Upward solidification of a binary solution saturated porous medium

Song, M.; Choi, Je Yong; Viskanta, R.

doi:10.1016/0017-9310(93)90048-b

Cited by 22 publications

(2 citation statements)

References 9 publications

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“…The average temperature of the porous fluid-saturated slab in the variable volume (H-δ), it is the same as boundary condition (5), is described by the equation:…”

Section: Problem Formulationmentioning

confidence: 99%

Analytical and Experimental Study of the Solidification of a Water in the Horizontal Moisturized Porous Slabs

Partyka,

Lipnicki,

Małolepszy

2024

IJHT

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The aim of the work is to develop a new analytical model of liquid solidification taking into account the phenomenon of free convection in horizontal, fluid-saturated, granular porous plates and to experimentally verify the theory. This model is based on previous theoretical research and experiments of the authors of this work. In order to determine the solidification front, the measuring cylinder method was used, in which the solidification front was determined indirectly by measuring the increase in water volume in a measuring cylinder connected to the test chamber. Based on the analysis of the phenomenon of free convection of water in a porous medium saturated with fluid, the heat transfer coefficient on the solidification surface was determined, which is an important parameter from the point of view of heat transfer. It was also deemed necessary to take into account the anomalous properties of water. The results of theoretical research were compared with the authors' experimental research and presented in pictorial form. Due to the great practical importance of the issue of freezing of the ground and elements of buildings and structures, it is necessary to understand this phenomenon as undesirable for the durability of building structures.

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“…The average temperature of the porous fluid-saturated slab in the variable volume (H-δ), it is the same as boundary condition (5), is described by the equation:…”

Section: Problem Formulationmentioning

confidence: 99%

Analytical and Experimental Study of the Solidification of a Water in the Horizontal Moisturized Porous Slabs

Partyka,

Lipnicki,

Małolepszy

2024

IJHT

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“…Once drawn, the composition of the sample solutions as determined using a refractometer (KernCo Instrument Co.) with an accuracy of ±0.1 wt%. The same technique has also been utilized to assess the undercooling of the interdendritic liquid during the solidification of an NaClH 2 O system [10]. The sampling procedure induced additional flow which disturbed the local transport phenomena and caused uncertainty of unknown magnitude.…”

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confidence: 99%

Experimental diagnostics to determine the local composition of an aqueous copper sulfate solution

Cho

Song

1999

Heat Trans. Asian Res.

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Knowledge of solute distribution is required for improved understanding of double‐diffusive phenomena in which transports of heat and species occur simultaneously. The present paper describes an experimental technique to monitor the local composition of an aqueous copper sulfate solution without resort to a sampling procedure. The method is based on the principles of electrochemistry and employs a copper electrode as a sensing probe. Calibration experiments were conducted with the concentration and temperature of a reference solution fixed at 5 wt% and 25°C, respectively. The regressed equation empirically relates the electric potential difference between working and reference electrodes to the concentration and temperature of the solution that contacts the working electrode. During a double‐diffusion experiment, liquid composition can be determined from the measured values of local temperature and cell potential, with the uncertainty smaller than 0.85 mV for the confidence interval of 99.7%. A series of experiments to determine the best method of preparing the copper electrode has also been performed. For the tested diameter of the electrode (0.75 mm), a constant current of 0.4 mA and plating time of 450 s yield minimum offset in electrode potential. © 1999 Scripta Technica, Heat Trans Asian Res, 28(5): 367–378, 1999

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