In an inclined fluidized bed, it was studied experimentally how the motion of particles and the heat transfer rate (particle-fluid) are affected by the mechanical vibration added vertically (α₀ω²=0.8-2.48g, N=29.6 c. p. s), using.particles in the range of D_p=0.19-0.835mm, ρ_s=-0.6-4.84g/cm³, and air as fluid.
And then, the following conclusions are obtained:
i) Vibration is particularly effective to fluidize the large or heavy particles, while it is not easy to fluid ize them under a usual condition.
ii) The effect of vibration on the longitudinal trans- On port of particles is able to be estimated as an increase of air velocity.
iii) By applying the concept of imaginary gas velocity (u_g*), the correlation of heat transfer in a non-vibrating system previously shown by the authors can be extended to the heat transfer in a vibrating osystem.

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The results of rigorous numerical solutions are presented to show how the axial discharge and pressure drop and velocity profile become coupled when a non-Newtonian Sutterby model fluid flows through aconcentric annulus. They are compared to the experi-mental data of some high polymer aqueous solutions. The velocity profiles were measured by taking the photographic picture of the locus of the small hydrogen bubbles. The results of the approximate solutione by variational principle were obtained and compared to the results of rigorous numerical solution, and the accuracy of the results by variational principle is investigated. The relation between discharge rates To and pressure drops in a concentric annulus may be predicted by an equation using the experimental data for a circular tube.

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A theoretical calculation to predict thermal con-ductivity of the liquid-solid suspension has been performed, and the results have been compared with the avaliable formulae and experimental results. The models of the former investigations have been rela-tively simplified to carry out their analysis. The authors have newely tried to calculate thermal conductivity considering three dimentional heat flow, Relaxation method has been used to carry out the numerical calculation for the range of 0≤ε0.5, 10^-3≤k_s≤k_c10³. A good agreement has been recognized in the comparison of the calculated results with experimental results.

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Though the effective thermal conductivity of frost layer “λ_f” increased with the increase of the frost layer density, the relationship of them was not obvious, because the thermal conduction in the frost layer was affected not only by the thermal conductivity in solid phase, but also by heat transfer by moisture diffusion in gas phase.
To explain the relationship between λ_f and the frost layer density, a simple model was presented by assuming that the frost layer was consist of frost columns. By introducing λ_f to the model, simultaneous heat and masstransfer phenomena in frost layer could be fairly well simulated. This simulation showed that λ_f was affected mainly by surface temperature of plate covered with frost layer, surface temperature of frost layer and frost layer density.
Moreover, other simple model was presented by assuming that frost layer was consist of ice columns. In this model, character difference of ice columns and frost layer which piled up ice particles complicately, was expressed by correction factor “α₀” contained the irregularity of heat flow path in frost layer, constriction and contact resistance of ice particles. By using this model, λ_f was able to estimate relatively well.

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Enthalpy efficiency was defined from the concept of temperature efficiency in cross-flow heat exchangers. An analytical method was proposed to obtain over-all volumetric enthalpy transfer coefficients in multi-pass counter-cross-flow cooling tower and calculated values were compared with experimental values.
As the result, it was recognized that this analytical method reported in this paper was of good utility for the analysis of multi- unit counter-cross-flow cooling tower.

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Tween-80, the emulsifying agent was dissolved previously in liquid carbontetrachloride. The carbontetrachloride and water were mixed in a baffled stirred tank (tank diameter; 97mm, tank depth;150mm) at 20°C. The experiment was undertaken to find the effects of the volume ratio, the emulsifier concentration, and the impeller speed on the change of droplet-size distribution of emulsion with time and on the occurrence time of phase inversion. As a result, the following conclusions were obtained.
1) Phase inversion occurs during mixing under even a certain value of volume ratio of dispersed phase. A model to explain phase inversion was proposed.
2) The dispersion rate equation to account for dispersion state was proposed. The dispersion rate coefficient was found to depend on the value of volume ratio and emulsifier concentration.

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Solubilities of nitrous oxide and ethylene in aqueous monoethanolamine solutions have been observed at 15°C and 25°C under 1 atm. Considering these results, it is suggested that it may be possible to correlate solubilities of gases in aqueous monoethanolamine solutions in the restricted range of monoethanolamine concentration by similar method proposed by Onda et al. for aqueous electrolyte solutions.

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To obtain the fundamental data required for the new extraction process, we found the temperature characteristics of the solubility of propylene carbonate to water, the mutual solubility curve of the sistem of propylene carbonate-water, and the solubility curves and tie-line data of the system of propylene carbonate-water-acid (hydrochloric, hydrobromic, perchloric, sulphuric, nitric and acetic acid) at 25°C and 50°C.

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It is well known that the channeling phenomenon of gas flow is observed under the operation of low gas flow rate in gas liquid contact perforated plate column. The causes of the phenomenon are discussed in this paper. One of the causes is due to verticalflow perpendicular to the submerged oriffice. This is check with the open channel apparatus, where according as the vertical flow rate becomes smaller, the bubble easily take off from the oriffice.
In the case of perforated plate column, the bubbles take off from the stagnant region of the plate.

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