IMPLEMENTATION OF AN INTEGRATED SYSTEM OF INTERMITTENT HEAT SUPPLY FOR EDUCATIONAL INSTITUTIONS
Abstract
A review of the current world state of application of various heat supply regimes for public buildings is conducted. The efficiency analysis of the use of various renewable energy sources in combined heat supply systems is analyzed. An integrated heat supply system with successive heating of the coolant from low-potential renewable sources of heat (solar system) to high-temperature traditional heat sources (gas and pellet boilers) is developed. A mathematical model of the integrated heat supply system using renewable sources of heat is proposed. This model can be used to simulate the processes of heating rooms in the intermittent heat supply mode.
The dynamics of heating of premises with various heating devices: with natural convection (radiator) and forced convection (fan coils) is carried out. During the heating season (2016–2017), the operation modes of integrated systems of alternative intermittent heat supply (ISAIHS) are studied.
These studies are extremely relevant for solving the issues of rational use of energy resources. The proposed solutions show that the most effective use of renewable sources of heat can be only in an integrated approach to solving this issue. Also it should be noted the interaction of ISAIHS components: the heat source – the heating system – the characteristics of the building – the operating modes of the premises.
As a result of the research, the boundaries of the effective use of various heat generators in ISAHS are established. The influence of the type of heating devices and insulation of internal walls on the effectiveness of ISAIHS operation is revealed. The full-scale tests of a pilot installation of an integrated heat supply system are carried out.
The obtained results will help to use heat sources more efficiently with a two-period operation regime for new houses. This can be used to improve the energy efficiency of existing buildings.
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References
Pro prioritetni napryamki rozvutku nauki i tehniki (2001). Verkhovna Rada Ukrainy, No. 2623-III. Available at: http://zakon0.rada.gov.ua/laws/show/2623-14
Zakon Ukrainy pro enerhozberezhennia: 74/94 vid 1.07.1994 r. (1994). Zakony Ukrainy, 7, 281–291.
Denysova, A. E., Bodnar, I. A., Denysova, A. S. (2015). Heat pump using subsoil waters as low temperature heat source. Problemele energeticii regionale termoenergetica, 2 (28), 67–75.
Denysova, A. E., Mazurenko, A. S., Denysova, A. S. (2016). Installation of potable water supply and heat supply at base of subsoil water. Renewable Energy and Environmental Sustainability, 1, 43. Available at: http://www.rees-journal.org/articles/rees/pdf/2016/01/rees160046-s.pdf doi: 10.1051/rees/2016046
Renewable energy in Europe (2016). Recent growth and knock-on effects. European Environment Agency. Report, 4, 73.
Guelpa, E., Barbero, G., Sciacovelli, A., Verda, V. (2017). Peak-shaving in district heating systems through optimal management of the thermal request of buildings. Energy, 137, 706–714. doi: 10.1016/j.energy.2017.06.107
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: 10.15587/1729-4061.2017.92495
Chwieduk, D. (2014). Solar energy in buildings. Academic Press, 4, 352.
Ziemele, J., Gravelsins, A., Blumberga, A., Blumberga, D. (2017). Sustainability of heat energy tariff in district heating system: Statistic and dynamic methodologies. Energy, 137, 834–845. doi: 10.1016/j.energy.2017.04.130
Schweiger, G., Rantzer, J., Ericsson, K., Lauenburg, P. (2017). The potential of power-to-heat in Swedish district heating systems. Energy, 137, 661–669. doi: 10.1016/j.energy.2017.02.075
Li, J., Fang, J., Zeng, Q., Chen, Z. (2016). Optimal operation of the integrated electrical and heating systems to accommodate the intermittent renewable sources. Applied Energy, 167, 244–254. doi: 10.1016/j.apenergy.2015.10.054
Balasanian, G. A., Minyalo, M. B., Klymchuk, A. A. (2015). Modelirovanie rezima prerivistogo otoplenie kombinirovanie sistemi teplosnabzenia s teplovim nasosom. Vestnik NTU “HPI”, 17, 97–102.
Denysova, A. E., Mazurenko, A. S., Denysova, A. S. (2014). Efficiency of multi-module solar collectors as the prefix to the boiler. Journal of theAcademy of Sciences of Moldova “Problemele energeticii regionale. Seria Termoenergetica”, 3 (26), 53–59.
Liubarets, O., Borisenko, K., Domoshchey, T., Zaitsev, O. (2017). Particular Systems for Periodic Heating of Tourist Complexes. Ventyliatsiia, osvitlennia ta teplohazopostachannia, 22, 21–25
Nagornaya, A. N. (2008). Matematicheskoe modelirovanie i issledovanie nestacionarnogo teplovogo rezima zdaniy. Chelyabinsk, 150.
Sokolov, V. Y., Mitrofanov, S. V., Sadchikov, A. V. (2016). Energosberezenie v systemah zizneobespecheniya. Novosybirsk: Izd. “SibAK”, 178.
Panferov, V. I., Anisimova, E. Y. (2008). Analiz vozmoznosti ekonomii teplovoy energii pri prerivistom rezime otoplenia. Vestnik YUrGU. Seria “Stroitelstvo i arkhitektura”, 6 (12), 30–37.
Klimchyk, O. A. (2017). Kompleksnyi pidkhid do rishennia pytan pidvyshchennia efektyvnosti system teplopostachannia v zakladakh osvity. Informatsiini tekhnolohii: nauka, tekhnika, tekhnolohiia, osvita, zdorov‘ya. (MicroCAD-2017). Kharkiv: NTU "KhPI", 32.
Kucenko, A. C., Kovalenko, S. V., Tovaznianskiy, V. I. (2014). Analiz energoeffektivnosti preryvistogo rezhima otopleniya zdaniya. Polzunovskiy vestnik, 1 (4), 247–253.
Vasiliev, G. P., Lichman, V. A., Peskov, N. V. (2010). Chislenniy metod optimizacii prerivistogo rezima otoplenia. Matematicheskoe modelirovanie, 22 (11), 123–130.
Copyright (c) 2018 Oleksandr Klymchuk, Alla Denysova, Gennadiy Balasanian, Saad Aldin Alhemiri, Krystyna Borysenko
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