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OCT 19

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Better Compressed Power Storage from SustainX
Written by Philip Proefrock on 19/10/11   

A recent patent issued to compressed air energy storage (CAES) company SustainX could provide a significant improvement in grid storage of energy, especially for wind farms and generic propecia sale solar power arrays.

Compressed air is one of online cialis prescription the preferred methods for storing excess energy from renewable sources during periods of peak production. When there is increased demand, it can then be readily harnessed to provide additional electricity, instead of relying on fossil fuel burning 'peaker plants' or other, less desirable alternatives.

The problem with compressing air comes from thermodynamic effects. "Without heat transfer, a gas will increase in temperature as it is compressed; and as it gets hotter, it tends to resist further compression (i.e., each increment of compression must be performed on a volume of gas that is at higher pressure than if it had not been heated by prior compression)." SustainX has developed technology to provide isothermal compression and expansion which gives their system conversion efficiencies of over 90%. And, of course, better conversion efficiencies mean less energy is wasted.

With this technology, SustainX claims a 7x cost reduction over traditional CAES systems. Additionally, according to the company, "SustainX utilizes above-ground storage in the form of industrial-grade, off-the-shelf gas cylinders, eliminating the siting constraints and permitting concerns associated with classical underground CAES."

via: N A Windpower

Nissan Builds 10-Minute EV Charger
Written by Megan Treacy on 18/10/11   

Nissan has announced that it has built a super-fast EV charger that can take your battery from drained to how much does cialis cost fully charged in a mere ten minutes -- a huge improvement over the typical eight-hour refueling time that most EV chargers require.

This new quick charger, built with help from Japan's Kansai University, was made by swapping out the traditionally-used carbon electrodes for tungsten oxide and vanadium oxide electrodes that proved to be far more efficient.  One major drawback to this swap is that EVs today are made with charging components that work with those carbon electrodes, so EVs themselves would have to be updated to work with this new type of click now cheap quality cialis charger.

Nissan plans to fully commercialize this new charger, but it's likely to take about another decade until they're on the streets or available for your home.  It's a drag to price levitra have to wait that long to see this technology produced, but it's also really exciting to imagine that in ten years you'll be able to recharge your EV in the time it takes to eat a snack.

via Inhabitat


OCT 14

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"The production of biofuel is very inefficient at this moment. Unless s..."

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Disadvantages of Aviation Biofuels
Written by Philip Proefrock on 14/10/11   

In the past couple of years, we've seen many, many tests being carried out by numerous different airlines and agencies to study the possibilities of using biofuel as an entire replacement for or as a blend with conventional jet fuel. But biofuels as a replacement for petroleum-based jet fuel may not be the ideal solution.

Biofuels are better than straight petroleum-based products, but there are drawbacks to biofuels, as well. Dedicating cropland to cialis cost 20mg grow fuel crops can cut down on the available land and farming resources for food production. There are arguments against algae-based fuels, as well. They don't compete with food for farmland, but the industrial infrastructure needed to produce algae-based fuel at scale is a daunting prospect.

Of course, conversion to any new material is a daunting prospect. The development of new technologies will eventually be necessary, one way or another. To continue to research alternatives and to find the visit web site buy cialis us best mix of feedstock for alternative fuels is importatnt not only for aviation, but for all energy technologies.

Virgin Atlantic, which is one of the many airlines to have tested biofuels, is now exploring a jet fuel replacement that, rather than using bio materials as feedstock, is derrived from waste industrial gas from steel production.  But if that relies on petroleum fuels as the original feedstock, then the long term viability of wow)) buying levitra online that process is also questionable.

via: Treehugger and Guardian

San Francisco Making Buildings Bird-Safe
Written by Megan Treacy on 13/10/11   

As much as is made of wind turbines being a threat to birds, they don't even come close to generic viagra from canada online the biggest manmade killer of birds:  buildings.  Highly reflective window glass claims as many as one billion birds a year in North America, while city lights at night can cause migratory birds to become disoriented, often leading to their death.

San Francisco officials are hoping to help protect the 400 different species of birds that inhabit their city by introducing a new law called Standards for Bird-Safe Buildings.

The standards are mainly voluntary, but new buildings, additions and retrofits, buildings near urban bird refuges, as well as structures like freestanding clear glass walls, skywalks, rooftop greenhouses and enclosed balconies do have to comply with some mandatory rules.

To make these buildings and structures bird-safe, owners can place netting in front of windows or place ceramic lines or dots on glass to cut down on their reflectivity, while preserving the ability to see out.  To keep from confusing migrating birds at night, buildings will also have to observe lights-out ordinances during the migratory season.

via NY Times

A Little Brother for the Volt
Written by Philip Proefrock on 13/10/11   

Chevrolet is bringing out a new "city car" model to be available in summer 2012, and along with it, an all-electric version of the same vehicle will be available starting in California in 2013. Both the cialis online us non-electric and the electric versions are called the Chevy Spark.

The Spark is a small car aimed at Millenial generation consumers, particularly those living in dense cities. "The Chevrolet Spark is 14 inches shorter than the recently launched Chevrolet Sonic. It’s three feet longer than the Smart Fortwo and four inches longer than the Fiat 500."

The gas powered version of the Spark will have an 83 horsepower (61kW) 1.2L four-cylinder engine. The company has not yet released specific details about the price, driving range or performance of the Spark EV, nor what markets it will be available in. However, according to the company, A123 Systems will supply the advanced nanophosphate lithium-ion battery packs that will power the Spark EV.

via: Michigan Radio


OCT 10

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Vermont Plans to Get 90% of Energy from Renewable Sources by 2050
Written by Megan Treacy on 10/10/11   

Vermont's Department of Public Service has released a new Comprehensive Energy Plan that raises its renewable energy target to 90% by 2050, a huge leap from the tramadol order online 25% by 2050 target set in 2008. 

