Direct Measurement of the Thermal Pressure Coefficient of Water

1962 ◽  
Vol 15 (4) ◽  
pp. 740 ◽  
Author(s):  
GN Malcolm ◽  
GLD Ritchie
Keyword(s):  
Thermal Expansion ◽  
Satisfactory Agreement ◽  
Direct Measurement ◽  
Isothermal Compressibility ◽  
Pressure Coefficient ◽  
Constant Volume ◽  
Thermal Pressure ◽  
Wide Range ◽  
Temperature And Pressure

A constant volume thermometer has been used to measure the thermal pressure coefficient of water over a wide range of temperature and pressure. The results show satisfactory agreement with values calculated from the appropriate data for the coefficients of thermal expansion and isothermal compressibility of water.

scholarly journals (P,ρ,T) properties of 1-octyl-3-methylimidazolium tetrafluoroborate

2018 ◽  
Vol 83 (1) ◽  
pp. 61-73 ◽  
Author(s):  
Javid Safarov ◽  
Aygul Namazova ◽  
Astan Shahverdiyev ◽  
Egon Hassel
Keyword(s):  
Equation Of State ◽  
Speed Of Sound ◽  
Isothermal Compressibility ◽  
Constant Pressure ◽  
Pressure Coefficient ◽  
Heat Capacities ◽  
Thermal Pressure ◽  
Average Percent Deviation ◽  
Wide Range ◽  
Isentropic Exponent

(p,?,T) data of 1-octyl-3-methylimidazolium tetrafluoroborate [OMIM][BF4] over a wide range of temperatures, from 278.15 to 413.15 K, and pressures, p, up to 140 MPa are reported with an estimated ?0.01?0.08 % experimental relative average percent deviation (APD) in the density. The measurements were performed using an Anton Paar DMA HPM vibration tube densimeter. (p,?,T) Data for [OMIM][BF4] was fitted and the parameters of the applied equation were determined as a function of pressure and temperature. After a thorough analysis of literature values and validity of the used equation of state, various thermophysical properties, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient, internal pressure, heat capacities at constant pressure and volume, speed of sound and isentropic exponent at temperatures in the range 278.15?413.15 K and pressures p up to 140 MPa were calculated.

scholarly journals Unravelling thermal stress due to thermal expansion mismatch in metal–organic frameworks for methane storage

2021 ◽  
Author(s):  
Jelle Wieme ◽  
Veronique Van Speybroeck
Keyword(s):  
Thermal Expansion ◽  
Thermal Stress ◽  
Pressure Coefficient ◽  
Metal Organic Frameworks ◽  
Methane Storage ◽  
Thermal Expansion Mismatch ◽  
Thermal Pressure ◽  
Temperature Changes ◽  
Metal Organic ◽  
The Impact

Thermal stress is present in metal–organic frameworks undergoing temperature changes during adsorption and desorption. We computed the thermal pressure coefficient as a proxy for this phenomenon and discuss the impact of thermal expansion mismatch.

Thermal Anomaly in the Temperature Dependence of the Energy–Volume Coefficient of Aqueous KCl Solutions

1973 ◽  
Vol 51 (12) ◽  
pp. 1885-1888 ◽  
Author(s):  
Ikchoon Lee ◽  
J. B. Hyne
Keyword(s):  
Aqueous Solution ◽  
Temperature Dependence ◽  
Potassium Chloride ◽  
Direct Measurement ◽  
Pure Water ◽  
Pressure Coefficient ◽  
Thermal Anomaly ◽  
Thermal Pressure ◽  
Temperature Range ◽  
Volume Coefficient

The temperature dependence of the energy–volume coefficient of pure water and of aqueous potassium chloride solutions as a function of concentration over the temperature range 10–50 °C has been determined by direct measurement of constant volume thermal–pressure coefficient. The results show that a thermal anomaly exists in the energy–volume coefficient of aqueous solution in the temperature range 30–40 °C and becomes more pronounced as the concentration of solute is increased.

Determination of the Equation of State of Polyisobutylene

1969 ◽  
Vol 42 (5) ◽  
pp. 1409-1411
Author(s):  
B. E. Eichinger ◽  
P. J. Flory
Keyword(s):  
Thermal Expansion ◽  
Equation Of State ◽  
Thermal Expansion Coefficient ◽  
Expansion Coefficient ◽  
Pressure Coefficient ◽  
Experimental Results ◽  
Characteristic Parameters ◽  
Thermal Pressure

Abstract The density, thermal expansion coefficient, and thermal pressure coefficient for polyisobutylene of mol wt 40,000 have been accurately determined from 0 to 150°. Results are compared with the reduced equation of state employed in the theory of solutions. The characteristic parameters v*, T*, and p* required for the treatment of polyisobutylene solutions are obtained from the experimental results.

