THERMAL SCIENCE

International Scientific Journal

APPLYING THE ECONOMETRIC MODELLING ON THE MONITORING OF WOOD ENERGY CONSUMPTION IN HOUSEHOLDS: CASE STUDY SOUTHWESTERN SERBIA

ABSTRACT
This paper focuses on two main research topics: the situation in the field of wood energy efficiency utilization in households in the region of Southwestern Serbia, and econometric modelling of wood energy consumption dependent on the size of the heating surface, the existence of thermal insulation on residential buildings, the age of heating appliances and moisture content of wood fuels. The results of the conducted research showed that the consumption of wood energy in most household’s ranges between 300 and 400 kWh/m2. This is considered energy inefficient. Although in the majority of households the size of the heating surface ranges between just 20 and 80 m2, exactly in these households the highest and the most inefficient consumption of wood energy expressed in kWh/m2 was registered. The first reason for the high consumption of wood energy is the fact that only 29% of residential buildings have thermal insulation, while 71% do not have any thermal insulation. Additionally, the wide diffusion of heating appliances aging over ten years and firewood with the average moisture content of 37% further contribute to such unfavourable situation in terms of energy efficiency. The parameters of the obtained econometric model of wood energy consumption clearly show that the greatest savings in the consumption of wood energy in the short term could be obtained by improving the condition of the thermal insulation of the residential buildings, replacing the old heating appliances with the new and the more efficient ones, as well as by using drier firewood.
KEYWORDS
PAPER SUBMITTED: 2020-01-18
PAPER REVISED: 2020-03-26
PAPER ACCEPTED: 2020-03-30
PUBLISHED ONLINE: 2020-05-02
DOI REFERENCE: https://doi.org/10.2298/TSCI200118173G
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE 6, PAGES [4197 - 4208]
REFERENCES
  1. Glavonjić, B., Pisek, R., Jović, D., WISDOM Serbia: Spatial wood fuels production and consumption analysis, FAO, Rome, 2015. Avalable at: www.fao.org/3/a-i4394e.pdf
  2. GIZ DKTI Programme: Efficiency of Firewood Utilization in Households in the Pilot Regions in Serbia, Available at: www.bioenergy-serbia.rs/index.php/en/giz-dkti-programme, E4Tech/Quiddita, Belgrade, (January 2020)
  3. Position paper: Status of Using Wood Biomass for Energy Purposes in Serbia, GEF UNDP project, Belgrade, Available at: biomasa.undp.org.rs/wp-content/uploads/2018/11/POSITION-PAPER-Status-of-Using-Wood-Biomass-for-Energy-Purposes-in-Serbia-FINAL.pdf
  4. Dzian, M., Paluš, H., Parobek, J., Šupin, M., Factors affecting the supply of energy wood in Slovakia, Proceedings, 11th International Scientific Conference WoodEMA, Belgrade, Serbia, 2018, pp. 347-353
  5. Paluš, H., Changes in energy wood supplies in the Slovak Republic, Proceedings, 8th International Scientific Conference WoodEMA and Forest Products Society, Dubrovnik, Croatia, 2015, pp. 261-266
  6. Glasenapp, S., Aguilar, F., Weimar,H., Mantau,U., Assessment of residential wood energy consumption using German household-level data, Biomass and Bioenergy, 126 (2019), Elsevier, pp. 117-129
  7. Song, N. Aguilar, F., Shifley, S., Goerndt, M., Factors affecting wood energy consumption by U.S. households, Energy Economics, 34 (2012), Elsevier, pp. 389-397, Available at: www.nrs.fs.fed.us/pubs/jrnl/2012/nrs_2012_song_001.pdf
  8. Glavonjić, B. D. et al., Consumption of Wood Fuels in Households in Serbia - Present state and possible contribution to the climate change mitigation, Thermal Science, 15 (2011), 3, pp. 571-585
  9. Ranković, N., Ekonomika šumarstva, Univerzitet u Beogradu-Šumarski fakultet, 1996
  10. Jovičić, M., Dragutinović-Mitrović, R., Ekonometrijski metodi i modeli, Ekonomski fakultet, Beograd, 2018
  11. Muravljov, M., Gradevinski materijali, Gradevinska knjiga, Beograd, 2007
  12. Pravilnik o energetskoj efikasnosti zgrada, Sl. Glasnik RS br. 61/2011, Available at www.paragraf.rs/propisi_download/pravilnik_o_energetskoj_efikasnosti_zgrada.pdf
  13. GIZ DKTI Programme: Report on efficiency measurements of residential heating and cooking appliances in selected households, E4Tech/Quiddita, Belgrade; Available at: www.bioenergy-serbia.rs/index.php/en/giz-dkti-programme (January 2020)
  14. Glavonjić, B., Drvna goriva: vrste, karakteristike i pogodnosti za grejanje, SNV Montenegro, Podgorica, 2011
  15. Taylor, A., Moisture Content of ‘Seasoned' Firewood, Tennessee Forest Products Center, The University of Tennessee Agricultural Extension Service, USA, 2015

© 2020 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence