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AUG 05

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In India, Cost of http://cambridgeacademyaz.com/levitra-soft-generic Wind Power Competes with New Coal
Written by Sarah Rich on 05/08/13   

According to viagra overnight delivery a recent report by HSBC Global Research, wind power has become cost competitive with new coal capacity in India. Solar is not far behind; the report also claims it is likely to become cost competitive between 2016 and 2018.

While policies like the reinstatement of the http://www.spotfodo.com/cialis-online-in-usa Generation Based Incentive for wind power projects have made them more financially viable, as HSBC reports, this specific change in the relationship between wind power and 50mg cialis retail price coal-based power can be partially attributed to water shortages. In India, thermal power plants account for almost 90 percent of industrial water demand. Coal-fired power plants use significantly more water than renewables like wind and solar, and water shortages have been affecting coal-based power production in India during the past three years, causing some power plants to close partially during the pre-monsoon season.

India already ranked number five for global wind power capacity as of 2011. While improvements to the power grid infrastructure would be necessary to get new wind power generation sources linked to businesses and homes, this change in relative cost likely coincides with, and perhaps will directly cause, an increase of wind power projects in India. As the HSBC report states, “India currently has 1.2GW of installed solar capacity and over 4GW of capacity is at various stages of tariff bidding. We expect commissioning of selected projects within two years.”

via: IEEE Spectrum

image CC BY 2.0 by brownknows

 

AUG 20

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Fukushima Site Leaking Radioactive Wastewater
Written by Philip Proefrock on 20/08/13   

Radioactive water has been found leaking from storage tanks at the site of the Fukushima reactors which melted down in the wake of viagra where to buy the 2011 tsunami. Three of the eight reactors at the site melted down after cooling systems failed due to damage caused by the tsunami.

Storage tanks have been built near the crippled reactors to store the great quantities of water being used to cool off the nassmc.org damaged reactor cores. The melted reactors will need to be cooled off for years before further decontamination work can take place.

The leak has been classified as a low-level (Level 1) incident, but still, the radioactivity of the leak has been characterized as "equivalent to the limit for accumulated exposure over five years for nuclear workers."

image: CC Attribution-Share Alike 3.0 Unported by KEI at ja.wikipedia

 

SEP 30

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Recycling CDs for Wastewater Treatment
Written by Philip Proefrock on 30/09/13   

Someone has finally come up with an upcycling use for old CD discs. Din Ping Tsai, a physicist at National Taiwan University, has developed a small, low-power method for treating wastewater using UV light and zinc oxide applied to rx viagra 100mg the CDs. Using old CDs as a substrate to coat with zinc oxide provides a low cost layer which can be spun as water is applied, creating a thin film of water which more effectively interacts with the photocatalytic layer of zinc oxide nanorods. In tests, the device was able to break down over 95% of the contaminants after an hour of treatment.

Though this could be a wonderful application for old CDs, it's unlikely to solve the waste accumulation from billions of viagra soft tabs old CDs. The number used for this treatment system, even if it becomes widely adopted, is going to be a tiny fraction of the total production of CDs (which, at present is about 20 billion CDs per year).

"The spinning disk reactor is small, consumes little power, and processes contaminated water more efficiently than other photocatalytic wastewater treatment methods, Tsai says. The device could be used on a small scale to clean water contaminated with domestic sewage, urban run-off, industrial effluents, and farm waste. Going forward, the team is also working on ways to increase the efficiency of the reactor, and Tsai estimates that the system could soon be improved to superactive cialis no presecription work even faster, perhaps by creating layers of stacked disks."

While the system seems best suited to small installations, rather than big, municipal facilities, it is nevertheless an interesting system, and the viagra generic canada ability to also deal with an e-waste issue at the same time as creating equipment for effective wastewater treatemt is a positive synergy.

via: Treehugger

 

SEP 20

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VW Announces Production of Two Electric Cars
Written by Sarah Rich on 20/09/13   

Following up on wow it's great gay levitra expectations, Volkswagen announced the production of two new electric vehicles last week. The 2015 e-up! (exclamation mark included) and the 2015 e-Golf were unveiled at the Frankfurt Motor Show. While both hatchback vehicles contain lithium-ion batteries and electric motors, they have different specs. The smaller of the two, the e-up! runs on a 18.7-kWh lithium-ion battery and contains a 60 kW / 82 PS electric motor capable of cialis soft tabs scam 210 Nm of torque. The e-up! has a driving range of up to 99 miles (159 km), and uses a mere 11.7 kWh per 61 miles.

One of our writers test drove a pilot vehicle of the other EV announced for production: an all-electric version of the Golf. The e-Golf has a 24.2 kWh lithium-ion battery, and a 85 kW/ 115 PS electric motor with a max torque of 270 Nm. It also has a driving range of up to 118 miles (190 km), and uses 12.7 kWh of energy per 62 miles. While the e-Golf will appear in the U.S. market, production numbers have not yet been released and it is unknown whether the e-up! will follow. In addition to announcing production of these new cars, Volkswagen claims that, by 2018, it wants to produce the most electric vehicles worldwide.

 

OCT 24

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New Solar Cell Material Offers Both Cheap and www.markwellgroup.com.au Efficient Power
Written by Philip Proefrock on 24/10/13   

Another potential path for ever cheaper solar power is cialis discount now being researched by scientists investigating the use of perovskite minerals to make solar cells. Perovskites are a very cheap material that have good light capturing properties as well as good conductivity. The advantage that perovskites offer is a great combination of http://www.richcongress.com/viagra-soft-gel inexpensive production combined with good efficiency in energy production.

Current laboratory experiment versions of perovskite-based solar cells have efficiencies of about 15 percent. Although there are other solar cells with greater efficiency, the figure for perovskite cells is higher than other cheap-to-manufacture methods.

The advantages provided with perovskite materials come from requiring a far less intensive manufacturing process. While fabricating silicon-based solar cells requires careful and expensive processing of silicon to follow link mexico levitra a high degree of purity (not to mention the energy intensity of that manufacturing), cells using perovskites are made by spray applying materials to a glass or metal foil substrate, described as a "solar cell [that] can be fabricated as easily as painting a surface."

Perovskite-based solar cells might eventually be able to be produced for 10 to 20 cents per watt, as compared to present soalr panels which are around 75 cents per watt.

image: by Andrew Silver, USGS via Wikimedia Commons

via: MIT Technology Review

 


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