Netsu Bussei

Specific Heat Capacity Measurements for Thin Plate Specimens by Thermal Radiation Heating

Kumao HISANO, Takashi YAMAMOTO

1993 Volume 7 Issue 1 Pages 2-7
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.2

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A new instrumentation is made for specific heat capacity measurments of thin plate specimens. A specimen is set above a plate-heater in a vacuum chamber. The specimen is heated only by thermal radiation from the heater according to the Stefan-Boltzmann law. The heat capacity is obtained from the heater temperatures for an increase and for a decrease of the specimen temperature.
The simultaneous measurements of specific heat capacity and the dielectric constant are made for ferro-electric ceramics such as PZT ceramics at elevated temperatures. Similarly, measurements of the heat capacity and the electrical resistivity are made for PTC ceramics.

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Application of Minimum Deviation Angle Method to Refractometry of High Temperature Melts

LiNO₃-CsNO₃ Binary System

M. Endo, S. Mizuno, T. Nito, Y. Sato, T. Yamamura, K. Sugimoto

1993 Volume 7 Issue 1 Pages 8-13
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.8

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The minimum deviation angle method has been applied to the refractometry of high temperature melts. The error sources accompanying the measurements have been examined and their effects have been evaluated. The optical window of the prismatic cell made of transparent fused silica results in the most significant error. This work presents a method for the correction of the systematic error caused by this deviation. The refractive indices of LiNO₃-CsNO₃ binary melt were determined with good accuracy over the entire composition range.

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Introduction of a response function method for analysis of functionally gradient materials

Tetsuya BABA

1993 Volume 7 Issue 1 Pages 14-19
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.14

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The conventional laser flash method can not be applied directly to thermal diffusivity measurements of functionaly gradient materials in which thermophysical properties are functions of position vertical to the laminated surface because the standard data analysis algorithm such as “the t_{1 2}-method” assumes homogeneity of the measured Material.
Averaged heat capacity, averaged thermal conductivity and effective thermal diffusivity can be calculated from the response fucntion matrix of the specimen, the four elements of which are temperature history curves of both front and rear surfaces of the specimen after either surface is pulse-wise heated by an extended laser flash method.

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Special Issue on Thermophysical Properties of Fluid Mixtures

T. Takagi

1993 Volume 7 Issue 1 Pages 20
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.20

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[in Japanese]

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PVT Relations for Fluid Mixtures

Kenji Fukuchi, Yoshio Koga, Yasuhiko Arai

1993 Volume 7 Issue 1 Pages 21-25
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.21

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PVT relations of fluid mixtures are reviewed. The statistical thermodynamic fundamentals of equations of states (EOS) are shown. Types of equations of states are classified as (1) van der Waals type and virial expansion EOS, (2) EOS based on the perturbation theory, and (3) EOS based on Monte Cario simulation are explained. The mixing rules required to apply EOS to fluid mixtures are described for both the conventional miring rule and the asymmetric (local mole fraction type) mixing rule. Applicability of EOS to pure fluids and their mixtures are presented.

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Heat capacities of binary mixtures

Sachio Murakami, Hideo Ogawa

1993 Volume 7 Issue 1 Pages 26-30
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.26

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Recently, the Picker type of flow microcalorimeter have been used for measuring heat capacities of binarymixtures and precise heat capacity data of the binary mixtures have been accumulated. Our flow microcalorimeter is described in this review. Our results for some binary mixtures are also discussed.

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Experimental and Estimation Methods of Vapor-Liquid and Liquid-Liquid Equilibria of Fluid Mixtures

Masaru HONGO, Hiroshi INOMATA

1993 Volume 7 Issue 1 Pages 31-35
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.31

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The phase equilibria are widely utilized for separation processes such as distillation, gas absorption, extraction etc. in chemical industries. These process design and development require the more precise equilibrium data. Recent applications of highly accurate experimental and estimation methods concerned with multi-phase vapor-liquid and liquid-liquid equilibria are introduced in this article.

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High-Pressure Solubility of Solid in Water

Seiji Sawamura

1993 Volume 7 Issue 1 Pages 36-40
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.36

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High-Pressure solubility method and data in water are introduced as follows, (1) high-pressure technique, (2) solubility of organic compounds, and (3) solubility of inorganic compounds. Pressure coefficent of the solubility is thermodynamically concerned with the volume change accompanying dissolution of a solute.

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Thermophysical Properties of Mixtures Containing Supercritical Fluids

Hirokatsu Masuoka

1993 Volume 7 Issue 1 Pages 41-45
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.41

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A supercritical fluid (SCF) which is any dense fluid at temperatures above its critical value exhibits unique properties intermediate between gases and liquids. General behaviors and current estimation and experimental methods of thermophysical properties of pure SCF and mixtures containing SCF are reviewed.

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Transport Properties of Fluid Mixtures

Viscosity and Thermal Conductivity

Yoshiyuki Tanaka

1993 Volume 7 Issue 1 Pages 46-51
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.46

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Transport properties of fluid mixtures are sensitively altered with composition. This article introduces the behavior of the viscosity and thermal conductivity of fluid mixtures with temperature, pressure and density. It also reviews briefly the recent development in the estimation methods of the composition dependence of these properties focusing on the law of corresponding state, the residual transport property concept, and the group contribution method.

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Thermophysical Properties and Reactions

Chiaki Yokoyama

1993 Volume 7 Issue 1 Pages 52-56
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.52

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Heat of reactions can give essential information to an analysis of kinetics and also to a reactor design. Therefore, a new type of calorimeter which can be used under a wide range of temperature and pressure is required in various fields. In this report, the details of the calorimeter developed by Kobayashi et al. for the measurement of the heat of hydrate dissociation was described. The other three calorimeters recently reported were also revived.

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Thermophysical Properties of Nonequilibrium-Inhomogeneous Systems

Nonequilibrium System and Dynamical Susceptibility

S. Kojima, Y. Hiki, Y. Kogure

1993 Volume 7 Issue 1 Pages 57-62
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.57

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[in Japanese]

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On Thermodynamic Database MALT2

H. Yokokawa

1993 Volume 7 Issue 1 Pages 63-65
Published: January 30, 1993
Released on J-STAGE: March 16, 2010

DOIhttps://doi.org/10.2963/jjtp.7.63

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