THEORETICAL AND EXPERIMENTAL INVESTIGATION OF THE EFFICIENCY OF THE USE OF HEAT-ACCUMULATING MATERIAL FOR HEAT SUPPLY SYSTEMS

Oleksandr Klymchuk, Alla Denysova, Aleksandr Shramenko, Krystyna Borysenko, Lidiia Ivanova

Abstract


As a result of research, the conditions for the effective use of the volume of heat accumulator based on solid materials were determined. In the course of research, various schemes of the device of tubular heating elements for charging the channel elements of the heat accumulator were considered. Fire clay was used as a heat-accumulating material, capable of operating in a wide temperature range (up to 600 °С). Mathematical modeling of temperature change in the process of discharge over the cross section of the heat-accumulating unit has been carried out. Mathematical modeling was carried out using an application package that allows to obtain the temperature distribution over the cross section of the heat accumulator at key points of its work. The obtained simulation results were tested on an experimental setup consisting of four heat-accumulating units during the charging process and during the discharge of the heat accumulator. According to the research results, the most effective layout of the heating elements was determined, which allows to make the most of the volume of the heat-accumulating material. The dependencies to determine the exponent and the averaging coefficient of the heat flux are also found, which allow a more rational use of the volume of the accumulating nozzle.

The research results can be used to reconstruct decentralized heat supply systems for both residential buildings and public buildings. This will significantly align the schedule of electricity consumption during the day and reduce the consumption of hydrocarbon fuels.


Keywords


heat supply system; heat accumulator; electric load schedule; non-stationary heat transfer; tubular heating elements

Full Text:

PDF

References


Enerhetychna stratehiya ukrainy na period do 2035 roku «Bezpeka, enerhoefektyvnist, konkurentospromozhnist» (2015). Verkhovna Rada Ukrainy. Kyiv, 66.

Bozhko, V. M., Gromadskiy, Yu. S., Krukovskiy, P. G., Timchenko, N. P., Rozinskiy, D. I. (2001). Sovremennoe sostoyanie i perspektivy razvitiya elektrootopleniya v Ukraine. Promislova elektroenergetika ta elektrotekhnіka, 3, 18–21.

Himenko, A. V., Tarasova, V. A. (2013). Issledovanie rezhimov raboty elektricheskogo teplovogo akkumulyatora. Intehrovani tekhnolohiyi ta enerhozberezhennia, 2, 136–139.

Nedbaylo, A. N. (2004). Eksperimental'naya ustanovka po issledovaniyu gruntovogo akkumulyatora teploty. Promyshlennaya energetika, 26 (6), 182–185.

Sotnikova, O. A., Turbin, B. C., Grigor'ev, V. A. (2003). Akkumulyatory teploty teplogeneriruyuschih ustanovok sistem teplosnabzheniya. Zhurnal «AVOK», 5, 40–44.

Mazurenko, A. S., Klimchuk, A. A., Yurkovskiy, S. Yu., Omeko, R. V. (2015). Development of the scheme of combined heating system using seasonal storage of heat from solar plants. Eastern-European Journal of Enterprise Technologies, 1 (8 (73)), 15–20. doi: https://doi.org/10.15587/1729-4061.2015.36902

Mazurenko, A., Denysova, A., Balasanian, G., Klymchuk, O., Tsurkan, A. (2018). Construction of methods to improve operational efficiency of an intermittent heat supply system by determining conditions to employ a standby heating mode. Eastern-European Journal of Enterprise Technologies, 6 (8 (96)), 25–31. doi: https://doi.org/10.15587/1729-4061.2018.148049

Macevityy, Yu. M., Ganzha, N. G., Himenko, A. V. (2011). Ocenka energeticheskoy effektivnosti sistem teploakkumulyacionnogo otopleniya administrativnyh zdaniy. Energosberezhenie, energetika, audit, 10, 9–16.

Mazurenko, A., Denysova, A., Balasanian, G., Klimchuk, A., Borysenko, K. (2017). Improving the operation modes efficiency in heat pump systems of hot water supply with the two-stage heat accumulation. Eastern-European Journal of Enterprise Technologies, 1 (8 (85)), 27–33. doi: https://doi.org/10.15587/1729-4061.2017.92495

Patankar, S. V.; Yan'kov, G. G. (Ed.) (2003). Chislennoe reshenie zadach teploprovodnosti i konvektivnogo teploobmena pri techenii v kanalah. Moscow: Izdatel'stvo MEI, 312.

Еvtyukova, I. P., Kacevich, L. S., Nekrasova, N. M., Svenchanskiy, A. D.; Svenchanskiy, A. D. (Ed.) (1982). Elektrotekhnologicheskie promyshlennye ustanovki. Moscow: Energoizdat, 400.

Еgorov, V. I. (2006). Tochnye metody resheniya zadach teploprovodnosti. Sankt-Peterburg: SPb GU ITMO, 48.

Gallager, R. (1984). Metod konechnyh elementov. Osnovy. Moscow: Mir, 428.

Wu, C., Nikulshin, V. (2000). Method of thermoeconomical optimization of energy intensive systems with linear structure on graphs. International Journal of Energy Research, 24 (7), 615–623. doi: https://doi.org/10.1002/1099-114x(20000610)24:7<615::aid-er608>3.0.co;2-p

Ganzha, A. M., Zaiets, O. M., Marchenko, N. A., Kollarov, O. Ju., Njemcev, E. M. (2018). Methodology of calculation of multiplex heat exchang apparatus with cross flow and mixing in heat carriers. Journal of new technologies in environmental science, 2 (1), 26–35.




DOI: http://dx.doi.org/10.21303/2461-4262.2019.00901

Refbacks

  • There are currently no refbacks.




Copyright (c) 2019 Oleksandr Klymchuk, Alla Denysova, Aleksandr Shramenko, Krystyna Borysenko, Lidiia Ivanova

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN 2461-4262 (Online), ISSN 2461-4254 (Print)