Title

ДОСЛІДЖЕННЯ НИЗЬКОТЕМПЕРАТУРНИХ ПРОЦЕСІВ ОПРІСНЕННЯ ВОДИ.

Authors

В. П., Мординський; А. К., Бурдо; Я. О., Фатєєва; В. П., Грещук

Abstract

The work shows the relevance of the problem of separation of multicomponent solutions both in the processes of water preparation and water purification, as well as in food technologies. The main methods of extracting water from food liquids are analyzed. The main approaches to simplifying this process from the energy point of view and in terms of time costs are proposed. An analysis of block freezing installations was carried out. The kinetics of ice block formation was studied. The main shortcomings of the freezing process were revealed. Ways of improving block freezing units that will help solve these problems are proposed. Ways of reducing energy consumption and intensifying the process of ice block formation are substantiated. It is shown that energy efficiency increases when recycling ice, using its energy to supercool the refrigerant before throttling. The intensification of the crystallization process takes place due to the effect of the "thermal paradox". It is stated that with a certain agreed design and operating parameters, there is a decrease in thermal resistance in the chain "refrigerant - surface of the crystallizer - solution". A method of calculating block freezing units for water desalination problems is proposed. The calculation algorithm is based on the phase transition number and the diffusion Froude number. Data on modeling of low-temperature water desalination processes have been systematized. The main tasks of calculation, experiment and optimization of the block freezing process were identified. The results of experimental and analytical modeling of water desalination processes are given. The results of research that allow determining rational modes of organization of salt water desalination processes in block freezing devices are presented.

Subjects

PHASE transitions; WATER purification; SALINE waters; FROUDE number; ENERGY consumption; SALINE water conversion

Publication

Scientific Works, 2024, Vol 87, Issue 1, p122

ISSN

2073-8730

Publication type

Academic Journal

DOI

10.15673/swonaft.v88i1.2971