ДОСЛІДЖЕННЯ ТЕПЛОФІЗИЧНИХ ХАРАКТЕРИСТИК ТЕПЛОАКУМУЛЯЦІЙНОГО МАТЕРІАЛУ.

А. В., Коник; Г. В., Декуша

The use of thermal storage materials (TSM) in heat storage systems and thermal accumulators gives impetus to the search for new storage fluids with certain technical characteristics that will meet individual operating conditions. The search for the components of heat-accumulating material and its technical characteristics is a current subject of research in modern thermal energy. Particular attention is paid to TSMs working with low-potential energy sources, which corresponds to the development of the carbon-free energy concept. The paper presents the results of experimental research of pH and density of heat-accumulating material used in a prototype of a mobile thermal accumulator MTA-0.5 MW, created by state order at the Institute of Engineering Thermophysics of National Academy of Sciences of Ukraine. Thermal storage material consists of substances that are widely represented on the Ukrainian market, it is non-toxic, explosion- and fire-proof and environmentally friendly. The study was carried out using standard methods. Four samples were selected for research: water (control sample), TSM before using and after two and four heating seasons, selected from a capacitive-type battery of the prototype MTA-0.5 MW. The obtained results of changes in pH and density indicate the feasibility of applying heat-accumulating materials based on multifunctional powders in the temperature range from 20 to 90°С, since liquids remain neutral and changes in density occur within 1-2%. Consequently, according to the obtained indicators, pH and density have no restrictions during the operation of mobile energy storage MTA-0.5 MW and the thermal storge material does not require replacement for at least 4 heating seasons.

ENERGY development; ENERGY storage; HEAT regenerators; POWDERS; DENSITY; HEAT storage

Scientific Works, 2024, Vol 87, Issue 1, p57

2073-8730

Academic Journal

10.15673/swonaft.v88i1.2961