Temperature and pressure dependence of the volumetric properties of binary mixtures containing polyhaloalkanes

1999 ◽  
Vol 77 (12) ◽  
pp. 2046-2052 ◽  
Author(s):  
Carmen Jarne ◽  
Manuela Artal ◽  
José Muñoz Embid ◽  
Inmaculada Velasco ◽  
Santos Otín
Keyword(s):  
Thermal Expansion ◽  
Binary Mixtures ◽  
Isothermal Compressibility ◽  
Excess Volume ◽  
Excess Molar Volumes ◽  
Thermal Expansion Coefficients ◽  
Expansion Coefficients ◽  
Temperature And Pressure ◽  
Density Excess ◽  
Volume Thermal Expansion Coefficient

Densities of binary mixtures of 1,1,2-trichlorotrifluoroethane + dibromomethane, + bromochloromethane, or + bromotrichloromethane were measured over their entire composition ranges at 288.15 and 308.15 K. Thermal expansion coefficients (α) and excess molar volumes (VEm) were calculated. Moreover, densities at 298.15 K and pressures up to 80 bar (1 bar = 100 kPa) were determined for these same mixtures. Isothermal compressibilities (KT) of the pure liquids and their mixtures were obtained.Key words: density, excess volume, thermal expansion coefficient, isothermal compressibility.

scholarly journals Thermodynamic properties of standard seawater

2009 ◽  
Vol 6 (1) ◽  
pp. 689-722 ◽  
Author(s):  
J. Safarov ◽  
F. Millero ◽  
R. Feistel ◽  
A. Heintz ◽  
E. Hassel
Keyword(s):  
Equation Of State ◽  
Thermodynamic Properties ◽  
Internal Pressure ◽  
Isothermal Compressibility ◽  
Pressure Coefficient ◽  
Standard Uncertainty ◽  
Volumetric Properties ◽  
Distilled Water ◽  
Thermal Pressure ◽  
Higher Temperature

Abstract. (p, ρ, T) data of standard seawater with practical salinity S≈35 (corresponding to an absolute salinity SA≈35.16504 g/kg) measured at T=(273.14 to 468.06) K and pressures up to p=140 MPa are reported with an estimated experimental relative combined standard uncertainty of 0.006% in density. The measurements were made with a newly constructed vibration-tube densimeter. The system was calibrated using double-distilled water, methanol and aqueous NaCl solutions. An empirical correlation for the density of standard seawater has been developed as a function of pressure and temperature. This equation of state was used to calculate other volumetric properties such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient, internal pressure and secant bulk modulus. The results can be used to extend the present equation of state of seawater to higher temperature as a function of pressure.

scholarly journals Apparent molar volumes, Vф, of calcium acetate (Ca(Ch3COO)2(aq)) at 273.15 to 353.15 K and pressures up to 100 MPa

2018 ◽  
Vol 83 (9) ◽  
pp. 1005-1016
Author(s):  
Duygu Uysal-Ziraman ◽  
Javid Safarov ◽  
Özkan Doğan ◽  
Egon Hassel ◽  
Bekir Uysal
Keyword(s):  
Equation Of State ◽  
Pressure Coefficient ◽  
State Parameter ◽  
Calcium Acetate ◽  
Apparent Molar Volumes ◽  
Expanded Uncertainty ◽  
Thermal Pressure ◽  
Molar Volumes ◽  
Wide Range ◽  
Tube Density

Pressure, density and temperature (p, ?, T) data and apparent molar volumes, V?o, of aqueous calcium acetate solutions Ca(CH3COO)2(aq) over a wide range of temperatures from 273.15 to 353.15 K, pressures up to p = 100 MPa and molalities m, of 0.04918, 0.09367, 0.23797, 0.36365, 0.85923, 1.06930, 1.35223 and 1.81668 mol?kg-1 of Ca(CH3COO)2 are reported. The combined expanded uncertainty of the density (?) measurements at the 95 % confidence level with a coverage factor of k = 2 was estimated to be Uc(?) = ?0.3 kg?m?3. The measurements were realized with an Anton Paar DMA HPM vibration tube density meter. The system was calibrated using double-distilled water, aqueous NaCl solutions, methanol, toluene and acetone. An equation of state for fitting of the (p, ?, T) data of aqueous calcium acetate was developed as a function of pressure, temperature and molality. After a thorough analysis of literature values and validity of the constructed equation of state, various thermophysical properties, such as isothermal compressibility, isobaric thermal expansibility, differences in isobaric and isochoric heat capacities, thermal pressure coefficient and internal pressure at the investigated state parameter intervals were calculated.

Sign in / Sign up

Export Citation Format

Share Document