Titel: Wind Power Payback Assessment Scenarios
Författare: Kristin Backström, Elin Ersson
Utgivare: Lunds Tekniska Högskola, Avdelningen för Energihushållning, Institutionen för Energivetenskaper
Årtal: 2008
Ämnesord: Ekonomi
Sökord/Keywords: energy balance, Energy Payback Ratio (EPR), energy use, forest, open field, recycling, scenario, Vestas, V90 3 MW, wind power, wind turbine.
Examensarbete (Pdf)
Sammanfattning/Abstract: This thesis investigates the energy flow for a Vestas V90, 3 MW wind turbine, and provides a proper consideration of all the important input energy values in all their complexity. An analysis of the Energy Payback Ratio (EPR) has been conducted, with special attention being paid to what happens when a wind turbine is placed in different environments (i.e. the open field vs. the forest), and what happens to these scenarios when recycling is applied to the energy balance.
The results of the research demonstrate that the EPR values are highly dependent on the prerequisites chosen. It was found that the wind turbine placed in the open field had more favourable EPR values than the wind turbine in the forest, a result that is dependent upon the road being shorter and this scenario being placed closer to the existing electrical infrastructure. The most energy intensive phase of the energy balance for both scenarios is the manufacturing of the wind turbine. Recycling was added to the energy balance calculations, in order to make this study more realistic. Implementing recycling in the model increased the EPR values for both scenarios, and highlighted the importance of recycling materials.