The plan calls for a mix of new renewable energy projects, energy conservation, gains in residential and commercial energy efficiency, and developing plug-in vehicle infrastructure.

Vermont has a bit of an advantage going into this goal since it has the lowest energy demand in New England and pfizer viagra 50mg also has no coal-fired power plants.  The Vermont Yankee nuclear plant that supplies one-third of its electricity is closing next year, so the state is aggressively pursuing renewable energy, mainly solar and wind power, to replace it.

via Energy Boom

OCT 07

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"@Bund: Sorry. Nuclear reactors over our heads is not going to "fly". L..."

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Electric Plane Flies 200 Miles in Two Hours, Wins NASA Challenge
Written by Megan Treacy on 07/10/11   

Pipistrel-USA, a team from Pennsylvania has won the NASA CAFE Green Flight Challenge by flying an electric plane 200 miles in less than two hours.

The Google-sponsored contest was created to spur development of electric airplanes and efficient aircraft designs and with a first-place prize of $1.35 million, it could very well succeed at that.

The contest took place at the Sonoma County Airport in California and required entrants to fly 200 miles in two hours while using less than one gallon of fuel per occupant or the electricity equivalent. Pipistrel-USA's plane, the Taurus G4, had two occupants and used less than a two-gallon equivalent of electricity.  Check out the video above of a flight demonstration of the Taurus G4.

Both the winning Pipistrel-USA and the second place team flew electric airplanes. Only three teams out of 14 that registered met the contest's requirements.

via Wall Street Journal



OCT 07

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"Thanks for sharing this great post on the greenest building material. ..."

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USDA Study Says Wood Is the Greenest Building Material
Written by Philip Proefrock on 07/10/11   

Green building advocates and construction product marketers have different views of what the natural viagra scam greenest building material is. Different ways of determining what green means will lead to different results. But according to a recent report from the U.S. Forest Service, wood is the greenest building material.

This analysis seems to levitra sale buy rest largely on the carbon footprint of various construction materials.

"The argument that somehow non-wood construction materials are ultimately better for carbon emissions than wood products is not supported by our research," said David Cleaves, the U.S. Forest Service Climate Change Advisor. "Trees removed in an environmentally responsible way allow forests to continue to sequester carbon through new forest growth. Wood products continue to benefit the environment by storing carbon long after the building has been constructed."

Wood is also unique as a renewable resource that actively sequesters carbon from the atmosphere. As they grow, trees absorb CO2 from the atmosphere and lock it into the structure of the wood. In doing so, wood is a carbon storage material, and that carbon is locked away until the wood decomposes or burns.

The report additionally recommends that USDA further its outreach efforts to educate the construction industry and the general public to be more aware of order usa levitra online the suitability of wood for non-residential construction and to further study of the carbon benefits of the use of wood in construction.

image: CC-SA 2.5 by Andreas Trepte,

via: Architect magazine

Predictive Parking in Pittsburgh
Written by Philip Proefrock on 07/10/11   

Finding a parking space in downtown Pittsburgh is an easier prospect with the use of a new system called ParkPGH. The system, which is connected to 10 lots which together comprise 25 percent of the parking structures in the downtown area, monitors and predictively determines the best parking location for drivers looking for a place to leave their cars.

Unlike other parking monitoring systems which only report on current conditions at local parking lots, ParkPGH uses an algorithm designed by Dr. Robert Hampshire at Carnegie Mellon University that considers historical data as well as current conditions to predict where spaces will be when the driver arrives.

While at this point it may be more a convenience for drivers than a significant tool for cutting emissions and reducing drive time, developing systems like this to help route traffic can lead to more efficient travel, with the correspondingly reduced emissions and time savings.

image: CC 2.0 by Snowmanradio

via: Architect magazine


OCT 06

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"love this. while i'm all about not using cars at all, car sharing prog..."

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Paris Introducing EV-Sharing Program
Written by Megan Treacy on 06/10/11   

Paris has introduced plans for a city-wide EV car-sharing network that will operate much like its successful Velib bike-sharing system.  The car-sharing program will begin on December 5 with 250 EVs available.

The system will allow users to pick up and drop off the cars at different locations as long as they're returned to a designated parking spot.  The chosen vehicles, called Bluecars, will be outfitted with computer systems that let drivers know where those parking spaces are.

The Bluecars are tiny, compact EVs being built by Pininfarina, who also makes Ferrari and Maserati vehicles.  The small EVs will have solid-state lithium metal polymer batteries that Pininfarina claims have a lifespan of 200,000 km and real viagra gel require no maintenance.

via IEEE


OCT 06

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"I do not have all the facts in front of me, but I have seen a couple c..."

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Inflatable Vertical-Axis Wind Turbine
Written by Philip Proefrock on 06/10/11   

Dean Kamen, the inventor who is perhaps best known as the inventor of price of levitra in canada the Segway, has filed a patent for an inflatable vertical-axis wind turbine, which could be rapidly transported to locations where it was needed.

The patent application for this seems to be less about renewable power generation and is focused more on the attached LEDs being used as an animated display system. While it might be usable as a rapidly deployable system for power generation after an emergency, other portable wind-power generators seem more promising to be able to generate enough power to be useful in the aftermath of a disaster. Nonetheless, it is always interesting to see new developments in wind power technology.

hat tip to: Tobias Buckell


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