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Life Cycle Analysis of a Geothermal Power Plant: Comparison of the Environmental Performance with Other Renewable Energy Systems
Article

LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant

1
Department of Industrial Engineering, University of Florence, 50134 Firenze FI, Italy
2
Department of Economics, Engineering, Society and Business Organization, University of Tuscia, 01100 Viterbo, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Miguel Ángel Reyes Belmonte
Sustainability 2021, 13(4), 1935; https://doi.org/10.3390/su13041935
Received: 2 December 2020 / Revised: 5 February 2021 / Accepted: 5 February 2021 / Published: 11 February 2021
(This article belongs to the Special Issue Sustainability of Geothermal Energy Conversion—Life Cycle Analysis)
This study deals with the life cycle assessment (LCA) and an exergo-environmental analysis (EEvA) of the geothermal Power Plant of Hellisheiði (Iceland), a combined heat and power double flash plant, with an installed power of 303.3 MW for electricity and 133 MW for hot water. LCA approach is used to evaluate and analyse the environmental performance at the power plant global level. A more in-depth study is developed, at the power plant components level, through EEvA. The analysis employs existing published data with a realignment of the inventory to the latest data resource and compares the life cycle impacts of three methods (ILCD 2011 Midpoint, ReCiPe 2016 Midpoint-Endpoint, and CML-IA Baseline) for two different scenarios. In scenario 1, any emission abatement system is considered. In scenario 2, re-injection of CO2 and H2S is accounted for. The analysis identifies some major hot spots for the environmental power plant impacts, like acidification, particulate matter formation, ecosystem, and human toxicity, mainly caused by some specific sources. Finally, an exergo-environmental analysis allows indicating the wells as significant contributors of the environmental impact rate associated with the construction, Operation & Maintenance, and end of life stages and the HP condenser as the component with the highest environmental cost rate. View Full-Text
Keywords: geothermal energy; district heating system; Life cycle assessment (LCA); Life cycle environmental impacts; comparison of LCIA methods; exergo-environmental analysis geothermal energy; district heating system; Life cycle assessment (LCA); Life cycle environmental impacts; comparison of LCIA methods; exergo-environmental analysis
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MDPI and ACS Style

Colucci, V.; Manfrida, G.; Mendecka, B.; Talluri, L.; Zuffi, C. LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant. Sustainability 2021, 13, 1935. https://doi.org/10.3390/su13041935

AMA Style

Colucci V, Manfrida G, Mendecka B, Talluri L, Zuffi C. LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant. Sustainability. 2021; 13(4):1935. https://doi.org/10.3390/su13041935

Chicago/Turabian Style

Colucci, Vitantonio, Giampaolo Manfrida, Barbara Mendecka, Lorenzo Talluri, and Claudio Zuffi. 2021. "LCA and Exergo-Environmental Evaluation of a Combined Heat and Power Double-Flash Geothermal Power Plant" Sustainability 13, no. 4: 1935. https://doi.org/10.3390/su13041935

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