Katherine Ortegon - PhD Defense Announcement April 3, 2014 11:00 AM YOUNG Hall B-64 Ecological Sciences and Engineering Civil Engineering Abstract Circular manufacturing calls for the value embedded in materials, products, and processes to be recovered and reintroduced into the manufacturing enterprise. The end-of-use (EOU) management of wind turbines has received little attention. The value proposition at EOU is not well understood. To date, renewables represent 12% of the total U.S electricity generation capacity. Within renewable power sources, wind energy has the second largest share after hydro and provides 3.5% of the total U.S electricity demand. Their environmental benefits have been limited to green energy generation. With close to 46,000 units installed nationwide, planning in advance for the recovery of value at EOU is required to maximize environmental and economic benefits. Three by-products can be obtained when recovering used WTs: remanufactured WTs, remanufactured subsystems, and recycled materials. Remanufacturing the entire WT offers the largest economic benefits. The installed cost of a remanufactured WT is around 58% of the cost of a new WT with a shorter lead time of six months. The cost of electricity could be reduced to $32/MWh, getting closer to industry goal of $30/MWh. Extending the life of the WT 15-20 years, represents reduced CO2 emissions of between 32,002 and 66,330 tons and water consumption of 75.56 to 228 million liters when a WT is compared to conventional power systems using natural gas and coal respectively. See the attachment for complete details. Thank you, Christal Musser Program Coordinator Ecological Sciences and Engineering Office of Interdisciplinary Graduate Programs The Purdue University Graduate School | Purdue University Ernest C. Young Hall, Room B-40 | 155 S. Grant Street | West Lafayette, IN 47907 Email: musser@purdue.edu<mailto:musser@purdue.edu> | Web: www.purdue.edu/ese<http://www.purdue.edu/ese> Phone: 765-494-2102 | Fax: 765-496-6271 Like us on Facebook<https://www.facebook.com/?sk=welcome#!/ESEatPurdue>