LIFE CYCLE ASSESSMENT OF HEAT PRODUCTION FROM WILLOW CHIPS OF SALIX VIMINALIS L. IN UKRAINE


  • O.V. Tryboi Institute of Engineering Thermophysics of the National Academy of Sciences of Ukraine, Zhelyabova, 2a, Kyiv, 03680, Ukraine
Keywords: energy crops, willow, Salix Viminalis L., LCA, energy efficiency, GHG, Cumulative Energy Demand, Energy Yield Coefficient, bioenergy heat

Abstract

The results of the life cycle assessment of heat production from willow chips of Salix Viminalis L. are presented. Energy efficiency and greenhouse gas emissions reduction are estimated. The influence of the most significant parameters is analyzed and optimal relationships are determined to ensure maximum energy efficiency and environmental sustainability.

The purpose of the paper is to define the energy efficiency and environmental sustainability of bioenergy value chain for heat production from willow chips of Salix Viminalis in Ukraine. The methodology of Life Cycle Assessment (LCA) was used, according to which, the scope of the product system includes the feedstock cycle of willow Salix Viminalis L. cultivation and harvest, and the subsystem of willow chips conversion to heat in a 500 kW biomass boiler. Cumulative energy demand and energy yield coefficient were chosen as energy efficiency indicators. The product system was compared with the similar one using natural gas. Non- renewable energy yield coefficient was used to define how many times the energy output was bigger than input of non- renewable energy. An acceptable value for renewable energy installations and systems is to receive twice as much energy output as was spent of non-renewable energy, however the recommended value assumed in the work is to receive a 5 times more energy output compared to non-renewable energy input. As an environmental sustainability indicator, a reduction of GHG emissions was used. The acceptable level of GHG emissions reduction was chosen at a level of 60% for the whole life cycle from cultivation-to-heat, compared to traditional heat production in gas boilers. Results of the assessment identified that the most significant parameter affecting energy efficiency and environmental sustainability is transportation distance. The growing of willow Salix Viminalis L. in Ukraine for the subsequent production of biofuel in the form of chips and its combustion in biofuel boilers is environmentally sustainable with a maximum transportation distance of 390 km and energy efficient with a maximum transportation distance of 180 km.

References

1. Enerhetychnyi balans Ukrainy za 2016 rik. [Energy balance of Ukraine for 2016.] (Ukr.) http://ukrstat.gov.ua/ operativ/operativ2017/energ/en_bal/Bal_2016_u.zip
2. Report on Promotion of the Use of Energy from Renewable Sources and Consumption in Ukraine in 2014- 2015 [Electronic resourse] – P.20. Mode of access: https:// www.energy-community.org/dam/jcr:38625929-3c80-4a80878e-0b3791e143e2/UA_RE_progress_2016.pdf (viewed on March 16, 2018)
3. Geletukha G.G., Zheliezna T.A., Tryboi A.V. Perspektivy vyrashhivanija i ispol'zovanija jenergeticheskih kul'tur v Ukraine. Chast' 2 [Prospects for growing and use of energy crops in Ukraine. Part 2] // Promyshlennaya teplotekhnika [Industrial Heat engineering], 2015, V.37, No5, P.58-67. (Rus.)
4. AEBIOM Statistical Report. European Bioenergy Outluk / [Calderon C., Gauthier G., Jossart J.-M. and others]. Brussels: European Biomass Association (AEBIOM), 2017. 264 p. – Mode of access: http://www.aebiom.org/statistical-report-2017/statistical-report-2017-17-10-17
5. Alexopoulou E. Role of 4F cropping in determining future biomass potentials, including sustainability and policy related issues [Electronic resourse] / Alexopoulou E., Christou M., Eleftheriadis I. // [Biomass Department of CRES, 2010-2012]. – P. 8. http://www.biomassfutures.eu/public_docs/final_deliverables/WP3/D3.2%20Role%20of%204F%20crops.pdf
6. Cherubini, F., & Strømman, A. H. (2011). Life cycle assessment of bioenergy systems: state of the art and future challenges. Bioresource technology, 102(2), 437-451.
7. Heller, M., Keoleian, G., Volk, T. Life cycle assessment of a willow bioenergy cropping system. (2003). Biomass Bioenergy, 25, 147–65.
8. Fantozzi, F., Buratti, C. (2010). Life cycle assessment of biomass chains: Wood pellet from short rotation coppice data measured on a real plant. Biomass and Bioenergy, 34, 1796-1804
9. Nussbaumer T. Evaluation of Biomass Combustion based Energy Systems by Cumulative Energy Demand and Energy Yield Coefficient / T. Nussbaumer, M. Oser. – Zurich: Verenum press, 2004. [Electronic resourse] – 47 p. – (Report to International Energy Agency IEA Bioenergy Task 32 and Swiss Federal Office of Energy). Mode of access: http://task32. ieabioenergy.com/wp-content/uploads/2017/03/Nussbaumer_IEA_CED_V11.pdf .
10. Report from the Commission to the Council and the European Parliament on sustainability requirements for the use of solid and gaseous biomass sources in electricity, heating and cooling. [Electronic resourse] – Brussels, 25.2.2010. COM (2010) final. Mode of access: http://eur-lex.europa.eu/legal-content/EN/TXT/?qid=1410874845626&uri=CELEX:52010DC0011
11. Commission staff working document “State of play on the sustainability of solid and gaseous biomass used for electricity, heating and cooling in the EU”. [Electronic resource]. – Brussels, 28.7.2014. SWD (2014) 259 final.
12. Directive 2009/28/EC of the European Parliament and of the Council of 23.04.2009 on the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC.
13. Proposal for a Directive of the European Parliament and the Council on the promotion of the use of energy from renewable sources (recast). – Brussels, 23.2.2017, COM(2016) 767 final/2. Mode of access: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:52016PC0767R(01)
14. Designing technologies and calculating the costs of growing crops [Tutorial, in Ukrainian] / edited by G.Ye. Mazniev. - Kharkiv: "Maidan". - 2009. - 257 p.
15. Zheliezna, T.A., Drozdova, O.I. Kompleksnyj analiz texnologij proizvodstva e'nergii iz tverdoj biomassy v Ukraine [Comprehensive analysis of energy production technologies from solid biomass in Ukraine] // TEPLOE'NERGETIKA [Thermal Engineering], 2014, No4, P. 16-20 (Rus.).

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Published
2018-06-20
How to Cite
Tryboi, O. (2018). LIFE CYCLE ASSESSMENT OF HEAT PRODUCTION FROM WILLOW CHIPS OF SALIX VIMINALIS L. IN UKRAINE. Thermophysics and Thermal Power Engineering, 40(2), 56-64. https://doi.org/https://doi.org/10.31472/ihe.2.2018.08
Section
Renewable Energy Systems