacity at constant volume has been established. On the basis of the heat capacity of a gas at a constant volume, new formulas are derived: the adiabats of an ideal gas, the speed of sound, and the adiabats on a shock wave. The variability of pressure in the field of gravity is proved and it is indicated that the use of the specific coefficient of ideal gas at constant pressure in gas-dynamic formulas is pointless. It is shown that the false “basic formula of thermodynamics” implies the falseness of the equation with the specific heat capacity at constant pressure. New formulas are given for the adiabat of an ideal gas, adiabat on a shock wave, and the speed of sound, which, in principle, do not contain the coefficient of the specific heat capacity of a gas at constant pressure. It is shown that the well-known equation of heat conductivity with the gas heat capacity coefficient at constant pressure contradicts the basic energy balance equation with the gas heat capacity coefficient at constant volume.

Ideal Gas Heat Capacity Derived from Speed of Sound Measurements in the Gaseous Phase for trans-1,3,3,3-Tetrafluoropropene

2013 ◽  
Vol 58 (11) ◽  
pp. 2966-2969 ◽  
Author(s):  
Yuya Kano ◽  
Yohei Kayukawa ◽  
Kenichi Fujii ◽  
Haruki Sato
Keyword(s):  
Heat Capacity ◽  
Gaseous Phase ◽  
Speed Of Sound ◽  
Ideal Gas

Speed of sound and ideal-gas heat capacity of freon R-236ea

2008 ◽  
Vol 15 (3) ◽  
pp. 369-371 ◽  
Author(s):  
S. G. Komarov ◽  
V. A. Gruzdev ◽  
S. V. Stankus
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Ideal Gas

Speed of sound, ideal-gas heat capacity at constant pressure, and second virial coefficients of HFC-227ea

2001 ◽  
Vol 178 (1-2) ◽  
pp. 73-85 ◽  
Author(s):  
Chang Zhang ◽  
Yuan-Yuan Duan ◽  
Lin Shi ◽  
Ming-Shan Zhu ◽  
Li-Zhong Han
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Constant Pressure ◽  
Virial Coefficients ◽  
Ideal Gas ◽  
Second Virial Coefficients

Speed of Sound and Ideal-Gas Heat Capacity at Constant Pressure of Gaseous Difluoromethane

1997 ◽  
Vol 42 (4) ◽  
pp. 795-799 ◽  
Author(s):  
Li-Qun Sun ◽  
Yuan-Yuan Duan ◽  
Lin Shi ◽  
Ming-Shan Zhu ◽  
Li-Zhong Han
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Constant Pressure ◽  
Ideal Gas

Ideal-Gas Heat Capacity for 2,3,3,3-Tetrafluoropropene (HFO-1234yf) Determined from Speed-of-Sound Measurements

2010 ◽  
Vol 31 (11-12) ◽  
pp. 2051-2058 ◽  
Author(s):  
Yuya Kano ◽  
Yohei Kayukawa ◽  
Kenichi Fujii ◽  
Haruki Sato
Keyword(s):  
Heat Capacity ◽  
Speed Of Sound ◽  
Ideal Gas
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