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Technology Review: Does Car-Mounted Solar Make Sense? - 0 views

    Last week, the Japanese newspaper Nikkei caused a buzz by reporting that a redesigned Toyota Prius, to be released next year, will come equipped with solar panels. Toyota spokespeople will neither confirm nor deny the report, but several companies already offer solar roof kits for the Prius, and researchers at the U.S. Department of Energy's National Renewable Energy Laboratory (NREL), in Golden, CO, have been testing one on a Prius modified to plug into the electrical grid.
    I hope the lifetime of the car will also be extended to the lifetime of the solar system? But seriously, it's hard to see the logic here.
Hans De Keulenaer

Research - 0 views

  • The effects of combined driving and vehicle-to-grid (V2G) usage on the lifetime performance of relevant commercial Li-ion cells were studied. We derived a nominal realistic driving schedule based on aggregating driving survey data and the Urban Dynamometer Driving Schedule, and used a vehicle physics model to create a daily battery duty cycle. Different degrees of continuous discharge were imposed on the cells to mimic afternoon V2G use to displace grid electricity. The loss of battery capacity was quantified as a function of driving days as well as a function of integrated capacity and energy processed by the cells. The cells tested showed promising capacity fade performance: more than 95% of the original cell capacity remains after thousands of driving days worth of use. Statistical analyses indicate that rapid vehicle motive cycling degraded the cells more than slower, V2G galvanostatic cycling. These data are intended to inform an economic model.
Infogreen Global

British researchers to develop solar energy harvesting technology at nannoscale - 2 views

    Provided new innovative methods of energy capture and storage are discovered, developed and exploited rapidly, the sun could provide sufficient energy to make up the shortfall. Nanoscale technologies can enable new solar energy harvesting solutions through the generation of novel materials that can be deployed to deliver commercially attractive efficiencies at a low cost and a reasonable lifetime of service.
Hans De Keulenaer

Germany on the Verge of a Subsidy for Energy Storage - 1 views

  • The energy storage system is meant to be used in tandem with distributed solar installations with storage systems developed in Germany; the funds come with a maximum size requirement of 30 kilowatts. The batteries must have a warranty of at least seven years to gain the subsidy. Another requirement is that the PV installation sends 60 percent of its capacity to the grid over the lifetime of the plant. The battery subsidies will apply retroactively when connected to solar systems installed in 2013, according to reports in PV Magazine.
Colin Bennett

Filters For Photovoltaic Applications - 2 views

  • Installed between the PV inverter and the solar panel, DC filters helps to meet EMC directives in grip-connected installations. FEDC Series have been designed to reduce conducted emissions towards the solar panel, to reduce EMI radiations from the solar panel, allowing a longer solar panel lifetime. All together, this scheme increases installation service life.

The Energy Blog: New Brushless Generator Improves Wind Turbine Reliability - 0 views

  • In the majority (more than 90%) of newly-installed wind turbines in the world, generation is from a doubly-fed slip-ring induction generator (DFIG). There are drawbacks to the use of slip-ring generators, particularly the additional cost and bulk of a machine which incorporates slip-rings and the need to maintain brush-gears including replacement of the brushes on a regular basis.
    Wind Technologies Ltd, the result of a collaboration between Dr Richard McMahon at Cambridge University and Prof Peter Tavner at Durham University has developed the Brushless Doubly-Fed Generator (BDFG), a new maintenance-free generator which doubles the lifetime of generators in wind installations and significantly reduce maintenance costs and increase reliability.
Colin Bennett

LED streetlights perform best overall, say engineers - 0 views

  • /* */ display_advert(in_article_array, 'in_article_10','','','','',''); Light-emitting diode (LED) streetlights perform best overall in terms of energy efficiency, lifetime, environmental impact and costs, according to the first comprehensive analysis by US engineers.
Hans De Keulenaer

New funding for small business loans - 0 views

  • The Scottish Government’s small business loans scheme offers interest free loans of up to £100,000 to help save energy or install renewable energy technologies. Over 100 Small and Medium-sized Enterprises (SMEs) have already taken loans worth £2.5 million this financial year, the most in any one year since the scheme started in 2008, with estimated lifetime energy savings of 30,000 Megawatt hours.
Hans De Keulenaer

Solar Planes, Trains and Automobiles | celsias° - 0 views

  • And that's not all. We reported recently on this site on the solar powered car making its way around the world. We also covered the concept of solar roads to capture usable energy. We even reported on a sail boat powered with a solar sail. Now the BBC reports   that the U.S. military has held a test run in Arizona of a UK-made solar plane, the Zephyr-6. The plane flew for more than three days, running at night on solar charged batteries. The more than 83 hour non-stop flight was the longest of any unmanned aircraft.
    Does it make sense to solar power everything? It leads to many small, and relatively expensive installations. Wouldn't it be more effective to go for a battery & plug-in concept where possible. One would loose the inflight recharging of the solar airplane, but for everything else, the plug-in concept probably provides benefits.
    In addition, the lifetime of cars, for example, is much lower than the one for solar panels. Why integrate both?
    Yes, I agree that there is too much emphasis on the novel in attempt to solve climate change. Creating technology for the designer label market to sell goods to the rich who want to tell their friends they are green. The same investment in a solid developed renewable method could yield a hundred times the reduction of carbon or more...
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