Emissions Control

Massachusetts-based FloDesign has developed a wind turbine that could generate electricity at half the cost of conventional wind turbines. The company's design, which draws on technology developed for jet engines, circumvents a fundamental limit to conventional wind turbines. Typically, as wind approaches a turbine, almost half of the air is forced around the blades rather than through them and the energy in that deflected wind is lost, but by using a shroud design, the company says it is able to generate as much power as a conventional wind turbine with blades twice as big in diameter. Read More

Our second ingenious example of bringing new approaches to hydro-power generation for the week, SEARASER works on the conventional principle of using water pressure to drive turbines but achieves this in a unique way. The system consists of a tethered wave energy converter which uses the rolling motion of waves to pump water to higher ground on-shore from where it can then be stored and used to create electricity on demand. Read More

GM’s HydroGen4 fuel-cell vehicles will hit the road in Berlin as part of the company's extensive global zero-emission test program. Having already completed over 400,000 miles of testing in the U.S. (where its known as the Chevrolet Equinox Fuel Cell), the tests in Germany will be the first European outing for the hydrogen EV which is capable of 0-62mph in around 12 seconds, has a top speed of 100mph and a range of around 200 miles. Read More

Yesterday we looked at the promising future of liquid crystal based lubricants in dramatically improving engine efficiency, now the other side of the equation - how to improve engine design. A neutron imaging system developed by Nissan and the Japan Atomic Energy Agency (JAEA) that can see through lightweight metals may help uncover some of the answers by providing researchers with unprecedented visualization of oil flow in an engine operating at high speed. Read More

Following on from its breakthrough flight in October last year, Green Flight International has set another green-aviation record, this time flying a jet across the U.S. using environmentally-friendly Biofuel. Piloted by President and CEO Douglas Rodante and Chief Pilot Carol Sugars, BioJet 1 completed the flight from Reno, Nevada to Leesburg, Florida in just over 11 hours at altitudes ranging from 13,000 to 17,000 feet. While 1,776 miles where flown on 100% Biofuel, a 50/50 mix of Biofuel and standard jet fuel was used for the remainder of the 2,486 journey in order to compare performance data and also demonstrate the ability to blend these fuel types. Read More

London's iconic double-decker buses may soon add a green heart to their familiar red exterior. Having already made an impact in North America, buses equipped with BAE Systems’ diesel-electric HybriDrive propulsion system are soon to be trailed on the other side of the Atlantic. The first of 17 evaluation units built by Britain’s Alexander Dennis Limited (ADL) and BAE Systems was delivered this week to bus operator Transport for London and Metrobus. Read More

November 4, 2008 One of the hurdles of cleaning up vehicle emissions is the need for drivers to buy a completely new environmentally friendly vehicle - not exactly a feasible option for most people. Systems like the latest bi-fuel Internal Combustion Engine conversion from Roush Technologies could provide that vital stepping stone between petrol and hydrogen fueled vehicles. To demonstrate the technology, the company has modified the engine of a Ford Transit-based vehicle to operate using compressed hydrogen gas fuel – but it can also operate from its existing petrol fueled system without any adverse effects. Read More

There is no doubt that mankind stands at a pivotal point in our history in relation to our consumption of global resources and the resultant impact on the planet on which we live. By far the biggest concern is our ever-growing appetite for energy to power the lifestyles we have grown not only accustomed to, but also dependent upon. Solar is one answer with great potential, but economics and the amount of power it can produce in comparison to fossil fuel power stations has held it back so far. Now new approaches like Cool Earth’s collectors are becoming advanced enough to effectively tackle these problems with technology that relies on inexpensive and free materials, is scalable, able to compete economically with fossil fuel power plants and is capable of delivering not just megawatts, but gigawatts of clean power. Read More

With the spiraling cost of fuel and the average cost of diesel in 2008 climbing around 39 percent versus last year, it’s no surprise that truck manufacturers are looking to lighten the burden on trucking operators. To this end Navistar, makers of the LoneStar, has expanded its line of diesel electric hybrid trucks with the unveiling of their International DuraStar Hybrid tractor at this week’s Hybrid Truck Users Forum in South Bend, Indiana. Navistar claims that the new diesel electric hybrid Class 7 tractor has the proven capability to provide fuel savings of 20-25 percent on standard in-city pickup and delivery applications. Read More