Navigation Links
Wind turbine payback
Date:6/16/2014

US researchers have carried out an environmental lifecycle assessment of 2-megawatt wind turbines mooted for a large wind farm in the US Pacific Northwest. Writing in the International Journal of Sustainable Manufacturing, they conclude that in terms of cumulative energy payback, or the time to produce the amount of energy required of production and installation, a wind turbine with a working life of 20 years will offer a net benefit within five to eight months of being brought online.

Wind turbines are frequently touted as the answer to sustainable electricity production especially if coupled to high-capacity storage for times when the wind speed is either side of their working range. They offer a power source that has essentially zero carbon emissions.

Coupled lifecycle cost and environmental assessment in terms of energy use and emissions of manufacturing, installation, maintenance and turbine end-of-life processing seems to be limited in the discussions for and against these devices. "All forms of energy generation require the conversion of natural resource inputs, which are attendant with environmental impacts and costs that must be quantified to make appropriate energy system development decisions," explain Karl Haapala and Preedanood Prempreeda of Oregon State University, in Corvallis.

The pair has carried out a life cycle assessment (LCA) of 2MW wind turbines in order to identify the net environmental impact of the production and use of such devices for electricity production. An LCA takes into account sourcing of key raw materials (steel, copper, fiberglass, plastics, concrete, and other materials), transport, manufacturing, installation of the turbine, ongoing maintenance through its anticipated two decades of useful life and, finally, the impacts of recycling and disposal at end-of-life.

Their analysis shows that the vast majority of predicted environmental impacts would be caused by materials production and manufacturing processes. However, the payback for the associated energy use is within about 6 months, the team found. It is likely that even in a worst case scenario, lifetime energy requirements for each turbine will be subsumed by the first year of active use. Thus, for the 19 subsequent years, each turbine will, in effect, power over 500 households without consuming electricity generated using conventional energy sources.


'/>"/>
Contact: Albert Ang
press@inderscience.com
Inderscience Publishers
Source:Eurekalert

Related biology news :

1. Study shows wind turbines killed 600,000 bats last year
2. High bat mortality from wind turbines
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/4/2017)... VEGAS , Jan. 4, 2017  CES ... performance biometric sensor technology, today announced the launch ... sensor systems, the highly-accurate biometric sensor modules ... biometric technology, experience and expertise. The two ... Benchmark designed specifically for hearables, and Benchmark BW2.0, ...
(Date:12/20/2016)... N.C. and GENEVA, Dec, 20, 2016 /PRNewswire/ ... biometric data sensor technology, and STMicroelectronics ... the spectrum of electronics applications, announced today the ... development kit for biometric wearables that includes ST,s ... with Valencell,s Benchmark™ biometric sensor system. ...
(Date:12/15/2016)... , December 15, 2016 Arvato ... an agreement with NuData Security, an award-winning international ... will enable clients to focus on good customer experience, balancing ... regulation. ... In order to provide a one-stop fraud prevention suite, Arvato ...
Breaking Biology News(10 mins):
(Date:1/24/2017)... ... January 24, 2017 , ... Nanomedical Diagnostics ... for fragment-based screening, will showcase its proprietary Field Effect Biosensing (FEB) ... Screening (SLAS) conference in Washington, D.C. from Feb. 6 to Feb. 8. , ...
(Date:1/24/2017)... ... January 23, 2017 , ... Edward ... first-ever recipient of the National Academy of Sciences Prize in Food and Agriculture ... nutrition. , The annual National Academy of Sciences (NAS) Prize in Food and ...
(Date:1/24/2017)... , Jan. 23, 2017  Today, the Fisher Center ... have funded an important study that could lead to ... onset of Alzheimer,s disease. This groundbreaking research was conducted ... led by Nobel Laureate Dr. Paul Greengard , ... disease. Fisher Center scientists have linked a ...
(Date:1/23/2017)... - Resverlogix Corp. ("Resverlogix" or the "Company") (TSX: RVX) ... Zealand based Phase 1 trial with severe ... in reducing inflamed protein biomarkers in patients with severe ... that this is the first time in medical history ... made between epigenetic regulation and its potential for positive ...
Breaking Biology Technology: