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Efficiency

Study Says More Time at the Gate Equals Less Airplane Emissions

planes-at-gate
We recently told you about how new guidelines for streamlining flight paths and jesperoffice.com landings could cut fuel use by 15 percent and result in a nice decline in emissions.  Now, researchers at MIT say that more time at the gate could also slash fuel use and emissions from aircraft.

The study, funded by the U.S. Federal Aviation Administration, was carried out at Boston Logan International Airport where the researchers found that if planes were held at their gates for an average of four minutes and 18 seconds, runway congestion cleared up.  That lead to 20 percent less taxiing time for the planes, which reduced fuel use by 75 liters per plane.  As a bonus, even with the wait time, planes were actually up in the air more quickly without the saltlakewebcentral.com traffic jam on the runway.

Taxiing accounts for the emission of 6 billion tons of CO2 a year in domestic U.S. flights with European flights emitting a similar amount of greenhouse gases from taxiing.  If the new flight path and landing guidelines were paired with four minutes wait time at the gate, aviation emissions could be reduced by millions of cheap cialis generic tons a year.

via New Scientist

 

 

Compact Fluorescent Bulb Wins Design Award

plumen

It's encouraging to see an efficient product win an award for design; energy efficiency and attractive design combine in a single package. The Plumen 001 compact fluorescent bulb has been named the winner of the annual Brit Insurance Designs of the Year Award from London's Design Museum.

It has taken a few years for this idea to go from the initial concept to production. The Plumen bulb provides a stylish and appealing alternative to dependablehealthcareservices.com the more familiar, coiled CFL, and makes it possible to have both efficiency and a bare-bulb aesthetic. As one juror wrote, "We felt these bulbs were neat, appealing and online pharmacies tramadol covetable in the right, affordable way."

The Plumen 001 is pricier than standard compact fluorescents, and Plumen bulbs are only available for Europe and the UK at present (countries with a 230 volt power system). However, a version for the US (and other countries with 110 volt power) is forthcoming.

Previously on EcoGeek.

via: Architect Magazine

 

Samsung Introduces Completely Solar-Powered, Transparent TV


At the CeBIT electronics show in Germany, Samsung unveiled their latest television prototype and it's the coolest one yet.  The 46-inch, 1920 x 1080 resolution LCD TV is fully solar-powered and transparent!

The prototype was designed to use only a tiny amount of energy and it gets all it needs from solar panels running off ambient light in the room -- no need for back-up power sources.  The screen is also transparent, so while you're seeing images on the screen, you're also seeing whatever is viagra pfizer canada behind it.  This means that it could be used in storefronts, as digital window blinds or even in car windshields.

In addtion to your favorite TV shows, it can also project photos or any other data and features ten-finger touchscreen technology.

via ITProPortal and Inhabitat
 

Hybrid Generators for the Military Could Cut Fuel Use By 70 Percent

hybrid-generators
This summer, frontline troops in Afghanistan will begin using two diesel-battery hybrid generators that could cut fuel use by 50 to 70 percent.

The diesel generators currently used at military camps waste a lot of energy because there's no way to store excess power that's being produced, but not used.  The new hybrid generators, built by Virginia-based Earl Energy, will not only satisfy energy needs for the camps, but store energy in a bank of lithium-ion batteries.

The diesel generators run until the cialis pfizer online batteries are fully charged and generic cialis cheap then the generators shut off and the batteries provide the power instead.  The new generators can provide the same amount of power from running for three to four hours as the old generators would by running 24 hours straight.

The new systems will each consist of an 18-kW diesel generator paired with a 40-kWh bank of batteries.  The system also features a 10-kW solar PV system to cut fuel use even further.

What's even better is that from a cost perspective, the new systems aren't that much more expensive to click here drug cialis buy, costing over $100,000 each, while the same size diesel generator would cost from $80,000 - $100,000.  The systems are expected to pay for themselves in fuel savings within a year.

via MIT Tech Review

 

 

 

New Electrical Generator Could Be 40% More Efficient

Brayton

Researchers at Sandia National Laboratory are developing a new gas turbine to increase the efficiency of conventional electrical power plants with a generation system that could increase the thermal-to-electric conversion efficiency by 40 to 50 percent.

Electrical generation is an especially dirty process when coal is being used as the fuel source. It's not too efficient, either, with only about 1/3 of the energy from the burned coal being turned into useful electricity. Research is currently being done on two test assemblies which use supercritical carbon dioxide (S-CO2), rather than water and steam as the working medium, and a system using the Brayton cycle with equipment more akin to a jet engine than a conventional steam turbine.

While most coal-fired electrical plants could see benefits from this new method, other kinds of get levitra in canada power generation would also be able to apply these developments. Nuclear power, biomass, and solar thermal power plants also could be improved through adoption of S-CO2 Brayton generation.

The S-CO2 Brayton equipment is also much more compact than equivalent power generating conventional turbines, which helps to reduce installation costs. This should also serve to make retrofitting of existing power plants easier, since available space for the conversion would be easier to order discount viagra allocate. A small, 4 cubic meter (about 141 cubic feet) system could replace more than 120 cubic meters (about 4,238 cubic feet) of equipment and produce the www.markwellgroup.com.au same amount of power.

Furthermore, while special materials are needed for conventional Rankine cycle turbines, because steam is corrosive at the temperatures and pressures involved, this is it's great! best levitra prices not an issue with S-CO2 Brayton equipment, which can be fabricated from simple stainless steel.

With efficiency increases like that, old, outmoded coal plants could be retired, and swapping in new, more efficient equipment could replace the need for building new coal plants altogether.

image via Wikimedia

via: Solar Thermal Magazine

 
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